OC194-1

CONTENTS

1. TECHNICAL CHANGE ··················································································OC194- 22. FEATURES ····································································································OC194- 33. PART NAME AND FUNCTIONS····································································OC194- 44. SPECIFICATIONS ··························································································OC194- 65. DATA ··············································································································OC194- 86. OUTLINES AND DIMENSIONS ····································································OC194-177. REFRIGERANT SYSTEM DIAGRAM····························································OC194-198. WIRING DIAGRAM ························································································OC194-209. OPERATION FLOW-CHART··········································································OC194-22

10. MICROPROCESSOR CONTROL ··································································OC194-2511. TROUBLESHOOTING ····················································································OC194-3612. 4-WAY AIR FLOW SYSTEM ········································································OC194-4313. SYSTEM CONTROL ······················································································OC194-5014. DISASSEMBLY PROCEDURE ······································································OC194-5515. PARTS LIST ··································································································OC194-5716. OPTIONAL PARTS ························································································OC194-63

PL12FK1PL18FK21PL24FK21PL30FK21PL36FK31PL42FK21

OC194-2

1 TECHNICAL CHANGE

Change points

Optional parts Program timer

FK2

Switch for temperature unit

Switch for louvers

—

OFF

Control change of the normal and twin

Change of the unit No.1 and No.2

—

—

PAC–SK65PT

Canceled

Canceled

Addition of "Mode selector"

ON

Addition of "Not yet used"

Addition of "LOSSNAY interlocked or not"

Addition of "Mode selector"

Addition of "CN2L"

PAC–SC32PTA

FK21

SW17

SW18

SW1

SW5

SW6

No.9

No.0

No.10

No.3

No.4

Dip switch

Dip switch

Appearances

Remote

controller

Indoor controller

4-3/4 o 4-3/4 o 5/8 5-1/8 o 4-3/4 o 3/4

Connector for LOSSNAY interlocked

Differences with OC001 which is a basic service manual.

OC194-3

FEATURES2

1. SPACE-SAVING CENTRALLY LOCATED CEILING RECESSED INSTALLATION

2. 4-WAY AIR FLOW SYSTEMThis series allows you to select from 2, 3, and 4 way air flow directions according to your requirement. As a result, you getsuperb flexibility in choosing a configuration that gives you maximum cooling efficiency in a neat and unobstructive installa-tion.

3. STABLE COOLING EVEN AT OUTDOOR TEMPERATURES AS LOW AS 0 --F MAKESYEARROUND AIR-CONDITIONING POSSIBLE. WIND BAFFLE REQUIRED.The microprocessor automatically adjusts fan speed in accordance with outdoor temperature to maintain the coolant at aneven condensing temperature. The result is smooth, efficient cooling even when temperatures outdoors drop as low as 0-F.This makes the unit ideal for a wide range of specialized cooling needs, such as rooms with many office machines or com-puters and areas subject to strong sunlight.

4. ADVANCED MICROPROCESSOR CONTROL(1) Easy to use Microprocessor (remote controller)

1) Ultra-Thin Remote ControllerThe streamlined, wide controller is designed to blend with any kind of interior and the adoption of a sophisticated micro-processor allows you to carry out a wide range of operations easily.

2) Attractive Liquid Crystal Display (LCD)Units operation mode, set temperature, room temperature, timer setting, fan speed, and air flow direction are displayedon the remote controller with the easily understood visual Liquid Crystal Display (LCD).

3) Convenient 24-Hour ON-OFF TimerThe timer allows Mr.SLIM to be switched on or off automatically at the time is shown on the LCD.

4) Self-Diagnostic Feature Indicates Faults InstantlyIn the rare case when a problem occurs, the unit stops operating and the set temperature indicator changes to the self-diagnostic indicator, indicating the location of the fault.If the check switch is pressed twice, the unit stops operating and the check mode is initiated. The cause of the mostrecent problem stored in the memory is displayed on the LCD. This is extremely useful for maintenance purposes.

5) Useful Memory Feature for Storing InstructionsThe previous set value is memorized so that constant temperature control can be obtained. This is convenient when,for example, a power failure occurs.

(2) Non-polar Two-Wire Remote Controller CablesThe non-polar, two-wire type remote controller cable is slim, installation is simple and trouble-free. Remote controller wirecan be extended up to 550 yards.

Models Cooling capacity SEER

PL12FK1 12,300 Btu/h 10.4PL18FK21 18,400 Btu/h 10.2PL24FK21 23,600 Btu/h 10.0PL30FK21 31,000 Btu/h 10.4PL36FK31 36,100 Btu/h 10.0PL42FK21 42,500 Btu/h 10.0

Indoor Unit

Remote controller

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOP

SWING

FAN SPEED

AUTO RETURN

FAN

OC194-4

3 PART NAMES AND FUNCTIONS

Remote controller operation buttons

TIMER OFF TIMER

CHECK SET TEMP.

DRY COOL

FANCLOCK AUTO AUTO

START STOP

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER

CHECK

TEST RUN

AIR SWEEP

SET TEMP. TIMER SET

F

FAN SPEED

SWING

REMOTE CONTROLLER PAR-JC240KUS

AUTO RETURN

FILTER buttonThis resets the filter service indica-tion display.

TIMER ON/OFF button

This switches between continuousoperation and the timer operation.

SET TEMPERATUREbuttonThis sets the room temperature.The temperature setting can be per-formed in 2-F units.

Setting range :Cooling 65-F to 87-F

CLOCK/TIMER button

This sets or switches the currenttime,start time and stop time.

FAN SPEED button

This sets the fan speed.

AIR DISCHARGE buttonThis adjusts the vertical angle of the ventilation.

ON/OFF button

This switches between the opera-tion and stop modes each time it ispress. The lamp on this buttonlights during operation.

OPERATION MODEbuttonPress this button to switch the cool-ing, electronic dry (Dehumidify),fanmodes.

Remote controller

Once the controls are set, the same operation mode can be repeated by simply pressing theON / OFF button.

CHECK-TEST RUN button

Only press this button to perform aninspection check or test operation.Do not use it for normal operation.

AIR SWEEP buttonThis switches the horizontal fan motion(Swing louver) ON and OFF.(This button does not operate in thismodels.)

OC194-5

TIMER OFF TIMER

CHECK SET TEMP.

DRY COOL

FANCLOCK AUTO AUTO

START STOP

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER

CHECK

TEST RUN

AIR SWEEP

SET TEMP. TIMER SET

F

FAN SPEED

SWING

REMOTE CONTROLLER PAR-JC240KUS

AUTO RETURN

Operation lamp

This lamp lights during operation,goes off when the unit stops andflashes when a malfunction occurs.

CENTRALLYCONTROLLED display

This indicates when the unit is con-trolled by optional features such ascentral control type remote controller.

TIMER display

This indicates when the continuousoperation and time operation modesare set.It also display the time for the timeroperation at the same time as whenit is set.

OPERATION MODE display

This indicates the operation mode.

CHECK display

This indicates when a malfunctionhas occurred in the unit which shouldbe checked.

display

This lamp lights when electricity issupplied to the unit.

display

This displays the selected settingtemperature.

F

CLOCK display

The current time , start time and stoptime can be displayed in ten secondintervals by pressing the time switchbutton. The start time or stop time isalways displayed during the timeroperation.

displayThe temperature of the return air isdisplayed during operation. The dis-play range is 47°F to 97°F. The dis-play flashes 47°F when the actualtemperature is less than 47°F andflashes 97°F when the actual tem-perature is greater than 97°F.

F

In this display example on the bottom left, a condi-tion where all display lamps light is shown forexplanation purposes although this differs fromactual operation.

display

This display lights in the check modeor when a test operation is per-formed.

CHECK MODE

TEST RUN

display

This lamp lights when the filter needsto be cleaned.

FAN SPEED display

The selected fan speed is displayed.

Caution● Only the display lights when the unit is stopped and power supplied to the unit.● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a malfunction.● When the central control remote control unit, which is sold separately, is used the ON-OFF button,OPERATION MODE button and SET

TEMP. button do not operate.● “NOT AVAILABLE” is displayed when the AIR SWEEP button are pressed.

(AIR SWEEP function is not provided for PL series.)

FILTER

Remote controller display

AIR DISCHARGE display

This displays the air direction.

OC194-6

4 SPECIFICATIONS

Capacity

Power Consumption

EER

SEER

INDOOR UNIT MODELS

External finish

Power supply

Max.fuse size (time delay) Min.ampacity

Fan motor

Airflow Hi-Lo

Moisture removal Sound level Hi-Lo

Cond. drain pipe O.D.

Dimensions

Weight External finish

Dimensions

Weight OUTDOOR UNIT MODELS

External finish

Sound level Power supply

Max. fuse size (time delay) Min. ampacity

Fan motor

Compressor

Crankcase heater Refrigerant control

Dimensions

Weight REMOTE CONTROLLER

Control voltage (by bulit-in. transformer) REFRIGERANT PIPING

Pipe size

Connection method

Between the indoor & outdoor units

*1

*1

*1

Dry

Wet

W

D

H

W

D

H

Model (type)

W

D

H

Liquid

Gas

Indoors

Outdoors

Height difference

Piping length

Btu/h

kW

V,phase,Hz

A

A

F.L.A. CFM

CFM

Pints/h

dB

in. in. in. in.

in. in. in.

dB(A) V, phase, Hz

A

A

F.L.A.

R.L.A. L.R.A. A(W)

in. in. in. lb

in. in.

ft ft

Model

PL18FK21

18,400

1.88

9.8

10.2

PL18FK21

Galvanized sheets with gray heat insulation

115 , 1 , 60

15

2.0

0.85

680-460

650-440

5.3

45-38

1-1/4

32-1/4

32-1/4

10-1/8

64

Munsell 0.70Y 8.59/0.97

36-5/8

36-5/8

2-3/8

22

PU18EK1

Munsell 5Y 7/1

53

208-230, 1, 60

20

16

0.75

RH247NAB

12

37

0.11/0.12 (23/28) Capillary tube

34-1/4

11-5/8

33-1/2

154

With indoor unit indoor unit - remote controller : DC12V, Indoor unit - outdoor unit : DC12V

Not supplied (optional parts) 3/8

5/8

Flared

Flared

130

130

PL24FK21

23,600

2.48

9.5

10.0

PL24FK21

�

15

2.0

1.1

750-550

660-480

6.8

47-39

1-1/4

64

PU24EK1

55

20

16

0.65+0.65

NH33NBD

11.5

54

0.16/0.17 (33/39)

49-9/16

207

3/8

5/8

164

164

Item

NOTES : *1.Rating conditions —indoor : 80°FDB,67°FWB outdoor : 95°FDB,75°FWB. Operating range

Indoor intake air temperature

95°FDB,71°FWB

67°FDB,57°FWB

Outdoor intake air temperature

115°FDB

0°FDB*

Cooling

Maximum

Minimum

* In case of the wind baffle is installed. (In case of the wind baffle is not installed, the minimum temperature will be 23°FDB.)

PL12FK1

112,300

1.23

10.0

10.4

PL12FK1

15

2.0

0.75

570-540

420-400

3.8

43-35

1-1/4

60

PU12EK

50

15

11

0.65

RH167NAB

8.9

29

0.11/0.12 (23/28)

25-5/8

105

3/8

5/8

130

130

IND

OO

R

GR

ILLE

MODELS : PL12FK 1, PL18/24FK21

OC194-7

Capacity

Power Consumption

EER

SEER

INDOOR UNIT MODELS

External finish

Power supply

Max.fuse size (time delay) Min.ampacity

Fan motor

Airflow Hi-Lo

Moisture removal Sound level Hi-Lo

Cond. drain pipe O.D.

Dimensions

Weight External finish

Dimensions

Weight OUTDOOR UNIT MODELS

External finish

Sound level Power supply

Max. fuse size (time delay) Min. ampacity

Fan motor

Compressor

Crankcase heater Refrigerant control

Dimensions

Weight REMOTE CONTROLLER

Control voltage (by bulit-in. transformer) REFRIGERANT PIPING

Pipe size

Connection method

Between the indoor & outdoor units

*1

*1

*1

Dry

Wet

W

D

H

W

D

H

Model (type)

W

D

H

Liquid

Gas

Indoors

Outdoors

Height difference

Piping length

Btu/h

kW

V,phase,Hz

A

A

F.L.A. CFM

CFM

Pints/h

dB

in. in. in. in.

in. in. in.

dB(A) V, phase, Hz

A

A

F.L.A.

R.L.A. L.R.A. A(W)

in. in. in. lb

in. in.

ft ft

Model

PL36FK31

36,100

3.76

9.6

10.0

PL36FK31

Galvanized sheets with gray heat insulation

115 , 1 , 60

15

2.0

1.0+1.0

1,170-850

1,090-790

10.9

49-41

1-1/4

52-3/4

32-1/4

10-1/8

99

Munsell 0.70Y 8.59/0.97

57-1/8

36-5/8

2-3/8

35

PU36EK1

Munsell 5Y 7/1

55

208-230, 1, 60

30

22

0.75+0.75

NH47NAD

17.5

87

0.16/0.17 (33/39) Capillary tube

38-3/16

13-9/16

49-9/19

154

With indoor unit indoor unit - remote controller : DC12V, Indoor unit - outdoor unit : DC12V

Not supplied (optional parts) 1/2

3/4

Flared

Flared

164

164

PL42FK21

42,500

4.40

9.7

10.0

PL42FK21

�

15

3.0

1.2+1.2

1,270-920

1,200-870

12.6

49-42

1-1/4

101

PU42EK2

56

40

27

0.8+0.8

NH569NXA

20

105

0.16/0.17 (33/39)

38-3/16

13-9/16

260

1/2

3/4

164

164

Item

NOTES : *1.Rating conditions —indoor : 80°FDB,67°FWB outdoor : 95°FDB,75°FWB. Operating range

Indoor intake air temperature

95°FDB,71°FWB

67°FDB,57°FWB

Outdoor intake air temperature

115°FDB

0°FDB*

Cooling

Maximum

Minimum

* In case of the wind baffle is installed. (In case of the wind baffle is not installed, the minimum temperature will be 23°FDB.)

PL30FK21

31,000

3.10

10.0

10.4

PL30FK21

15

2.0

1.0+1.0

1,170-850

1,090-790

9.6

49-41

1-1/4

99

PU30EK1

55

30

20

0.65-0.65

NH41NAD

14.0

73

0.16/0.17 (33/39)

34-1/4

11-5/8

208

1/2

3/4

164

164

IND

OO

R

GR

ILLE

MODELS : PL30FK2 1, PL36FK31, PL42FK21

OC194-8

5 DATA

MODELS : PL12FK 1, PL18/24/30FK21, PL36FK31, PL42FK21

1. PERFORMANCE DATA1) COOLING CAPACITY

Models

Indoor air Outdoor intake air DB temperature(°F)

PL12FK1

71

67

63

71

67

63

71

67

63

71

67

63

71

67

63

71

67

63

TC

14.3

13.2

12.1

21.2

19.8

18.5

27.4

25.6

23.8

35..8

33.2

30.9

41.7

38.9

36.4

49.6

46.1

42.8

SHC

7.1

8.4

9.3

14.6

16.0

17.2

17.8

19.5

20.5

19.4

22.6

25.1

27.1

29.6

32.0

32.3

35.0

37.2

TPC

1.06

1.03

0.99

1.64

1.60

1.56

2.15

2.10

2.05

2.65

2.59

2.53

3.22

3.15

3.08

3.95

3.88

3.80

TC

13.8

12.8

11.8

20.6

19.1

17.9

26.5

24.7

22.9

34.5

31.9

29.8

40.3

37.5

35.1

47.8

44.3

41.1

SHC

6.9

8.2

9.1

13.6

15.1

16.1

16.7

18.0

19.0

19.1

22.1

24.6

25.4

28.1

30.2

30.0

32.8

34.9

TPC

1.16

1.12

1.08

1.77

1.73

1.70

2.36

2.30

2.24

2.88

2.81

2.75

3.52

3.44

3.36

4.25

4.10

4.00

TC

13.2

12.3

11.4

19.6

18.4

17.1

25.3

23.6

22.1

33.5

31.0

29.0

38.6

36.1

33.5

45.8

42.5

39.3

SHC

6.8

8.0

9.0

12.5

14.0

15.0

15.2

16.8

18.1

18.8

21.6

23.9

23.5

26.4

28.1

28.0

30.6

32.6

TPC

1.27

1.23

1.18

1.93

1.88

1.83

2.57

2.48

2.43

3.17

3.10

3.02

3.85

3.76

3.67

4.60

4.40

4.28

TC

12.6

11.8

11.1

18.7

17.5

16.3

24.0

22.6

21.0

31.4

28.8

26.9

36.8

34.5

31.9

43.5

40.2

37.1

SHC

6.6

7.8

8.8

11.6

12.8

13.9

13.8

15.4

16.6

18.5

20.9

23.1

22.1

24.5

26.2

25.7

28.2

29.7

TPC

1.38

1.34

1.29

2.10

2.03

1.98

2.77

2.69

2.62

3.44

3.35

3.28

4.22

4.10

4.00

4.85

4.65

4.45

TC

11.9

11.2

10.4

17.9

16.5

15.3

22.8

21.4

20.0

29.6

27.4

25.6

34.9

32.5

30.2

41.2

37.7

34.8

SHC

6.4

7.6

8.4

10.6

11.7

12.7

12.5

13.9

15.2

18.0

20.4

22.5

20.2

22.4

24.2

23.1

25.3

27.1

TPC

1.50

1.46

1.40

2.23

2.17

2.12

3.00

2.90

2.81

3.76

3.63

3.55

4.56

4.42

4.30

5.20

4.95

4.75

IWB (°F)

75 85 95 105 115

420

0.27

Airflow (CFM)

B.F

PL18FK21 650

0.17

PL24FK21 660

0.13

PL36FK31 1090

0.15

PL42FK21 1200

0.14

PL30FK21 1090

0.15

Notes 1. B.F. : Bypass Factor, IWB : Intake air wet-bulb temperature

TC : Total Capacity (x103 Btu/h), SHC : Sensible Heat Capacity (x103 Btu/h) TPC : Total Power Consumption (kW) 2. SHC is based on 80°F of indoor intake air DB temperature.

MODEL

Refrigerant piping length (one way)

1.0

1.0

1.0

1.0

1.0

25ft (std)

0.992

0.981

0.981

0.981

0.975

40ft

0.983

0.968

0.968

0.968

0.955

55ft

0.978

0.952

0.952

0.952

0.935

70ft

0.966

0.940

0.940

0.940

0.918

85ft

0.959

0.925

0.925

0.925

0.900

100ft

0.950

0.913

0.913

0.913

0.884

115ft

0.945

0.900

0.900

0.900

0.869

130ft

0.886

0.886

0.886

0.855

150ft

0.874

0.874

0.874

0.840

164ft

PL12FK1�

PL18FK21�

PL24FK21

PL30FK21

PL36FK31

PL42FK21

2) COOLING CAPACITY CORRECTIONS

OC194-9

2. PERFORMANCE CURVENOTES : A point on the curve shows the reference point.

PL12FK1 COOLING CAPACITY PL18FK2 1 COOLING CAPACITY

Tota

l pow

er c

onsu

mpt

ion

(kW

)To

tal c

apac

ity (

x10

3 B

tu/h

)

Outdoor intake air DB temperature ( F)

24

21

12

18

15

2.5

2.0

1.5

1.0

636771

636771

SHF=0.76

0 32 35 45 55 65(67) 75 85 95 105 115

Indoor intake air WB temperature ( F)

Indoor intake air WB temperature ( F)

3.0

Tota

l pow

er c

onsu

mpt

ion

(kW

)To

tal c

apac

ity (

x10

3 B

tu/h

)

Outdoor intake air DB temperature ( F)

18

18

6

1.4

1.2

1.0

0.8

636771

636771

SHF=0.77

0 32 35 45 55 65(67) 75 85 95 105 115

Indoor intake air WB temperature ( F)

Indoor intake air WB temperature ( F)

1.6

OC194-10

NOTES : A point on the curve shows the reference point.

PL24FK21 COOLING CAPACITY PL30FK2 1 COOLING CAPACITY

Tota

l pow

er c

onsu

mpt

ion

(kW

)To

tal c

apac

ity (

x10

3 B

tu/h

)

Outdoor intake air DB temperature ( F)

36

30

42

24

4.0

3.5

3.0

2.5

636771

636771

SHF=0.76

23 32 35 45 55 65(67) 75 85 95 105 115

Indoor intake air WB temperature ( F)

Indoor intake air WB temperature ( F)

Tota

l pow

er c

onsu

mpt

ion

(kW

)To

tal c

apac

ity (

x10

3 B

tu/h

)

Outdoor intake air DB temperature ( F)

30

24

36

18

3.0

2.5

2.0

1.5

636771

636771

SHF=0.71

23 32 35 45 55 65(67) 75 85 95 105 115

Indoor intake air WB temperature ( F)

Indoor intake air WB temperature ( F)

3.5

PL36FK31 COOLING CAPACITY PL42FK2 1 COOLING CAPACITY

Tota

l pow

er c

onsu

mpt

ion

(kW

)To

tal c

apac

ity (

x10

3 B

tu/h

)

Outdoor intake air DB temperature ( F)

48

42

54

36

2.0

1.5

636771

63

67

71

SHF=0.72

23 32 35 45 55 65(67) 75 85 95 105 115

Indoor intake air WB temperature ( F)

Indoor intake air WB temperature ( F)

Tota

l pow

er c

onsu

mpt

ion

(kW

)To

tal c

apac

ity (

x10

3 B

tu/h

)

Outdoor intake air DB temperature ( F)

42

36

48

30

4.0

3.5

3.0

2.5

636771

636771

SHF=0.73

23 32 35 45 55 65(67) 75 85 95 105 115

Indoor intake air WB temperature ( F)

Indoor intake air WB temperature ( F)

4.5

OC194-11

<PL18FK21>

COOLING MODE

3. CONDENSING PRESSURE AND SUCTION PRESSUREData is based on the condition of indoor humidity 50%.Air flow should be set at HI.A point on the curve shows the reference point.

<PL12FK1>

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

180

170

160

150

(psi.G)

Con

dens

ing

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

Indoor DB temperature( F)

86 80 75 70

100

90

80

70

60

50

40

30

20

(psi.G)

Suc

tion

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

86

80�

75�

70

Indoor DB temperature( F)

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

180

170

160

150

(psi.G)

Con

dens

ing

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

Indoor DB temperature( F)

86

80

75

70100

90

80

70

60

50

40

30

20

(psi.G)

Suc

tion

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

86

80�

75�

70

Indoor DB temperature( F)

COOLING MODE

OC194-12

Data is based on the condition of indoor humidity 50%.Air flow should be set at HI.A point on the curve shows the reference point.

<PL24FK21>

<PL30FK21>

COOLING MODE

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

180

170

160

150

(psi.G)

Con

dens

ing

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

Indoor DB temperature( F)

86

80

75

70

100

90

80

70

60

50

40

30

20

(psi.G)

Suc

tion

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

86

80�

75�

70

Indoor DB temperature( F)

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

180

170

160

150

(psi.G)

Con

dens

ing

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

Indoor DB temperature( F)

86 80 75 70

100

90

80

70

60

50

40

30

20

(psi.G)

Suc

tion

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

86

80�

75�

70

Indoor DB temperature( F)

COOLING MODE

OC194-13

Data is based on the condition of indoor humidity 50%.Air flow should be set at HI.A point on the curve shows the reference point.

<PL36FK31>

<PL42FK21>

COOLING MODE

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

180

170

160

150

(psi.G)

Con

dens

ing

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

Indoor DB temperature( F)

86 80 75 70

100

90

80

70

60

50

40

30

20

(psi.G)

Suc

tion

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

86

80�

75�

70

Indoor DB temperature( F)

350

340

330

320

310

300

290

280

270

260

250

240

230

220

210

200

190

180

170

160

150

(psi.G)

Con

dens

ing

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

Indoor DB temperature( F)

86 80 75 70

100

90

80

70

60

50

40

30

20

(psi.G)

Suc

tion

pres

sure

30 40 50 60 70 80 90 100 110Outdoor ambient temperature DB( F)

86

80�

75�

70

Indoor DB temperature( F)

COOLING MODE

OC194-14

4. STANDARD OPERATION DATA

750 750 750 750 760 760 840 840

Capacity

SHF

Input

INDOOR UNIT MODEL

Power supply (V, phase, Hz)

Input

Fan current

OUTDOOR UNIT MODEL

Power supply (V, phase, Hz)

Input

Comp. current

Fan current

Condensing pressure

Suction pressure

Discharge temp.

Condensing temp.

Suction temp.

Ref. pipe length

Refrigerant charge

Intake air temperature

Discharge air temperature

Fan speed (High)

Airflow (High)

Intake air temperature

Fan speed upper / lower

Airflow

Unit

Btu / t

—

kW

kW

A

kW

A

A

psi•G

psi•G

°F

°F

°F

ft

—

°F

°F

°F

°F

rpm

CFM

°F

°F

rpm

CFM

PL12FK1

Cooling

12,300

0.77

1.23

PL12FK1

115, 1, 60

0.10

0.75

PU12EK

208/230, 1, 60

1.13

8.9

0.75

246

82

154

116

50

25

4 lbs 14oz

80

67

64

60

590

420

95

—

790

1,590

PL18FK21

Cooling

18,400

0.76

1.88

PL18FK21

115, 1, 60

0.10

0.85

PU18EK1

208/230, 1, 60

1.78

12.0

0.75

252

79

161

117

51

25

5 lbs 8 oz

80

67

60

58

680

650

95

—

790

1,590

PL24FK21

Cooling

23,600

0.71

2.48

PL24FK21

115, 1, 60

0.12

1.06

PU24EK1

208/230, 1, 60

2.36

11.5

0.65+0.65

236

74

162

113

45

25

9 lbs 15 oz

80

67

57

56

710�

660

95

—

3,170

PL30FK21

Cooling

31,000

0.76

3.1

PL30FK21

115, 1, 60

0.1+0.1

0.9+0.9

PU30EK1

208/230, 1, 60

2.90

14.0

0.65+0.65

237

76

165

113

47

25

10 lbs 2 oz

80

67

59

58

660

1,090

95

—

3,170

PL36FK31

Cooling

36,100

0.73

3.76

PL36FK31

115, 1, 60

0.1+0.1

0.9+0.9

PU36EK1

208/230, 1, 60

3.56

15.9

0.75+0.75

249

75

164

115

46

25

10 lbs 9 oz

80

67

59

57

660

1,090

95

—

3,350

DB

WB

DB

WB

DB

WB

Item

Model

Ele

ctric

al c

ircui

tT

otal

Ref

riger

ant c

ircui

tIn

door

sid

eO

utdo

or s

ide

PL42FK21

Cooling

42,500

0.72

4.40

PL42FK21

115, 1, 60

0.13+0.13

1.15+1.15

PU42EK21

208/230, 1, 60

4.14

20.4

0.8+0.8

236

70

166

113

44

25

12 lbs 9 oz

80

67

58

56

710

1200

95

—

3,530

5. OPERATING RANGE1) POWER SUPPLY

Indoor unit

Outdoor unit

Rating

115V 1 phase 60Hz

208/230V 1 phase 60Hz

Allowable voltage

Min. 103V — Max. 127V

Min. 198V — Max. 253V

2) OPERATION

Function

Cooling

DB (°F)

80

95

67

80

Condition

Standard temperature

Maximum temperature

Minimum temperature

Maximum humidity

IndoorIntake air temperature Outdoor

WB (°F)

67

71

57

75

DB (°F)

95

115

0

80

WB (°F)

75

75

—

75

OC194-15

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B r

e 0.

002

MIC

RO

BA

R

BAND CENTER FREQUENCIES, Hz

PL12FK1HiLo

43SPL(dB)

35

LINENOTCH

7. NOISE CRITERION CURVES

Airflow

Air speed

Coverage range

(CFM)

(ft / sec.)

(ft)

Standard

height

PL12FK1

570

9.5

18

PL18FK21

680

11.3

21

PL24FK21

750

12.5

23

PL30FK21

1,170

10.5

27

PL36FK31

1,170

10.5

27

PL42FK21

1,270

11.4

29

•The air coverage range is the value up to the position where the air speed is 0.8ft/sec. when air is blown out horizontally from the unit at the High fan setting.The coverage range should be used only as a general guideline since it varies according to the size of the room and furniture installed inside the room.

6.OUTLET AIR SPEED AND COVERAGE RANGE

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B r

e 0.

002

MIC

RO

BA

R

BAND CENTER FREQUENCIES, Hz

PL18FK21HiLo

45SPL(dB)

38

LINENOTCH

OC194-16

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B r

e 0.

002

MIC

RO

BA

R

BAND CENTER FREQUENCIES, Hz

PL24FK21Hi

NOTCH

Lo47

SPL(dB)

39

LINE

8. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B r

e 0.

002

MIC

RO

BA

R

BAND CENTER FREQUENCIES, Hz

PL42FK21Hi

NOTCH

Lo49

SPL(dB)

42

LINE

90

80

70

60

50

40

30

20

1063 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OC

TAV

E B

AN

D S

OU

ND

PR

ES

SU

RE

LE

VE

L, d

B r

e 0.

002

MIC

RO

BA

R

BAND CENTER FREQUENCIES, Hz

PL30FK21

PL36FK31Hi

NOTCH

Lo49

SPL(dB)

41

LINE

UNIT

5ft

MICROPHONE

CEILING

Ambient temperature 80˚F

Test conditions are based on JIS Z8731

OC194-17

OUTLINES AND DIMENSIONS6

Unit : inch1. INDOOR UNIT PL12FK1/ 18/24FK21

OC194-18

Unit : inchPL30FK21/ 36FK31/ 42FK21

OC194-19

Unit : inch2.Remote controller

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOP

SWING

FAN SPEED

5-1/8

4-3/

4

3/4

3/32 23/32

AUTO

RETURN

FAN

Indoor coil thermistor RT2

Distributor

Refrigerant pipe (option) {3/8" (with heat insulator)

Refrigerant pipe (option) {5/8" (with heat insulator)

Strainer

Flared connection

Flared connection

Indoor coil thermistor RT2

Distributor

Refrigerant pipe (option) {1/2" (with heat insulator)

Refrigerant pipe (option) {3/4" (with heat insulator)

Strainer

Flared connection

Flared connection

PL12FK1

PL18/24FK21

7 REFRIGERANT SYSTEM DIAGRAM

PL30FK21

PL36FK31

PL42FK21

Unit : inch

OC194-20

WIRING DIAGRAM8

MODELS PL12FK 1 PL18FK21 PL24FK21 WIRING DIAGRAMSYMBOL

C1

CN1<R.B>

CN2<R.B>

CN51<I.B>

CN2L<I.B>

DP

DS

F1<I.B>

F2

H2

I.B

LS

MF1

MV

R.B

NAME

Fan motor capacitor Connector <program timer>

Connector <remote switch>

Connector <centrally control>

Connector <lossnay>

Drain water lift-up mechanism

Drain sensor Fuse <6A>

Fuse <0.5A>

Dew prevention heater <grille>

Indoor controller board

Limit switch <vane motor>

Fan motor <with inner thermostat>

Vane motor <with limit thermostat>

Remote controller board

SYMBOL

SW1<I.B>

SW2<I.B>

SW3<I.B>

SW5<I.B>

SW6<I.B>

SW17<R.B>

SW18<R.B>

T

TB2,12

TB4

TB5,6

TH1

TH2

NAME

Switch <mode selector>

Switch <address selector>

Switch <emergency operation>

Switch <model selector>

Switch <model selector>

Switch <address selector>

Switch <function selector>

Transformer Terminal block <power>

Terminal block <indoor/outdoor connecting line>

Terminal block <remote controller transmission line>

Room temperature thermistor <32°F/15k", 77°F/5.4k">

Pipe temperature thermistor <32°F/15k", 77°F/5.4k">

SYMBOL

X1<I.B>

X3<I.B>

X5<I.B>

X6<I.B>

ZNR

NAME

Auxiliary relay <drain water lift-up mechanism/dew prevention heater >

Auxiliary relay <vane motor>

Auxiliary relay <fan motor>

Auxiliary relay <fan motor>

Varistor

NOTES: 1.Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing. 2.Indoor and outdoor connecting wires are made with polarities,make wiring matching terminals. 3.Symbols used in wiring diagram above are, :Terminal block, , :connector, :PC board insertion tab. 4.Emergency operation If a trouble occurs with either the remote controller or the indoor microcomputer and no other trouble exists,emergency operation for cooling can be performed by changing the setting of dip switch (SW3(I.B)) on the indoor controller board (emergency dry operation is not possible).

OC194-21

MODELS PL30FK2 1 PL36FK31 PL42FK21 WIRING DIAGRAM

NOTES: 1.Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing. 2.Indoor and outdoor connecting wires are made with polarities,make wiring matching terminals. 3.Symbols used in wiring diagram above are, :Terminal block, , :connector, :PC board insertion tab. 4.Emergency operation If a trouble occurs with either the remote controller or the indoor microcomputer and no other trouble exists,emergency operation for cooling can be � performed by changing the setting of dip switch (SW3(I.B)) on the indoor controller board (emergency dry operation is not possible).

SYMBOL

C1,2

CN1<R.B>

CN2<R.B>

CN51<I.B>

CN2L<I.B>

DP

DS

F1<I.B>

F2

H2

I.B

LS

MF1,2

MV

R.B

NAME

Fan motor capacitor Connector <program timer>

Connector <remote switch>

Connector <centrally control>

Connector <lossnay>

Drain water lift-up mechanism

Drain sensor Fuse <6A>

Fuse <0.8A>

Dew prevention heater <grille>

Indoor controller board

Limit switch <vane motor>

Fan motor <with inner thermostat>

Vane motor <with limit thermostat>

Remote controller board

SYMBOL

SW1<I.B>

SW2<I.B>

SW3<I.B>

SW5<I.B>

SW6<I.B>

SW17<R.B>

SW18<R.B>

T

TB2,12

TB4

TB5,6

TH1

TH2

NAME

Switch <mode selector>

Switch <address selector>

Switch <emergency operation>

Switch <model selector>

Switch <model selector>

Switch <address selector>

Switch <function selector>

Transformer Terminal block <power>

Terminal block <indoor/outdoor connecting line>

Terminal block <remote controller transmission line>

Room temperature thermistor <32°F/15k", 77°F/5.4k">

Pipe temperature thermistor <32°F/15k", 77°F/5.4k">

SYMBOL

X1<I.B>

X3<I.B>

X5<I.B>

X6<I.B>

ZNR

NAME

Auxiliary relay <drain water lift-up mechanism/dew prevention heater >

Auxiliary relay <vane motor>

Auxiliary relay <fan motor>

Auxiliary relay <fan motor>

Varistor

OC194-22

9 OPERATION FLOW-CHART

START

Power circuit breaker

Check SW

ON twice

Operation SW

ON

“OFF” timer

“ON” timer

STOP

Set time

complete

Set time

complete

1

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

w 1

w 2

w 3

w 4

w 5

PROTECTION DEVICE

SELF HOLD RELEASE

Remote controller indicator lamp OFF

Trouble STOP

Remote controller operation display

Operating mode

(COOL)

Operating mode

(DRY)

COOL operation

DRY operation

FAN operation

Trouble

PROTECTION DEVICE

SELF HOLD

Remote controller trouble display

Indoor side

Outdoor side

Fan STOP

Compressor OFF

Fan STOP

MAIN OPERATION

w1 In addition, the centralized control and remote control can be operated.w2 The modes which indicate the sources of trouble are listed below.

● EO-Signal transmitting/receiving error● P1-Room temperature thermistor malfunction● P2-Indoor coil thermistor malfunction● P4-Drain sensor malfunction● P5-Drain overflow● P6-Coil frost/overheat protection● P7-System error● P8-Outdoor unit trouble

w3 The CHECK switch will show if an error has occurred in the past.w4 The 3-minute time-delay functions after compressor stops.w5 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)

OC194-23

COOL operation

Initial COOLING

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YESNO

YES

YES

YES

YES

YES

YES

YES

YESYES

YES

YES

NO

NO

NO

NO

YES

NO

NO NO

NO

NO

NO

NO

NO

NO

w 8

w 9

Vane initial setting

Vane

55 deg downward angle

70 deg downward angle

Fan speed

LOW

Downward discharge

1 hour

Vane setting notch Vane horizontal airflow

Compressor thermostat

ON

Allowance

cancel

3-minute

time delay

6-minute

time delay

3-minute

compressoroperation

Coil frost protection

Cooling area

10-minute

compressor operation

Allowance cancel

Coil frost prevention

16-minute

compressoroperation

Indoor pipe

temperature is

34°F or lower

Compressor ON

1

w 10

w 11

Coil frost prevention

Compressor OFF

Indoor coil temperature is

50°F or higher

Defrosting protection

detection temperature

30°F or lower

YES

NO

6-minute

time delay3-minute

time delay

Coil frost prevention release

Allowance

period

6 minute

time delay

Allowance set

1 min continue

Coil frost protection

FAN speed

LOW

FAN speed

LOW 5 min

elapse

Outdoor unit trouble

COOLING OPERATION

w8 When operation stops or changes to cooling or dry mode, the auto vane turns to a horizontal angle. If operation changesduring auto vane SWING, the auto vane will continue to swing.

w9 When operating TEST RUN, the thermostat will be continuously ON.w10After 3 minute compressor operation, if the indoor coil thermistor reads 5°F or below for 3 minutes, the compressor will

stop for 6 minutes.w11Heating area : Indoor coil temperature is more than 9 degrees above the room temperature.

Cooling area : Indoor coil temperature is more than 9 degrees below the room temperature.FAN area : Indoor coil temperature is within 9 degrees either way of the room temperature.

OC194-24

w8—9 Refer to page OC194-23.w12 When room temperature is 64°F or below, the compressor cannot operate.

When room temperature rises over 64°F the compressor starts after a 3-minute time delay.w13 Compressor ON time is decided by room temperature. Refer to page OC194-29.w14 In dry operation, compressor ON makes the fan speed LOW. Also, when the compressor OFF and the pipe temperature

is 79°F or less, the fan stops, or when the compressor OFF and the pipe temperature is below 43°F the fan speedchanges to LOW mode.It is not possible to set the fan speed with the remote controller

DRY OPERATIONDRY

operation

Initial dry operation

Room temperature is 64-F or lower

Duringcompressor ON

Compressor &thermostat ON

Vane initial settingVanesetting notch

10-minute compressorOFF timer start

Compressor OFF

Fan STOP

3-minutetime delay

10-minutecompressor

OFF

Compressor ON time set

Compressor ON

Fan speed LOW

1

Compressor &thermostat

ON

3-minutecompressoroperation

Compressor ONtime completes

NO

YES

NO

NO

YES

w14 w14

w13YES

YES NO

YES NO

NO

w9

YES

YESw9

NO

NO

w12

YES

NO

YES w8

OC194-25

MICROPROCESSOR CONTROL10

● Compressor andoutdoor fan : ON-OFF

1.OUTLINE OF MICROPROCESSOR CONTROL

● OFF-ON switching.● COOL/DRY-FAN selector switching.● Thermostat setting.● TIMER mode selector-switching and Timer

setting.● HIGH-LOW fan speed switching.● AUTO Vane selector (AIR DISCHARGE)

switching.● TEST RUN switching.● CHECK mode switching.

(Self diagnostic trouble shooting)

● Room temperature thermistor (TH1)● Pipe temperature thermistor (TH2)

● Auto vane’s angle setting.● Emergency stop.

● Compressor protectiondevice working

● Fan speed control.● Crankcase heater control

ON-OFF.● Self diagnostic function

Independent Control ofOutdoor Unit

OUTPUT to indoor unit

INPUT from indoor unit

INPUT to remote controller Remote controller board

● Processes and transmitsorders.

OUTPUT to remote controller

Indoor controller board

● Receives orders from remote controller and tem-perature data from indoor unit.

● Processes orders and data.● Controls indoor and outdoor operation.● Self diagnostic function.w System control operation.w Emergency operation.w Set by dip switch on indoor controller board.● Transmits the power to remote controller.

OU

TPU

T to

out

door

uni

t

12V

DC

Non-polar, two-wire cablemaximum length 550 yards

Signal

Remote controller● LCD indicator

Polar two-wire cable

12V

DC

1 2

12

Indoorunit

Outdoor unit

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOPFAN SPEED AUTO

RETURN

SWING

OC194-26

2. INDOOR UNIT CONTROL2-1 COOL operation

(1) Compressor control1 3-minute time delay

To prevent overload, the compressor will not start within 3 minutes after stop.2 The compressor runs when room temperature is higher than set temperature.

The compressor stops when room temperature is equal to or lower than the set temperature.The compressor maintains the previous state when the room temperature minus the set temperature is 0 degrees or more,or lower than 2 degrees.

3 The compressor stops in check mode or during protective functions.4 Coil frost prevention

To prevent indoor coil frost, the compressor will stop when the indoor coil thermistor (RT2) reads 34°F or below after thecompressor has been continuously operated for at least 16 minutes or more. When the indoor coil temperature rises to 50°For above, the compressor will start in a 3-minute(w2) time delay.w2 When the indoor coil temperature is 30°F or less, the compressor starts in 6 minutes.

NOTE : By turning OFF the dip switch SW1-3 on indoor controller board, the start temperature of coil frost prevention changesfrom 34°F to 36°F.

<How to operate>1 Press POWER ON/OFF button.2 Press the MODE button to display COOL.3 Press the SET TEMP. button to set the desired temperature.

NOTE: Set temperature changes 2°F when the SET TEMP. buttonis pressed one time.Cooling 65 to 87°F.

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Drain pump

Compressor

ON

ON

LOW or HIGH LOW or HIGH

ON

OFF

OFF

ON

OFF

3 minutes

OFF

OFF

Operation starts by

P O W E R b u t t o n

ON.

Operation stops by

P O W E R b u t t o n

OFF.

Room temperature

becomes equal to

set temperature.

Room temperature

rises above set temperature.

<COOL operation time chart>

w1 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this period has ended.

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOPFAN SPEED

SWING

AUTO RETURN

OC194-27

5 Coil frost protectionWhen indoor coil temperature becomes 5°F or below,coil frost protection will proceed as follows.<Start condition>After the compressor has been continuously operated for 3 minutes or more,and the indoor coil temperature has been5°F or below for 3 minutes,the coil frost protection will start.<Coil frost protection>Compressor stops for 6 minutes,and then restarts.lf the start condition is satisfied again during the first 10 minutes of compressor operation,both the indoor and outdoorunits stop,displaying a check code of“P6”on the remote controller.<Termination conditions>Coil frost protection is released when the start condition is not satisfied again during the allowance, or when the COOLmode stops or changes to another mode.

(2) Indoor fan controlIndoor fan speed LOW/HIGH depends on the remote controller setting.However, if an outdoor unit abnormality is detected, the indoor fan speed will be LOW, regardless of the remote controllersetting.

( i ) Fan speed LOW/HIGH depends on the remote controller setting regardless of the thermostat ON/OFF.(ii) Fan speed will remain on LOW if an abnormality in outdoor unit is detected. (5 minutes)

NOTE : Fan stops immediately if the unit stops or the check mode is started.

(3) Auto vane controlAuto vane position is set to 20 degrees airflow at the start-up of COOL operation.(a) Vane position set mode & swing mode.( i ) Every time AIR DISCHARGE button is pressed, setting will be changed .( ii ) Airflow direction can be changed with AIR DISCHARGE button.

When 60 degrees or 70 degrees airflow is selected with the LOW fan speed in COOL operation, “AUTO RETURN” willappear right side of the air direction display. One hour later, the airflow direction returns to 20 degrees automatically and“AUTO RETURN” will disappear. If the airflow direction is set to 20 degrees during “AUTO RETURN” indication, the timecounting for AUTO RETURN is cancelled.

1 Fan speed : LOW

2 Fan speed : HIGH

20° 60° 70°

20° 60° 70°

SWING

SWING45°

20 60 70 20 45 60 70

AUTO RETURN

<VANE POSITION>1 Fan speed : LOW 2 Fan speed : HIGH

OC194-28

(4) Detecting abnormalities in the outdoor unitAfter the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperatureand room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the dif-ference is still out of RANGE C,the outdoor unit is functioning abnormally. Thus, the compressor stops and check code “P8”appears on remote controller.RANGE A : Indoor coil temperature is more than 9 degrees above room temperature.RANGE B : Indoor coil temperature is within 9 degrees either way of room temperature.RANGE C : Indoor coil temperature is more than 9 degrees below room temperature.

Indoor coil temperatureminus room temperature

+9

0

-9

RANGE A

RANGE B

RANGE C

(degree)

(5) Drain pump controlThe drain pump works in COOL or DRY operation. When operation stops or changes to HEAT mode, the drain pump con-tinues to operate for 3 more minutes. The drain pump does not work in check mode.<Drain sensor>When both the drain pump and unit are operating, the drain sensor detects the temperature. This temperature tells whetherthe drain water level is above or under the drain sensor. If the drain water level rises above the drain sensor due to a drainpump malfunction, the unit will stop operating in order to prevent drain from overflowing. The check code “P5” on theremote controller will display this occurrence.

(6) Dew prevention heaterTo prevent dew from accumulating on the grille, the dew prevention heater is continuously ON during COOL operation.It is independent of the thermostat ON/OFF.

OC194-29

<DRY operation time chart>

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Drain pump

Compressor

ON

ON

DRY MODE DRY MODE

ON

OFF

OFF

ON

OFF

3 minutes

OFF

OFF

Operation starts by

P O W E R b u t t o n

ON.

Operation stops by

P O W E R b u t t o n

OFF.

Room temperature

becomes equal to

set temperature.

Room temperature

rises above set temperature.

w1 Even if the room temperature rises above the set temperature during this period, the compressor will not start until this period has ended.

2-2 DRY operation

(1) Compressor control1 3-minute time delay

To prevent overload, the compressor will not start within 3 minutes after stop.2 The compressor runs when room temperature is higher than set temperature.

The compressor stops when room temperature is equal to or lower than the set temperature.The compressor maintains the previous state when the room temperature minus the set temperature is 0°F or more, orlower than 2°F.

3 The compressor stops in check mode or during protective functions.

<How to operate>1 Press POWER ON/OFF button.2 Press the MODE button to display “DRY”3 Press the SET TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the SET TEMP.button is pressed one time.Dry 64 to 86°F

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOPFAN SPEED

SWING

AUTO RETURN

OC194-30

4The compressor will not start when the room temperature is 64°F or below.The compressor starts intermittent operation when the power is turned ON with room temperature above 64°F. The com-pressor ON/OFF time depends on the thermostat ON/OFF and the following room temperatures.After 3-minute compres-sor operation,● If the room temperature thermistor reads above 85°F with thermostat ON, the compressor will operate for 6 more min-

utes and then stop for 3 minutes.● If the room temperature thermistor reads 79°F~82°F with thermostat ON, the compressor will operate for 4 more min-

utes and then stop for 3 minutes.● If the room temperature thermistor reads 75°F~79°F with thermostat ON, the compressor will operate for 2 more min-

utes and then stop for 3 minutes.● If the room temperature thermistor reads below 75°F with thermostat ON, the compressor will stop for 3 minutes.● If the thermostat is OFF regardless of room temperature, the compressor will stop for 10 minutes.5Coil frost protection

Coil frost protection in DRY operation is the same as in COOL operation.6Coil frost prevention

Coil frost prevention does not operate in DRY operation.

(2) Indoor fan controlThe indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote con-troller. Also, the indoor fan does not run during compressor OFF.

(3) Auto vane & drain pump controlsSame as in COOL operation

(4) Detecting abnormalities in the outdoor unitAn abnormality in the outdoor unit can not be detected in DRY operation.

OC194-31

<How to operate>To change the air flow direction, press AIR DISCHARGE button.

1

20°

2

45°

3

60°

4 5

70° SWING

(1) COOL/DRY operationAt the start-up of COOL or DRY operation, the airflow direction in automatically set to 20°. After, it can be changed toanother direction with AIR DISCHARGE button on the remote controller.<Auto return>When 60° or 70° airflow is set with fan speed in LOW, “AUTO RETURN” appears right side of the air direction. One hourlater the direction changes to 20 degrees, automatically and “AUTO RETURN” disappears.

(2) During the operation OFF, the auto vane is the horizontal position.

(3) Automatic swing mechanism (For series PLH)To enable the automatic swing mechanism, turn ON SW17-10 of the remote controller and SW5-1 of the indoor controllerboard.Swinging air-flow or fixed air-flow can be selected by the AIR-DISCHARGE SWING/STOP button on the remote controller.● Swinging air-flow : The air flow swings between the horizontal discharge and the downward discharge.● Fixed air-flow : The air flow is fixed at the set discharge direction.

(4) When the vane motor is out of order or the connector is badly connected, the air discharge display of the remotecontroller continues.

Available in COOL operation with fan speed on HIGH orin HEAT operation.Unavailable in DRY operation.If fan speed changes from HIGH to LOW during 45°downward airflow in COOL mode, the direction automati-cally changes to 20°.

30- 1

45- downward 2

55- downward 3

70- downward 4

swing5

2-3 Auto vane control

Changes by pressingthe AIR DISCHARGEbutton.

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOPFAN SPEED

SWING

AUTO RETURN

OC194-32

<Timer function>AUTO STOP ··········The air conditioner stops after the set time lapses.AUTO START ········The air conditioner starts after the set time lapses.AUTO OFF ············Timer is not active.<How to operate>1. Press POWER ON/OFF button.2. Press “TIMER ON/OFF” button to select AUTO STOP or AUTO

START.3. Press “CLOCK/TIMER” button to set desired time.

Time setting is in 1 hour units for up to 24 hours.Each time TIMER SET button is pressed, set time increases by 1hour. When TIMER SET button is pressed and held, the set timeincreases by 1 hour every 0.5 seconds.

4. To cancel the timer operation, press POWER ON/OFF button.

2-4 TIMER operationWIRED REMOTE CONTROLLER

FILTER

CHECK MODE

TEST RUN

TIMER OFF TIMER

CHECK SET TEMP.

CLOCK AUTO AUTO

START STOPFAN SPEED

SWING

AUTO RETURN

COOL

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER

CHECK

TEST RUN

AIR SWEEP

SET TEMP. TIMER SET

F

FAN SPEED

SWING

AUTO RETURN

REMOTE CONTROLLER PAR-JH240KUS

2-5 Test run<Before test run>● After installing, wiring, and piping the indoor and outdoor units, check for refrigerant leakage, looseness in power supply or

control wiring, and mistaken polarity.● Use a 500-volt measure to check the resistance between the power supply terminal block and ground to make sure that it is

at least 1.0M'.Attention:Do not use the air conditioner if resistance is less than 1.0M''.

<How to operate>1. Turn ON main breaker.2. Press TEST RUN button twice. “TEST RUN” is displayed on

remote controller.3. Select “COOL” with MODE button to check that cool air is

beginning discharged.Select “HEAT” with MODE button to check that warm air is beginning discharged.(after a while)

4. Select LOW/HIGH with FAN SPEED button to check that the fanspeed changes properly.

5. Press AIR DISCHARGE button to check auto vane operation.6. Check outdoor fan operation.7. Check compressor operation referring to the indoor coil

temperature code displayed on the remote controller.8. After checking, press the ON/OFF button.

Displayed during test run

TEST RUN button

AUTO

STOP

<Timer setting example>This setting will stop the operation in 8hours.With the lapse of time, time display changes in 1hour units,showing remaining time.

·The test run works for 2 hours and stops automatically.To cancel the test run, press ON / OFF button or TIMER ON / OFF button.

OC194-33

(1) Indoor coil temperature codeDuring the test run, the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of roomtemperature. The code should fall with the lapse of time in normal COOL operation, and should rise in normal HEAToperation.

(2) Trouble during test run● If the unit malfunctions during the test run, refer to section 10 in this manual entitled “TROUBLESHOOTING.”● When the optional program timer is connected to the conditioner, refer to its operating instructions.

2-8 Emergency operationWhen the remote controller or microprocessor malfunctions but all other parts are normal, emergency operation is startedby setting the dip switch SW3 on the indoor controller board.<Before emergency operation>1. Make sure the compressor and the indoor fan are operating normally.2. Locate the defect with the self-diagnostic function. When the self-diagnostic function indicates “protective function is

working”, release the protective function before starting the emergency operation.CAUTION: When the self-diagnostic function indicates a check code of “P5” (drain pump malfunction), DO NOT start the

emergency operation because the drain may overflow.<How to operate>1. For emergency heating, turn the SW3 levers 2, 3, and 4 ON; and 1 OFF.

SW3 setting

2. Turn ON the outdoor unit breaker and then ON the indoor unit breaker.Emergency operation will now start.

3. During emergency operation, the indoor fan operates on high speed, the auto vanes do not operate.4. To stop emergency operation, turn OFF the indoor unit breaker.5. Movements of the vanes do not work in emergency operation, therefore you have to slowly set them manually to the

appropriate position.

NOTE: The remote controller POWER ON/OFF button can not start/stop emergency operations.

CAUTION: Do not use emergency cooling for more than 10 hours, as the indoor coil may freeze.

emergency

heating

2 .3 .4 ON

normal operation

microprocessor board

1 - 4 OFF

Code

Indoor coil temperature

Code

Indoor coil temperature

1

-40~34°F

9

~113°F

2

~50°F

10

~122°F

3

~59°F

11

~131°F

4

~68°F

12

~140°F

5

~77°F

13

~158°F

6

~86°F

14

~194°F

7

~95°F

15

Thermistor abnormality

8

~104°F

OC194-34

3 DIP SWITCH FUNCTIONSEach figure shows the initial setting by factory.

3-1 On remote controller board(1) SW17(Address selector)

SW17-1 ~ 6) Switch for address settingSW17-7) When two remote controllers are used, this switch sets the controller function.

OFF : The remote controller is set as a main controller.ON : The remote controller is set as a sub controller.

SW17-8) Switch for system back-upThis switch is not available for series PL.

3-2 On indoor controller board(1) SW1 (Mode selector)

SW1-1) Switch to change over between FAN mode and AUTOMATIC COOLING-HEATING CHANGE OVER modeOFF : Fan mode for cooling-only models including series PL.ON : AUTOMATIC COOLING-HEATING CHANGE OVER mode for heat pump models.

SW1-2) Switch to change over louver displayOFF : SwingON : Rotary

SW1-3) Switch for auto vaneOFF : Unit without auto vaneON : Unit with auto vane

SW1-4) Switch for drain pump(Drain lift-up mechanism)OFF : The drain pump works in only cooling mode.ON : The drain pump works in both cooling and heating mode. (For heat pump models)

SW1-5) Switch to change the temperature to start coil frost preventionOFF : 36_F (For previous special models)ON : 34_F (For For all current models)

(2) SW18 (Model select)8 7 6 5 4 3 2 1

OFFONSW18-1) Switch for timer mode setting

OFF : Single dayON : Timer every day

SW18-2) Switch for filter sign displayOFF : Filter sign absentON : Filter sign present

SW18-3) Switch for filter sign time settingOFF : 100HrON : 2500Hr

SW18-4) Switch for temperature unitOFF : -C (Celsius)ON : -F (Fahrenheit)

SW18-5) Switch for HEAT displayThis switch is not available PL

SW18-6) Switch for auto vane displayOFF : Auto vane display presentON : Auto vane display absent

SW18-7) Switch for swing displayOFF : Swing display presentON : Swing display absent

SW18-8) Switch for louver display OFF : Louver display presentON : Louver display absent

8 7 6 5 4 3 2 1OFFON

19 8 7 6 5 4 3OFFON

210

OC194-35

SW1-6) Switch for set temperature adjustment in heating modeThis is not available for series PL.

SW1-7) Switch for fan speed during thermostat OFF in heating modeThis is not available for series PL.

SW1-8) Switch for fan motor operation in heating modeThis is not available for series PL.

SW1-9) Switch for outdoor unit abnormality detectionOFF : When abnormality occurs, it is detected.ON : Even if abnormality occurs, it is not detected.

SW1-10) Switch for AUTO RESTART FUNCTIONOFF : This function does not work.ON : This function works.

(2) SW2 (Address selector)

Use SW2 to set unit-address for group control.

(3) SW3 (Emergency operation switch)

(4) SW5 (Model selector)

SW5-1) OFF : For models without automatic swing mechanismON : For models with automatic swing mechanism

SW5-2) OFF : For models with heating mode and cooling modeON : For models with only cooling mode including PL

SW5-3) Not yet usedSW5-4) OFF : LOSSNAY on air intake

ON : LOSSNAY air intake

(5) SW6 (Model selector)

SW6 is set on site for twin/triple control. This switch is not available for series PL

4 INDOOR FAN CONTROLIndoor fan relay output.(a) During fan ON

The indoor fan relay turns ON. One second later, the phase control will start.(b) During fan OFF

The phase control turns OFF. One second later, the indoor fan relay will turn OFF.

4 3 2 1OFFON

Normal operation(initial setting) For emergency cooling

6 5 4 3 2 1OFFON

4 3OFFON

2 14 3OFFON

2 1

4 3 2 1OFFON

OC194-36

11 TROUBLESHOOTING

The display “CENTRALLYCONTROLLED” on remotecontroller does not disap-pear.

1) Wrong address setting of remote con-troller/indoor controller board.

2) Timer adapter is connected to theremote controller.

3) Signal transmission error betweenindoor unit and remote controller.

1) Check the address setting of remote controllerand indoor controller.

2) Make sure the timer adapter is used correctly.3) 1 Turn another remote controller’s DIP SW17-

7 ON to make it sub controller.2 Connect the sub controller to the unit, and

turn circuit breaker ON.● If the display “centrally controlled” disap-

pears, replace the original remote controller.● If the display remains the same, replace the

indoor controller board.

When remote controllerPOWER button is turnedON, the check code“E0”appears.

1) Signal transmission error betweenindoor unit and remote controller

1) 1 Connect a sub remote controller.2 Turn circuit breaker ON.

If the display “centrally controlled” remains,replace the indoor controller board.

3 If the display disappears, turn the remotecontroller POWER button ON and check asfollows.

When remote controllerPOWER button is turnedON, operating displayappears, but disappearssoon.

1) Short circuit of indoor/outdoor connect-ing wire

2) Short circuit of transmission wire.3) Wrong operation of remote controller

due to noise wave emitted by otherappliances.

1), 2) Check the wire3) Turn the circuit breaker OFF, and then turn ON.If the remote controller remains abnormal,despite the above measures, replace the indoorcontroller board.

Despite turning POWERbutton ON, the remotecontroller display does notappear.

1) Damaged remote controller.2) Short circuit of transmission wire.3) Bad contact of indoor CN40.4) CN40 is attached to a sub unit.5) Damaged power board.6) Bad contact of CN2D.7) Blown fuse.8) Circuit breaker OFF.

1) Measure the voltage between terminals ofremote controller. If no voltage, remove the ter-minals and measure the voltage betweenwires. If the voltage is between 6VDC and 12V,replace the remote controller.

2) ~ 8) Check each point.If it is not defective, replace the indoorcontroller board.

1.TROUBLES IN TEST RUN

1

2

3

4

Remote controller

Operating Display

Operating Display

No Display

No Display

Sub remote controller

E0 Display

Operating Display

E0 Display

Operating Display

Malfunction

Malfunction ofindoor UnitMalfunction ofRemote controllerMalfunction ofindoor Unit andRemote ControllerMalfunction ofRemote controller

Symptom Cause Check points

(2) When one remote controller controls several units in the group con-trol, the LCD shows the unit address and check code of the first mal-functioning unit.

(3) To cancel the check mode, press the ON/OFF button. In remoteON/OFF control, press the remote ON/OFF switch. In centralizecontrol, turn OFF the ON/OFF button of centralize controller.

OC194-37

2-2 How to use the self diagnostic function for serviceA. For normal control with one unit and one remote controller

(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.(2) During the self diagnostic function, “CHECK MODE” appears at two positions on the remote controller display. Then, at

least 10 seconds later, the unit address and the check code is alternately displayed at one-second intervals.(3) Check and repair the unit according to the check code. (Refer to page 45.)

B. For group control using one remote controller(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.(2) Press the SET TEMP. button or SET TEMP. button on the remote controller to advance or go back to the

unit address. Each time SET TEMP. button is pressed, the unit address advances by one. Each time SETTEMP. button is pressed, the unit address goes back by one.The check code and the unit address, appear alternately.

(3) The check code “U8” means no malfunction has occurred since installation.The check code “E0” means the following conditions:● The unit address displayed on the remote controller does not apply to any unit.● power is not supplied to the unit.● Signal transmitting/receiving circuit is abnormal.

(4) Check and repair the unit according to the check code. (Refer to page 45.)

2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER(WIRED REMOTE CONTROLLER)2-1 When malfunction occurs during operation

When a malfunction occurs, the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remotecontroller.(1) ON the set temperature display part, “CHECK” appears, and the unit

address and the check code are displayed alternately at one-secondintervals. (Check mode)

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE

AIR SWEEP

REMOTE CONTROLLER PAR-JH24KUS

SET TEMP. TIMER SET

FILTER

CHECK

TEST RUN

Example

Checkcode

Unitaddress

CHECK mode

Check button

NOTE: The latest check code is memorize, even if the check mode is cancelled by the way mentioned above. It takes 60seconds maximum to display the memorize check code.

OC194-38

1) Check the indoor/outdoor connecting wire.2) Change the connection of electric wiring.3) Check the protection device.4) Measure the resistance of the outdoor coil ther-

mistor. If the resistance is normal, replace theoutdoor controller board.

Checkcode

Diagnosis of malfunction Cause Check points

E0 Signal transmitting/receivingerror(Indoor controller does notrespond to remote controllersignal.)

During individual unit control1) Bad contact of transmission

wire2) Signal transmitting/receiving cir-

cuit is abnormal.

1) Check the transmission wire.2) Check with another remote controller. If “E0” is

still indicated, replace the indoor controllerboard.If other check code appears. replace the origi-nal remote controller.

P3 Signal transmission error(Remote controller does notrespond to indoor controllersignal.)

1) Bad contact of transmissionwire

2) Signal transmitting/receiving cir-cuit is abnormal.

3) Wrong operation due to noisewave emitted by other appli-ances

1) Check the transmission wire.2) Check with another remote controller.

If “P3” is still indicated, replace the indoorboard.If other check code appears, replace the origi-nal remote controller.

3) Short-circuit between 1 and 2 of CN40 andattach CN40 to the following units.● Second unit in twin control● Second and third units in triple control● Sub units in group control

P4 Abnormality of drain sensor 1) Bad contact of transmissionwire

2) Damaged thermistor

1) Check the connector.2) Measure the resistance of the thermistor 1 - 3.

32°F ··6k' 59°F····3.2k' 86°F····1.8k'41°F ··4.8k' 68°F····2.6k' 95°F····1.5k'50°F ··3.9k' 77°F····2.2k' 104°F··1.3k'

If the resistance is normal, replace the indoorcontroller board.

P5 Malfunction of drain pump 1) Malfunction of drain pump 2) Damaged drain sensor

1) Check the drain pump.2) ● Check the drain sensor.

(Check the drop of water is on.)If the resistance is normal, replace the indoorcontroller board.

P6 Freezing protection/overheating protectionis working.

1) Short cycle of air cycle2) Dirty air filter3) Damaged fan4) Abnormal refrigerant

1) Clear obstructions from the air cycle.2) Clean the air filter3) Check the fan.4) Check the refrigerant temperature.

P7 System error 1) Wrong address-setting 2) Signal transmitting/receiving cir-

cuit of remote controller isabnormal.

3) Wrong SW6-setting

1) Check the address-setting.2) Check with another remote controller. If check

code other than “P7” appears, replace the origi-nal remote controller.

3) Check SW6 setting.

P8 Abnormality in outdoor unit 1) Wrong wiring of indoor/outdoorconnecting wire

2) Reversed phase3) Protection device is working4) Damaged outdoor coil thermis-

tor

P1

P2

Abnormality of room temper-ature thermistor (RT1)

Abnormality of indoor coilthermistor (RT2)

1) Bad contact of thermistor 2) Damaged thermistor

1) Check the thermistor.2) Measure the resistance of the thermistor.

Normal resistance should be as follows.32°F····15k' 86°F ····4.3k'50°F····9.6k' 104°F ····3.0k'68°F····6.3k'If the resistance is normal, replace the indoorcontroller board.

OC194-39

Wrong wiring Thermostat Phenomenon

OutdoorIndoor1

2

3

1

2

3

OFF Operation stops.

ON 4-Way valve is turned to ON. 9 minutes later, the check code “P8”appears on the remote controller display.

OutdoorIndoor1

2

3

1

2

3

OFF The outdoor unit stops.

ON Operation stops. 9 minutes later, the check code “P8” appears on theremote controller display.

OutdoorIndoor1

2

3

1

2

3

OFF The outdoor unit stops.

ON Operation stops. 9 minutes later, the check code “P8” appears on theremote controller display.

OutdoorIndoor1

2

3

1

2

3

OFF The outdoor unit stops.

ON Operation stops. 9 minutes later, the check code “P8” appears on theremote controller display.

OutdoorIndoor1

2

3

1

2

3

OFF The outdoor unit stops.

ON Operation stops. 9 minutes later, the check code “P8” appears on theremote controller display.

Disconnection between 1 and 1 or 2and 2.

OFF Operation stops.

ON 9 minutes later, the check code “P8” appears on the remote controllerdisplay.

Disconnection between 3 and 3.Normal operation.

OFF

ON

3. WRONG WIRING ON SITE3-1 Between remote controller and indoor unit

If the wire is disconnected between the remote controller and the indoor unit, nothing is displayed on the remote controllerwhen the POWER button is pressed. The beep sound will also not be heard.

3-2 Phenomenon due to wrong wiring between indoor and outdoor units

OC194-40

Vanes do not work. Vane motor does not work.Connector is poorly connected.Vane motor is poorly assembled.Indoor controller board is damaged.

Unit stops after 5 to20 seconds operation

Protection function is working.

Air discharge displayis OFF and AIR DIS-CHARGE button doesnot operate.

Indoor controller boarddeems the auto vanesare not attached to theunit.Horizontal angle cannot be detected.

In this case, remotecontroller is normal.

Power ON/OFF buttonis not available.

Beep sound is heard, but display is turnedOFF.

Beep sound is not heard,and display remains OFF.

Indoor/outdoor connect-ing wire is connectedincorrectly.Indoor/outdoor connect-ing wire shorts.Compressor protectoris damaged.Outdoor controllerboard is defective.

Remote controller isdamaged.Transmission wire ispoorly connected

Transmission wire isdamaged.Connector is poorlyconnected.Indoor terminal block ispoorly connected.Remote controller ter-minal block is poorlyconnected.

Vane motor is damaged.Vane motor relay is damaged.

Refer to check code on remote controller display.See page OC194-38.

Indoor controller isdamaged.Dip switch setting iswrong.Indoor controller isdamaged.Vane motor is dam-aged.Auto vane is wired afterpower is turned to ON.

Vane motor is damaged.

4. OTHER TROUBLES AND CAUSES

“CENTRALLY CONTROLLED” is displayed.

OC194-41

4. How to check the parts PL12FK1/18FK21/24FK21/30FK21/36FK31/42FK21

Parts name Check points

Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 50-F~86-F)

Measure the resistance between the terminals using a tester. (Surrounding temperature 68-F~86-F)

Measure the resistance between the terminals using a tester. (Surrounding temperature 68-F~86-F)

Measure the resistance between the terminals using a tester. (Surrounding temperature 50-F~86-F)

Vane motor

Drain pump

Drain sensor

(Refer to the thermistor)

(Refer to the thermistor)

Room temperature

thermistor (TH1)

Liquid pipe

thermistor (TH2)

1

2

Yellow

Yellow

123

Normal

4.3k"~9.6k"

Abnormal

Open or short

Abnormal

Open or short

Normal

0.6k"~6.0k"

NormalConnector Abnormal

300" Open or short

Normal Abnormal

101" Open or short

Orange

Red

White

Red — Yellow

Red — Blue

Red — Orange

Red — WhiteBlue Yellow

35

1

2

4

Measure the resistance between the terminals using a tester.Fan motor

11

22

33

Red

White

Black

Relay connector

Protector

12/18FK

110.9"

132.5"

24FK

101.7"

121.4"

Abnormal

Open or short

30,36FK

122.0"

141.8"

42FK

101.7"

121.4"

Red-Black

White-Black

Motor terminal or

Relay connector

Normal

PL

M

OC194-42

0

10

20

30

40

50

-4 14 32 50 68 86 104 122

< Thermistor for lower temperature >

Temperature (-F)

Res

ista

nce

(K"

)

<Thermistor Characteristic graph>

Room temperature thermistor(TH1)Liquid pipe thermistor(TH2)

Thermistor R0=15k' ± 3%Fixed number of B=3480k' ± 2%

Rt=15exp { 3480( ) }

32°F 15k'50°F 9.6k'68°F 6.3k'77°F 5.2k'86°F 4.3k'104°F 3.0k'

Thermistor R0=6.0k' ±5%Fixed number of B=3390k' ±2%

Rt=6exp { 3390( ) }

32°F 6.0k'50°F 3.9k'68°F 2.6k'77°F 2.2k'86°F 1.8k'104°F 1.3k'

Thermistor for lower temperature

1273

1273+{(t-32)/1.8}

1273

-4 32 68 104 140 176

< Thermistor for drain sensor >

Temperature (-F)

0

1

2

3

4

5

6

7

8

9

10R

esis

tanc

e (K"

)Thermistor for drain sensor

1273+{(t-32)/1.8}

OC194-43

4-WAY AIR FLOW SYSTEM12

Using this grill enables to select the air discharge direction. The air flow can also be regulated by adjusting the widths of eachdischarge outlet. Choose the adequate method according to the conditions in the room where the panel is to be installed.W For 2-direction discharge, the widths of the outlets must be under a fully opened condition.

Slide-shutter

Dischargeoutlet

Slide-shutter

(Slide-shutter viewed from A)

A

Applied undershipment fromfactory

The figures inside ( )are for PLH30/36/42FK

When slide-shutteris fully open

When slide-shutterfully closed.

When slide-shutterremoved.

When applying insu-lation used to closeoff the air outlet.

Slide-shutter fully closed

Slide-shutter

Removingslide-shutter

Insulation used to close off theair outlet

Opening width11-13/16(25-9/16) Opening width

7-7/8(19-11/16) Opening width17-11/16(35-7/16)

Adjusting the discharge outlets (Only when discharge outlets are fully opened or closed).●● Remove slide-shutter by cutting into the broken-lines using a cutter. When doing so pay attention not to damage

the insulation around the slide-shutter.

Do not damage insulationmaterial along the slide-shutter

Slide-shutter

Location where to cut into

Insulation material

Vane Slide-shutter

Internal surface view of the grill

OC194-44

Opening measurements for PLH30/36/42FK1 are within ( ).

●● Regular ceiling heightWhen ceiling is of regular height (For example 8.2ft) set each out-let at a standard width (11-13/16).

●● Relatively high ceilingSet the outlets during installation.The outlet width can be adjusted in the range of 7-7/8 to 11-13/16using the slide knob.

●● High ceilingAdjust each outlet width to 7-7/8 to enable air to reach maximumdistance. Applicable for rooms with ceiling height of 9.8ft.

●● 4-direction air dischargeRemove slide-shutter at installation and adjust the outlet width to17-11/16. Close remaining outlets to selected width.

●● 3-direction air dischargeDuring installation close one outlet and shield it with the insula-tion panel. Adjust widths of remaining 3 outlets to match the roomspace.

●● 2-direction air dischargeDuring installation close two outlets and fully open (17-11/16width) the remaining 2.W For 30/36/42FK, open the longer outlets and close the shorter

outlets.

■■ Adjustment examples of discharge direction &air flow

Unit : inch

11-13/16 (25-9/16)

11-13/16~7-7/8 (25-9/16~19-11/16)

8.2ft.

9.8ft.

8.2ft. to9.2ft.

11-1

3/16

(11

-13/

16)

7-7/8 (19-11/16)

7-7/8 (19-11/16)

7-7/

817-11/16 (35-7/16)

17-11/16 (35-7/16)

17-11/16 (35-7/16)

17-11/16 (35-7/16)

11-1

3/16

~7-

7/8

17-1

1/16

7-7/

8~11

-13/

16

11-1

3/16

~7-

7/8

7-7/

8~11

-13/

16

11-1

3/16

~7-

7/8

OC194-45

Selecting arrangement of discharge outlet and adjusting the width for PL12FK1/ 18/24FK21.

Constrained Conditions When Selecting Discharge Outlet Width.(PL18/24FK21)Total width of four outlets must exceeds 31-1/2.

Unit : inch

(1)When the outlet A is close to a window, widen A and narrow C to raise the cooling power of A. e.g. 1-A :11-13/16 ➝ 17-11/16

1-C :11-13/16 ➝ 7-7/8

(2)When ceiling height exceeds 9.5ft adjust 4 outlets to 7-7/8 each to 2 outlets to 17-11/16 each.

When the outlet B is close to a window, narrow D to 11-13/16. However, in case of 2, do not narrow D.

Total width of all outlets must exceed 31-1/2. The width of B and D is to be 9-13/16 when the ceiling height is 8.9ft.

In this case, other widths are not available.

11-13/16

9-13/16

11-13/16

9-13/16

17-11/16

17-11/16

7-7/8

11-13/16

0

D Examples of application Precautions

11-13/16

9-13/16

9-13/16

7-7/8

7-7/8

0

17-11/16

11-13/16

0

C

11-13/16

9-13/16

11-13/16

11-13/16

17-11/16

17-11/16

7-7/8

9-13/16

17-11/16

B

11-13/16

9-13/16

9-13/16

7-7/8

7-7/8

0

0

0

17-11/16

A

7.9

8.9

7.9

8.9

7.9

8.9

7.9

8.9

—

1

(1 : 1)

2

(1 : 1.5)

3

(1 : 2)

4

(1 : 1)

5

(1 : 1)

1

2

1

2

1

2

1

2

1

Room pattern

Discharge outlet

W Ceiling heightratio of room length and width

When ceiling height is 7.9 feet.

A

1-1

D

BC

A

2-1

D

BC

A

3-1

D

BC

4-1

D B

C

5-1

BA

When ceiling height is 8 to 8.9 feet.

A

1-2

D

BC

A

2-2

D

BC

3-2

BC

4-2

D B

C

OC194-46

Selecting arrangement of discharge outlet and adjusting the width for PL30FK21/ 36FK31/ 42FK21.

Constrained Conditions When Selecting Discharge Outlet Width.(PL30/36/42FK)Total width of four outlets must exceeds 55-1/8.

Unit : inch

When the unit is installed near a window, the longer outlet (B or D) must be in direction of the window.

When the ceiling height exceeds 9.8ft, adjust the longer outlets to 35-7/16 each. Or adjust the longer outlets to 19-11/16 each and the shorter outlets to 7-7/8 each.

7-7/8 is not available, as the total width of opened outlets must exceed 55-1/8.

25-9/16

19-11/16

25-9/16

19-11/16

35-7/16

35-7/16

17-11/16

17-11/16

0

D Examples of application Precautions

17-11/16

11-13/16

11-13/16

9-13/16

11-13/16

0

35-7/16

25-9/16

9-13/16

C

25-9/16

19-11/16

25-9/16

19-11/16

35-7/16

35-7/16

17-11/16

17-11/16

35-7/16

B

17-11/16

11-13/16

11-13/16

9-13/16

11-13/16

0

0

0

9-13/16

A

7.9

8.9

7.9

8.9

7.9

8.9

7.9

8.9

—

6

(1 : 1)

7

(1 : 2)

8

(1 : 3)

9

(1 : 2)

10

(1 : 2)

1

2

1

2

1

2

1

2

1

Room pattern

Discharge outlet

W Ceiling heightratio of room length and width

When ceiling height is 7.9 feet.

A

6-1

D

BC

A

7-1

D

BC

A

8-1

D

BC

9-1

D B

C

10-1

A

BC

When ceiling height is 8 to 8.9 feet.

A

6-2

D

BC

A

7-2

D

BC

8-2

BC

9-2

C

D B

OC194-47

FRESH AIR INTAKE (Installation at site)1. Location for installing fresh air intake

2. Air flow & static pressure conditions for freshair intake

Detail drawing of fresh air intake

Be sure to use a duct fan (booster fan) when applying freshair intake. As for sequential operation with the duct fan, seeItem 3.

3. Sequential operation method with duct fan.(Booster fan)

● Have the duct fan “ON” whenever indoor is in operationmode (air-conditioning and fan).(1) Connect optional multiple remote controller adapter

(PAC-725AD) to indoor microprocessor board CN51.(2) Drive the relay after connecting the DC12V relay

between the Yellow and Orange connector lines.* Use a relay under 1W.

MB: Electromagnetic open/close power relay for duct fan.X: Auxiliary relay (DC12V LY-1F).

4

0

–4

–8

–12

–16

–20

Fresh-Air P-V curveP[in.W.G]O10–1E

xter

nal

pre

ssu

re o

f d

uct

50 100V:Fresh air valve [CFM]

Booster fan required area

150 200

Ambient air flow [CFM]Be sure to secure insulation material by tape and such

Be sure to secure insulation material by tape and such

Green

Yellow

OrangeRed

Brown

5

1Connector (5P)

Package side Installation at site

MB

Adapter (PAC-725AD)

Indoor unit microprocessor board CN51

● The fresh air intake duct can be connected by removing the knockout holes on the casing of the indoor unit and attaching thefresh air intake flange and duct. When applying fresh air intake, confirm that the mixed air is within applicable conditions as theintake air mixes with the ambient air.Figure is for PL12/18/24FK

Indoor unit microprocessor board.

Distance between indoormicroprocessor boardand relay must be within30 feet.

CN51Adapter(PAC-725AD)

OC194-48

BRANCH DUCT (installation at site)

1. Branch Duct Installation Procedure 2. Branch Duct Installation

To discharge air from a branch duct, install it during the initial installation.

Install branch duct at site by following procedure(1) Remove insulation along the broken-lines on unit

surface at the back-side of the indoor unit. Knockout the branch duct connecting point.

(2) Secure flange, procured locally, by twelve STscrews (4.0 dia).

(3) Connect flange to duct.(4) Tear off the insulation material on the surface of the

main body of the unit, push in the insulation andsecure it air tightly.

3. Air flow & Static Pressure Characteristics of Branch Duct■ The air flow and static pressure characteristics of the branch duct when installing a standard panel (4 direction discharge

or when applying a 2-direction discharge is as follows.Opening measurements for PL30/36/42FK air within ( ).

Standard: 4 direction discharge 2 direction discharge

4 direction discharge (11-13/16OO4 directions). 2 direction discharge (17-11/16OO2 directions).

Branch duct

3-15/16

11-13/16

(11-13/16)

Branch duct

3-15/16

17-11/16

11-1

3/16

(2

7-9/

16)

11-1

3/16

(25-

9/16

)

Static pressure

[in.W.GO10–2]

12

Hi

Lo

Hi

Lo

8

4

0 50 100 150

11-13/16O4 directions

Air capacity

[CFM]

Static pressure

[in.W.GO10–2]

12

8

4

0 50 100 150

11-13/16O4 directions

Air capacity

[CFM]

Hi

Lo

Static pressure

[in.W.GO10–2]

12

8

4

0 50 100 150

1617-11/16O2 directions

Air capacity

[CFM]

Hi

Lo

Static pressure

[in.W.GO10–2]

12

8

4

0 50 100 150 200

1617-11/16O2 directions

Air capacity

[CFM]

● PL18FK21 ● PL24FK21 ● PL24FK21● PL18FK21

OC194-49

3 direction discharge

4 direction discharge ( )25-9/16OO2 directions11-13/16OO2 directions

3 direction discharge ( )35-7/16OO1 directions11-13/16OO2 directions

Branch duct

(3-15/16)

(11-13/16)

(27-

9/16

)

(35-

7/16

)

Sta

tic p

ress

ure

[in.W

.GO

10–2

]

0 50 100 150 200 250 300 350 400 450 500 550

20 16 12

8 4

Air capacity

[CFM]

Sta

tic p

ress

ure

[in.W

.GO

10–2

]

0 50 100 150 200 250 300 350 400 450 500 550

20 16 12

8 4

Air capacity

[CFM]

Sta

tic p

ress

ure

[in.W

.GO

10–2

]

0 50 100 150 200 250 300 350 400 450 500 550

28 24 20 16 12

8 4

Air capacity

[CFM]

Sta

tic p

ress

ure

[in.W

.GO

10–2

]

0 50 100 150 200 250 300 350 400 450 500 550

28 24 20 16 12

8 4

Air capacity

[CFM]

● PL30FK21/ 36FK31 ● PL42FK21 ● PLH42FK21● PL30FK21/ 36FK31

OC194-50

13 SYSTEM CONTROL

Unit

Remote control display board

Remote controller

Unit Unit

Two remote controllers can be used to control either oneunit or a group of units. Units can then be controlled froma distance or at close range. Units operate according tothe latest command from either remote controller.

1 Group controlwith a singleremote controller(See page OC194-51.) Unit

Remote controller

Unit Unit

Many units, installed at different locations, can be startedand controlled with a single remote controller. The remotecontroller can be mounted in a different location using anon-polar two-wire cable, which can be extended up to500m. A maximum of 50 units can be controlled with asingle remote controller. All units operate in the samemode.

2 Control using tworemote controllers(See page OC194-52.) Unit

Remote controller

Unit Unit

3 Both remoteON/OFF and indi-vidual controls(See page OC194-52.)

w Timer adapter(PAC-SA89TA-E)is needed.

Optional adapter

Remote ON/OFF switch

Remote controller

Relay box

Unit

All units can be turned on or off simultaneously using aremote ON-OFF switch. Also, each unit can be controlledindividually by each remote controller. Dunning remoteON-OFF control, a message of “CENTRALLY CON-TROLLED” is displayed on the LCD of the remote con-troller.This is available for both one unit control and several unitscontrol.

4 Individual controlby groupingremote controllers(See page OC194-53.)

Unit

Remote controller

Unit Unit

By grouping the remote controllers in one place, severalunits installed at different locations can be controlled indi-vidually, and operation conditions of all units are visiblewithout a special control board. The control method is thesame as that of the single unit with a single remote con-troller.

5 Multiple remotecontrol display(See page OC194-54.)

w Multiple displayadapter (PAC-SA88HA-E)is needed.

Several units can be controlled with a remote control dis-play board. Operation conditions of all the units are visiblewith the remote control display board.Individual control by each remote controller is also possi-ble.

6 Auto restart func-tion (See page OC194-54.)

Circuit breaker

Remote controller

A unit can be started or stopped with the circuit breakeron or off.Remote controller is also available.With this function, when the power is restored after powerfailure, the unit will restart automatically. (However, whenthe remote controller POWER ON/OFF button is OFF, theunit will not start.)

1. VARIETY OF SYSTEM CONTROL FUNCTIONS

OC194-51

2. GROUP CONTROL BY A SINGLE REMOTE CONTROLLERA maximum of 50 units can be started in order according to the dip switch settings

2-1 How to wire(1) Connect the remote controller to the double terminal block

on the indoor controller board of the master unit, that is,No.0 unit. (See Figure 1.)

(2) Connect the double terminal block of the master unit to thedouble terminal block of No.1 unit.

(3) Connect the double terminal block of No.1 unit to the dou-ble terminal block of No.2 unit.

(4) Continue the process until all the units are connected withtwo-wire cables. (See Figure 2.)

(5) Remove the connector CN40 from the indoor controllerboard of each unit except the master unit. (See Figure 3.)

(6) Set the unit-address of each unit with SW2 on the indoorcontroller board following the instructions below.

2-2 How to set unit-addressThe unit-address also serves as a successive-start timer whichstarts each unit at intervals of 1 second. If two or more unitshave the same unit-address in a group control, operation stopsdue to system error. Be sure to set SW2 correctly following theinstructions below.(1) Each lever of SW2 shows the number as follows.

SW2-1 : 1 SW2-4 : 8SW2-2 : 2 SW2-5 : 16SW2-3 : 4 SW2-6 : 32

(2) Total number of levers turned to ON shows the address ofthe unit.If you turn ON SW2-1 and SW2-2, the unit-address is setas No.3.

(3) In this way, set from the. master unit to the last unit.Do not forget to set the master (No. 0) unit.

2-3 Unit control The remote controller can control all units ON/OFF, temperature,air flow, and swing louver. However, the thermostat ineach unit turns to ON or OFF individually to adjust the room temperature.

Unit address & startdelay in seconds.

SW2

Master (No. 0) unit

0

12

34

56

ALL OFF

No. 1 unit

1

12

34

56

1 ON

No. 2 unit

2

12

34

56

2 ON

No. 4 unit

4

12

34

56

3 ON

No. 8 unit

8

12

34

56

4 ON

No. 16 unit

16

12

34

56

5 ON

No. 32 unit

32

12

34

56

6 ON

Setting examples

To remote

controller To the next unit

To the next unit

The last unit dose not have

this wire.

Next unit electrical box

Master unit electrical box

12

3L1

12

3L1

L2 L2

GR GR

Master unit

No.1 unit No.2 unit Last unit

2-wire cable

Figure 2

Figure 3Indoor controller board ▼

Figure 1

CN40 SW2

OC194-52

3. CONTROL USING TWO REMOTE CONTROLLERSTwo remote controllers can be used to control either one unit or a group of units. Units operate according to the latest com-mand from either of the two remote controllers.Before operation, be sure to set one remote controller as the “main controller” and the other as the “sub controller”, using dipswitch SW17-7 of the remote controller.

3-1 How to set SW17-7 (See Figure 5.)(1) For the main remote controller, turn SW17-7 OFF.(2) For the sub remote controller, turn SW17-7 ON.

3-2 Remote controller LCD indication(1) The same indications always appear on both the

main and sub remote controllers, except during thetimer operations.

(2) Timer operations can be set with either of the tworemote controllers. However, LCD indication appearsonly on the remote controller used for timer-settings.

(3)If both remote controllers are set for timer operationwith different time-settings, the timer operation withthe shorter remaining-time is effective.

(4) Self-diagnostic function is available with either of thetwo remote controllers. If one of the remote con-trollers is used for the self-diagnostic function, theother remote controller displays the check mode.If the self-diagnostic function is reset by either of thetwo remote controllers, both remote controllers arereset.

4. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLSThis method is available to control one unit or any number of units.The following operations are available by connecting a relay, a timer adapter (PAC-SA89TA-E), and a remote ON/OFF switchto the system. Timer adapter is an optional part. Other parts are available on the market.(A) To start all units in order by remote ON-OFF switch (B) To stop all units simultaneously by remote ON-OFF switch (C) To switch between the remote ON-OFF control and the individual remote control4-1 SystemFigure 6 shows the case of three units. The same is the case with any number of units.

Figure 4 Individual operation

Remote controller

Remote controller

Remote controller

Remote controller

Multiple operation

SW17

Remote controllerFigure 5

Remote controller

power supply of control circuit

Remote ON/OFF switch

2-wire remote controller cable

Figure 6

Relay box

Timer adapter cables

Timer adapter PAC-SA89TA-E

87

65

43

2

O F F

1

Main remote controller Sub remote controller

Turn SW17-7 ON.8

76

54

32

O F F

1

OC194-53

NOTE1 : Install the relay box where you can be serviced it easily.NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control

circuit.NOTE3 : When the power supply of the control circuit is 208/230V AC,

● Do not connect the control circuit wire to the remote controller cable directly.● Do not place the control circuit wire and the remote controller cable into the same conduit tube.

4-2 Basic wiringCaution : Before starting all units simultaneously by the remote ON-OFF switch, be sure to connect a sequence-start timer

into the remote ON-OFF circuit. Otherwise, a rush of starting current may damage the power supply.

w1After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller.w2After all units stop together, if SW2 is turned OFF, each unit can be individually started by each remote controller.

5. INDIVIDUAL CONTROL BY GROUPING THEREMOTE CONTROLLERS

● Grouping the remote controllers allows individual control and cen-tralize monitoring of units installed in different places without a spe-cial control board.

● Remote control cables are extendible up to 550 yards When thecable length exceeds 33ft, use the double-insulated two-care cablesuch as Belden 9407. Also, the cable thickness must be No. 22AWG or above.

● When gathering the power ON/OFF switches of air conditionersnear the remote controllers, you should also install the powerON/OFF switch near each unit to prevent electric trouble duringservicing.

4-3 Switch function of remote ON-OFF switch

SW1(Switches betweenremote ON and OFF.)

ON(Start)OFF

(Stop)

All units start together.Individual control is not available.All units stop together.Individual control is not available.

SW2(Switches between remote ON-OFF and individual control)

ON(Remote ON-OFF control)

Each unit can be controlled by eachremote controller.Remote ON-OFF switch is not available.

OFF(Individual control)

w1

w2

Power supply

Remote ON/OFF switch

No.1 unit relay box

No.2 unit relay box

Next unit

T

X2 X2

T

Glow switch or pilot lamp can be combined to easily identify the on-off mode of SW1 and SW2.

To No.1 unit

To No.2 unit

Timer adapter cables

Remote controller

T

X2

SW1

SW2

T

X2

Remote

controller cable (2-core)

Remote controller

OC194-54

6. MULTIPLE REMOTE CONTROL DISPLAYYou can control several units with a multiple remote control display, bywiring an optional multiple display adapter (PAC-SA88HA-E) with relaysand lamps on the market.How to wire(1) Connect the multiple display adapter to the connector CN51 on the

indoor controller board.(2) Wire three of the five wires from the multiple display adapter as shown

in the figure below.

7. AUTO RESTART FUNCTIONBy setting the dip switch SW1-8 to ON, the air conditioner can be started/stopped by power supply ON/OFF.If the air conditioner is OFF before the power failure, it will not start operation by power restore.•This function is mainly to emergency performance when the power supply stops temporarily. Therefore, since the protec-tion function (for example, clank case heater and prevention from restarting in 3 minutes, etc.) of the device is not operat-ed, this function should not be used mostly.

[Notes on Signs]X1:Relay (for operation lamp)X2:Relay (for check lamp)RL:Operation LampGL:Check Lamp[Field supplied parts]Relays:12V DC with rated coil power

consumption below 0.9W.Lamps:Matching to power supply voltage.

CN51

connector(5P)

GREEN

Power supply

Electrical insulation is needed.

Wiring at the actual placeOptional multiple display adapter

The maximum distance between indoor board and relay is 33ft.

YELLOW

ORANGERED

BROWN

5X2

X2 GL

RLX1X1

1

<Wiring >

Indoor control Board

Power supply

Remote controller cable

Relay box (Field supply)

Remote controller

Remote controller

Remote controller

3wires3wires3wires

2wires No.1 unit No.2 unit No.3 unit

Multiple remote control ON-OFF display (Field supply)

(Operation check)

<System>

Power supply

RL-1

GL-1

Multiple Remote Control Display

Multiple remote controller adapter

connect to the connector CN51

Relay box

5

X1-1

X2-1 1

<Wiring diagram>

RL-2

GL-2

RL-3

No.1 unit

GL-3

X1-1

X2-1

X1-2

X1-3

X2-3

X2-2 5

1

No.2 unit

5

1No.3 unit

X1-2

X2-2

X1-3

X2-3

Remote controller

A

BBrown

Red Orange Remote controller

A

BBrown

RedOrange

A : an optional timer adapterB : a single-throw switch

For remote control, connect the optional timer adapter (PAC-SA89TA-E)

<Wiring>

8. TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL

OC194-55

DISASSEMBLY PROCEDURE14

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

1. Removing the air intake grille(1) Slide the lever in the direction of the arrow 1.(2) Open it 90 deg.(3) Slide the intake grill in the direction of the arrow 2 and

remove it.(4) Slide the two knobs on the left and right in the direction of

the arrow 3 and remove the filter.

3. Removing the fan motor(1) Loosen two screws to remove the bell mouth.(2) Remove the clamp screws (2) from the fan motor lead.(3) Remove the capacitor wires.(4) Remove the fan motor setting screws (3).

Indoor unit (PL24FK21)

2. Removing the electrical box(1) Pull the knob to remove the room temperature thermistor.(2) Remove the screw from the box cover.(3) Grasp the lead lines and pull them out.(4) Remove the 2 mounting screws from the box.(5) Remove the connectors from the box.(6) Pull out the box.

<Electrical parts inside the box>Controller boardTransformerRelayTerminal block

Photo 1

Photo 2

Filter knob

Lever

Intake grill

Filter

Bell mount fixed screws

Room temperature thermistorBox set screws

Box cover set screws

Photo 3

Fan nut

Photo 4 Fan motor mounting screws

OC194-56

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

4. Removing the drain pump, drain sensor, and indoor coilthermistor(1) Remove the fan (nut).(2) Remove the electrical box (3 screws).(3) Remove the service panel screws (2 pcs).(4) Hold the knob and remove the service panel.(5) Remove the drain pump set screws (2 pcs).(6) Remove the screw from the drain sensor assembly.(7) The indoor coil thermistor is inserted in the holder.

5. Removing the panel(1) Remove the connectors.(2) Remove the two of the panel set screws and loosen the

other two screws.(3) Slide the panel slightly to remove it.

Photo 5

Photo 7

Service panel

Drain pan

Screws

Panel set screws

6. Removing the drain pan and terminal box(1) Remove the panel.(2) Remove the electrical box.(3) Remove the bell mouth.(4) Remove the DP and CB plates and cover FA screws (2

screws each).(5) Remove the drain pan support (5 C-screws).(6) Pull out the drain pan.

W Pull the left and right of the pan gradually. Be careful notto crack or damage the pan.

(7) Loosen the two screws on the terminal box cover.(8) Remove the cover.

Photo 8 DP plate

7. Removing the heat exchanger(1) Remove the panel.(2) Remove the panel mouth.(3) Remove the turbo fan.(4) Remove the electrical box.(5) Remove the drain pan.(6) Remove the coil support. (2 pcs.)(7) Remove the separator U-assembly (5 screws).(8) Remove the external piping cover (2 pcs.).

Photo 9 Screws (2)

Drain pump setscrews

Indoor coil thermistor Drain sensor set screws

Drain pan support

Cover FACB plate

Terminal boxcover screws

Separator U-assembly set screwsPiping cover

Screws (2)

Terminal box

Coil support

OC194-57

15 PARTS LIST

PL12FK, PL18FK2, PL24FK2 PANEL PARTSPL12FK1, PL18FK21, PL24FK21

1

2

3

4

5

6

1

1

1

4

1

1

1

1

1

4

1

1

1

1

1

4

1

1

1

1

1

4

1

1

MV

F2

INDOOR PANEL

250V 0.5A

No. Parts No. Parts Name Specifications Drawing No.

Q'ty/set Price

Unit AmountRemarks

Circuit Diagram Symbol

Recom- mended

Q'tyPL

12 18 24FK2 FK21 FK2 FK21FK FK1

1

1

1

4

1

1

1

1

1

4

1

1

T7W 410 003

T7W 410 223

R01 K01 500

R01 K01 054

R01 K01 691

T7W 411 239

AIR OUTLET GRILL

VANE MOTOR

AIR FILTER

CATCH

INTAKE GRILL

FUSE

Part number that is circled is not shown in the figure.

4

5

4

3

2

1

OC194-58

PL12FK, PL18FK2, PL24FK2 FUNCTIONAL PARTSPL12FK1, PL18FK21, PL24FK21

2

3

16

17 18

15

265

1

11

14

19

21

24

27 6 7

8

10

12

13

4

9

25

23

20

22

29

OC194-59

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

3P (L1,N,GR)

2P (1,2)

2P (1,2)

2P (1,2)

SGR-25 DTC

SGR-37 DTC

12+ 220V

8.5+ 220V

250V 6A

3P (L1,N,GR)

39ft

33ft

TB2

TB5

TB4

TB4,5

MF1

MF1

C1

C1

I.B

I.B

F1

TB12

T

DP

DS

TH2

TH1

R.B

R.B

No. Parts No. Parts Name Specifications Drawing No.

Q'ty/set Price

Unit AmountRemarks

Circuit Diagram Symbol

Recom- mended

Q'ty

PL12

FK FK1

18FK2 FK21

24FK2 FK21

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

3

1

1

T7W 420 716

R01 556 246

R01 556 246

T7W E02 716

T7W 410 762

T7W 411 762

R01 K01 114

T7W 410 255

T7W 409 255

T7W 410 310

T7W E06 310

T7W 410 239

T7W 411 716

T7W A01 799

T7W 410 355

R01 K01 523

R01 K01 266

R01 K01 202

T7W 410 480

T7W 411 480

R01 K42 480

T7W 410 529

R01 K01 119

T7W E01 119

R01 J01 202

T7W 410 200

T7W E01 713

T7W 351 077

T7W E03 049

R01 L72 095

T7W 556 305

T7W A00 305

T7W 829 070

R01 08K 097

R01 K04 105

R01 005 533

R01 A48 524

TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

FAN MOTOR

FAN MOTOR

TURBO FAN

FAN MOTOR CAPACITOR

FAN MOTOR CAPACITOR

INDOOR CONTROLLER BOARD

INDOOR CONTROLLER BOARD

FUSE

TERMINAL BLOCK

TRANSFORMER

DRAIN WATER LIFT-UP MECHANISM

DRAIN SOCKET

DRAIN SENSOR

PIPE TEMPERATURE THERMISTOR

HEAT EXCHANGER

HEAT EXCHANGER

HEAT EXCHANGER

DRAIN PAN

BELL MOUTH

BELL MOUTH

ROOM TEMPERATURE THERMISTOR

REMOTE CONTROLLER BOARD

REMOTE CONTROLLER BOARD

REMOTE CONTROLLER COVER

REMOTE CONTROLLER COVER

SCREW CAP

REMOTE CONTROLLER CABLE

REMOTE CONTROLLER CABLE

CONTROLLER CASE

SPL WASHER

RUBBER MOUNT

SENSOR HOLDER

DRAIN PLUG

RED: 15.5VAC, 0.3A BRN: 11.0VAC, 0.6A

Part number that is circled is not shown in the figure.

OC194-60

PL30FK2, PL36FK3, PL42FK2 FUNCTIONAL PARTSPL30FK21, PL36FK31, PL42FK21

2

3

27 27

5

15

16

17

18

1 47

8

9

10

12

13

11

6

16

14

20

22

25

19

24

26

21

23

29

OC194-61

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

1

1

1

2

2

2

1

1

1

1

1

1

1

1

1

2

1

2

1

1

1

1

1

1

6

1

1

1

2

2

2

2

1

1

1

1

1

1

1

1

1

2

1

2

1

1

1

1

1

6

1

1

1

1

1

2

2

2

1

1

1

1

1

1

1

1

1

2

1

2

1

1

1

1

1

1

6

1

1

1

2

2

2

2

1

1

1

1

1

1

1

1

1

2

1

2

1

1

1

1

1

6

1

1

TB2

TB5

TB4

TB4,5

MF1,2

MF1,2

C1,2

I.B

I.B

F1

TB12

T

DP

DS

TH2

TH1

R.B

R.B

3P (L1,N,GR)

2P (1,2)

2P (1,2)

2P (1,2)

SGR-35DTC

SGR-36DTC

12+ 220V

250V 6A

3P (L1,N,GR)

39ft

33ft

No. Parts No. Parts Name Specifications Drawing No.

Q'ty/set Price

Unit AmountRemarks

Circuit Diagram Symbol

Recom- mended

Q'ty

PL

FK2 FK21 FK3 FK31 FK2 FK21

30 36 42

1

2

2

2

2

1

1

1

1

1

1

1

1

1

2

1

2

1

1

1

1

1

6

1

1

1

1

1

2

2

2

1

1

1

1

1

1

1

1

1

2

1

2

1

1

1

1

1

1

6

1

1

T7W 420 716

R01 556 246

R01 556 246

T7W E02 716

T7W 413 762

T7W 414 762

R01 K01 114

T7W 410 255

T7W 410 310

T7W E06 310

T7W 410 239

T7W 411 716

T7W A01 799

T7W 410 355

R01 K01 523

R01 K01 266

R01 K01 202

R01 K46 480

T7W 414 480

R01 08K 097

T7W 413 529

R01 K01 119

T7W E01 119

R01 J01 202

T7W 410 200

T7W E01 713

T7W 351 077

T7W E03 049

R01 L72 095

T7W 556 305

T7W A00 305

T7W 829 070

R01 K04 105

R01 005 533

R01 A48 524

TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

TERMINAL BLOCK

FAN MOTOR

FAN MOTOR

TURBO FAN

FAN MOTOR CAPACITOR

INDOOR CONTROLLER BOARD

INDOOR CONTROLLER BOARD

FUSE

TERMINAL BLOCK

TRANSFORMER

DRAIN WATER LIFT-UP MECHANISM

DRAIN SOCKET

DRAIN SENSOR

PIPE TEMPERATURE THERMISTOR

HEAT EXCHANGER

HEAT EXCHANGER

SPL WASHER

DRAIN PAN

BELL MOUTH

BELL MOUTH

ROOM TEMPERATURE THERMISTOR

REMOTE CONTROLLER BOARD

REMOTE CONTROLLER BOARD

REMOTE CONTROLLER COVER

REMOTE CONTROLLER COVER

SCREW CAP

REMOTE CONTROLLER CABLE

REMOTE CONTROLLER CABLE

CONTROLLER CASE

RUBBER MOUNT

SENSOR HOLDER

DRAIN PLUG

RED: 15.5VAC, 0.3A BRN: 11.0VAC, 0.6A

Part number that is circled is not shown in the figure.

OC194-62

1

2

3

4

5

6

1

1

2

8

2

1

1

1

2

8

2

1

1

1

2

8

2

1

1

1

2

8

2

1

MV

F2

INDOOR PANEL

250V 0.8A

No. Parts No. Parts Name Specifications Drawing No.

Q'ty/set Price

Unit AmountRemarks

Circuit Diagram Symbol

Recom- mended

Q'ty

PL30 36 42

FK2 FK21 FK3 FK31 FK2 FK21

1

1

2

8

2

1

1

1

2

8

2

1

T7W 413 003

T7W 410 223

R01 K01 500

R01 K01 054

R01 K21 691

T7W 413 239

AIR OUTLET GRILL

VANE MOTOR

AIR FILTER

CATCH

INTAKE GRILL

FUSE

PL30FK2, PL36FK3, PL42FK2 PANEL PARTSPL30FK21, PL36FK31, PL42FK21

4

4

4

5

5

3

2

4

1

3

Part number that is circled is not shown in the figure.

OC194-63

OPTIONAL PARTS16

1-2 Feature of program timer(1) Daily timer function

Daily timer can be set in 30 minutes units for up to 24 hours.Each unit can be set for unit ON, unit OFF, or setback operation.

(2) Setback operation (PAC-SC32PTA)Set back operation is useful for reducing running costse.g. At a hotel with a 24-hour system

8:00~23:00 Cooling operation with set temperature at 79°F23:00~8:00 Setback operation with 4 degrees of setback

As shown in the chart on the right, the set temperature rises 4 degreesautomatically during the setback operation. When the setback operationends, normal operation will begin.

(3) Weekly timer function Daily timer function can apply to each day of the week.

1. TIMERWhen using a program timer, a program timer adapter (PAC-825AD) is also needed.(PAC-825AD is included with PAC-SC32PTA.)

1-1 Program timer specifications

83-F

79-F

8:00Normal

operation

23:00Setback operation

8:00Normal

operation

Part No. PAC-SC32PTA (with set back function)Model Name Program timer

Parts name Program timerParts No. PAC-SC32PTAExterior dimensions (inch) 5-4/32x4-23/32x23/32 (130x120x18mm)Installation Wall mountType of clock QuartzClock accuracy ±50 second / month at 77°F

Display-Time-Week-Timer setting unit

Liquid crystal displayLiquid crystal displayLiquid crystal display

Program cycle 24 hoursTimer setting unit 30 minutesNo. of set points 48 / dayPower rating 5V DC ±5% (Supplied by Remote Controller)

SET/MONITOR

SET S M T W T F S

MONITOR

PROGRAM TIMER

PAC-SC32PTA

TODAY

ON

WEEKLY

SETTING

OFF

ON

SET BACK

OFFCLOCK DAILY TIMER

SET BACK

SET BACK

DAILY

SETTING

12 15 18 21 24

0 3 6 12 15FILTER

CHECK MODE

TEST RUN

Use 5-wire cable

2-wire cable

Connect to CN1 Connect to CN1

4

Connect to indoor unit

1-3 How to connect program timer(1) Install the program timer next to the remote controller the same way as the remote controller is installed.(2) Connect the program timer and the remote controller with a 5-wire cable as shown in the figure below

NOTE:While the program timer is connected to the remote controller, the24hour ON/OFF timer on the remote controller will not operate.

OC194-64

1-4 Names and functions<PAC-SC32PTA>

WEEKLY TIMER SETTING DISPLAY

Sets timer for a week.

SET/MONITOR

SET S M T W T F S

MONITOR

PROGRAM TIMER PAC-SC32PTA

TODAY

ON

WEEKLY SETTING

OFF

ON

SET BACK

OFFCLOCK DAILY TIMER

SET BACK

SET BACK

DAILY SETTING

12 15 18 21 24

0 3 6 12 15

CURRENT TIME DISPLAY

During MONITOR status,currenttime is display.During Daily timer setting, atime desire for timer setting isdisplayed.

SET BACK DISPLAY

Indicates the set back range.

DAILY TIMER SETTING DISPLAY

24 hours is divided into 48 blocks and eachblock express 30 minutes.The block display consists of 3 pattern.

“MONITOR” :Indicates the current timer set-ting. All switch expect MODESELECTOR SW are invalidatedthen.This is the normal status.

“SET”: Set to “SET” mode for clock adjustment,charge of week day, daily and weeklytimer setting.

Push SW to advance the time. Each time the button ispushed the time advance by 1 minute, pushing continuouslyadvances by 1 minute at 0.5 second interval, and when the lowerdigit of minute becomes 0 indication advances in 10 minutesunit.

SW is used for reversing the time. Each time the button ispushed the time reverses by 1 minute, pushing continuouslyreverses the time by 1 minute at 0.5 second interval, and whenthe lower digit of minute becomes 0 indication reverses in 10minutes unit.

Pushing SW moves the week day lightdisplay in order ofS → M →T →W …

enabling to set the week day.

SET BACK SETTING SW

Used for set back setting.SET/MONITOR DISPLAY

When SET is displayed, clock adjustment,change of weekly day, daily and weekly timersetting can be performed.During MONITOR is display, all switchesexcept SET/MONITOR SW are invalidated.This is normal status.

WEEK DAY SETTING SW

Used for week day setting.

MODE SELECTOR SW

Using this switch select “MONITOR” or “SET”Mode.

CLOCK ADJUSTMENT SW

Used for adjustment of the current time.

WEEKLY TIMER SW

Used for setting timer in day of week unit.

ON/SET BACK/OFF SW

Used to specify the time setting pattern.

DAILY TIMER SW

Used for timer setting in 30 minutes unit.

Set back1=2°F 2=4°F 4=8°F 6=12°F 8=16°F

OC194-65

1

2

3

4

5

BRNREDORNYLWGRN

3. MULTIPLE REMOTE CONTROLLER ADAPTERThis adapter is needed for remote indication (operation/check). Adapter connection is described on page 49.

Part No. PAC-SA88HA-E

Part No.

Applicable Model

PAC-SG03TM-E

PL12/18/24/30/36/42FK

Part No.

Applicable Model

PAC-SG01KF

PL12/18/24/30/36/42FK

5. HIGH EFFICIENCY FILTER ELEMENT

6. AIR OUTLET SHUTTER PLATEPart No.

Applicable Model

PAC-SG06SP-E

PL12/18/24/30/36/42FK

4. MULTI FUNCTION CASEMENT (For HIGH EFFICIENCY FILTER AND FRESH AIR INTAKE)

ORN 1

2

3

BRN

RED

2. TIMER ADAPTERThis adapter is needed for system control and for operation via external contacts. Adapter connection is described on page 49.

Part No. PAC-SA89TA-E

Oc256b~1.qxd 7/20/2001 10:01 AM Page 3

© Copyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.Distributed in Jun. 2001. No.OC256 REVISED EDITION-B 20Distributed in Mar. 2001. No.OC256 REVISED EDITION-A 20Distributed in Dec. 2000. No.OC256 nPrinted in Atlanta 07/2001

New publication, effective Jun. 2001Specifications subject to change without notice

Oc256b~1.qxd 7/20/2001 10:01 AM Page 4

3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904

www.mrslim.com

Specifications are subject to change without notice.