lg_lbum7280bl exploded view

8/6/2019 LG_LBUM7280BL Exploded View

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Ceiling Duct TypeAir ConditionerSERVICE MANUAL

MODELS: LB-K3660BLLB-K4260BLLB-K4880BLLB-L6080BLLB-M7280BL



Contents

Functions .................................................................................................................................3

Product Specifications (Cooling & Heating) ..........................................................................5

Dimensions ..............................................................................................................................7

Refrigeration Cycle Diagram ..................................................................................................9

Wiring Diagram ......................................................................................................................10

Operation Details ...................................................................................................................15

Installation of Indoor, Outdoor Unit .....................................................................................18

Cycle ........................................................................................................................................32

Cycle Troubleshooting Guide ...............................................................................................35

Electronic Parts Troubleshooting Guide .............................................................................36

Electronic Control Device .....................................................................................................39

Exploded View and Replacement Parts List .......................................................................40

–2–



Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Soft Dry Operation Mode

Auto Operation(Auto Change Over)

Deice (defrost) control (Heating)

Auto Restart

–3–

Hot-start Control (Heating) • The indoor fan stops until the evaporator piping tempera-ture will be reached at 28°C.

High head height Drain pump(Optional)• A standard drain-head height of up to 700mm is possible.

Central Control(Optional) • It is operating individually or totally by central control function.

Group Control(Optional Wiring)• Each controller can control 16 units and 8 controllers can connect.

• It operates maximum 16 units by only one wired remote con-troller and each unit starts random to prevent overcurrent.

• Room temperature sensor. (Thermistor)

• Maintains the room temperature in accordance with the Setting Temp.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is inhibited for approx. 3 minutes.

• High, Med, Low

• Intermittent operation of fan at low speed.

• Although the air-conditioner is turned off by a power failure, it is restarted automati-cally previous operation mode after power supply.

• The setting temperature and desired operation mode are auto-matically set by fuzzy rule.

• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.



–4–

Remote Controller

Operation ON/OFF

Operation Mode Selection

Fan Speed Selection

Room Temperature Display

Temperature Setting

Setting the Timer

Weekly Program

(Coolingmodel only)

(Heatingmodel only)

(Low) (Med) (High)

Cooling Operation Mode ( )

Heating Operation Mode ( ) Auto Operation Mode ( )

Soft Dry Operation Mode ( )

Fan Operation Mode

HI AUTOMEDLO

Program Holiday

SET/CLR

MinHour

Week

T im er C an celT im er C an cel

(Except LB-E6084HL)

: High:39°C ↔ LOW:11°C

: Fan Operates without cooling & heating

Cooling HeatingDown to 18°C

Up to 30°C

Down to 16°C

Up to 30°C



Product Specifications (Cooling & Heating)

– 5 –

Power Source Ø, V, Hz"

Cooling Capacity kcal/h(BTU/h)

W

Input W

Heating Capacity kcal/h(BTU/h)

W

Input W

Rated Load Amp. Cooling A

Heating A

Air Volumn Cooling(H/M/L)CMM(m3 /min)

Heating(H/M/L)Refrigerant(R-22) g

Drain Hose In. Dia mm

Main CableNo. X mm2

Connecting Cable

Remote Control Type

Refigerant Control Type

Fuction Soft Dry

Timer

Self Diagnosis

Deice Operation

Hot Start

Zone Control(Optional)

Central Control(Optional)

Group Control(Optional wiring)

Weekly Programning

Thermistor

Drain Pump(Optional)

Auto changeover(Auto Operation: CL)

Stand-by Consumption 0

Connecting Pipe Liquid Inch

Gas (mm)

Dimension Indoor mm

Outdoor (W x H x D)

Net Indoor Kg

WeightOutdoor

1, 220-240, 50 1, 220-240, 50 3, 380-415, 50 3, 380-415, 50

9,072(36,000) 10,584(42,000) 12,096(48,000) 15,120(60,000)

10,551 12,309 14,067 17,585

3,600 5,100 4,900 7,000

9,072(36,000) 11,314(45,500) 12,096(48,000) 15,120(60,000)

10,551 13,190 14,067 17,585

3,400 4,700 4,400 6,500

16 22.5 8.0 12.7

14 21 7.3 12.5

35/32/28 46/38/32 49/47/44 55/50/46

35/32/28 46/38/32 49/47/44 55/50/46

2,240 3,600 3,351 4,629

22.6 22.6 22.6 22.6

3*5.5 3*8.5 4*5.5 4*5.5

5*1.25 5*1.25 5*1.25 5*1.25

L.C.D Wired L.C.D Wired L.C.D Wired L.C.D Wired

Orifice/Capil lary Orifice/Capillary Orifice/Capillary Orifice/Capillary

Yes Yes Yes Yes

24 Hours On/Off 24 Hours On/Off 24 Hours On/Off 24 Hours On/Off

Yes Yes Yes YesYes Yes Yes Yes

Yes Yes Yes Yes

Optional Optional Optional Optional


Yes Yes Yes Yes

Yes Yes Yes Yes

Yes Yes Yes Yes


Yes Yes Yes Yes

Yes Yes Yes Yes

3/8(9.52) 3/8(9.52) 3/8(9.52) 3/8(9.52)

5/8(15.88) 3/4(19.05) 3/4(19.05) 3/4(19.05)

1,030*350*435 1,030*350*435 1,030*350*435 1,120*400*575

870*800*320 900*1,220*370 900*1,220*370 900*1,220*370

37 37 40 51

72 90 92 92

Model LB-K3660BL LB-K4260BL LB-K4880BL LB-L6080BL



– 6 –

Power Source Ø, V, Hz"

Cooling Capacity kcal/h(BTU/h)

W

Input W

Heating Capacity kcal/h(BTU/h)

W

Input W

Rated Load Amp. Cooling A

Heating A

Air Volumn Cooling(H/M/L)CMM(m3 /min)

Heating(H/M/L)Refrigerant(R-22) g

Drain Hose In. Dia mm

Main CableNo. X mm2

Connecting Cable

Remote Control Type

Refigerant Control Type

Fuction Soft Dry

Timer

Self Diagnosis

Deice Operation

Hot Start

Zone Control(Optional)

Central Control(Optional)

Group Control(Optional wiring)

Weekly Programning

Thermistor

Drain Pump(Optional)

Auto changeover(Auto Operation: CL)

Stand-by Consumption 0

Connecting Pipe Liquid Inch

Gas (mm)

Dimension Indoor mm

Outdoor (W x H x D)

Net Indoor Kg

WeightOutdoor

3, 380-415, 50

18,143(72,000)

21,101

7,000

18,143(72,000)

21,101

6,800

13,0

13,0

73/68/62

73/68/626,931

22.6

4*5.5

5*1.25

L.C.D Wired

Orifice/Capillary

Yes

24 Hours On/Off

Yes

Yes

Yes

Optional

Optional

Yes

Yes

Yes

Optional

Yes

Yes

1/2(12.7)

1(22.05)

1,420*400*575

1,245*930*650

58

185

Model LB-M7280BL



Dimensions

– 7 –

1. Indoor

"A" "B" "C" "D" "E" "F" "G" "J" "K" "L" "M" "N" "P" "Q" "R" "S" "T" "V" "W" "X" "Y"MODEL NOLBNK3660BL

LBNK4260BL

LBNK4880BL

LBNL6080BL

1040

1040

1040

1120

350

350

350

400

56 0

56 0

56 0

58 0

282

282

282

305

712

712

71 2

71 2

282

282

282

327

868

868

868

935

366

131

131

171

234

250

250

234

-

210

210

23 9

170

170

170

183

165

161

161

165

934

934

934

1014

937

937

937

1014

548

548

548

567

40

40

40

67

120

120

120

130

22

22

22

22

79

79

79

84

972

972

972

1052

514

514

514

533

"A" "B" "C" "D" "E" "F" "G" "J" "K" "L" "M" "N" "P" "Q" "R" "S" "T" "V" "W" "X" "Y"MODEL NOLBNM7280BL 1415 400 580 303 833 327 1221 258 300 228 172 186 1313 1313 567 67 130 22 78 1351 533

"D" "F"

"X" "Y"2323

LIQUIDLINE

SUCTION

LINE

"C"

"B"

"A"

"G"

"E"

169

"T"

"W"

"S"

250

"J" "K" "L" "K"

"Q"

"P"

"R"

"M"

"N"

"M"

"N"

"J" "K" "L" "K"

"X"

"A"

"S"

250

"P"

"E"

"Q"

"G"

"T"

169"R"

LIQUIDLINE

SUCTIONLINE

"B""D"

23 23"Y"

"C"

"F"

"V""W"

(36K)

(42K/48K/60K)

(72K)



2. Outdoor Unit

– 8 –

Model No. a b c TYPELBUK3660BL 870 320 800 ALBUK4260BL 900 370 1220 BLBUK4880BL 900 370 1220 BLBUL6080BL 900 370 1220 BLBUM7280BL 1,245 650 930 C

Type: A Type: B Type: C

(Unit: mm)

b

a

c

b

a

c

c

b

a



Refrigeration Cycle Diagram

– 9 –

Heat Pump

• If 60K Model is installed at a distance of 15m, 525g of refrigerant should be added(15-7.5) x 70g = 525g

36K BTU/h 5/8" 3/8" 7.5 15 7.5 12.5 50

42K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

48K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

60K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

72K BTU/h 1'' 1/2" 7.5 25 7.5 20 70

Capacity

Gas Liquid

Elevation B(m)Piping LengthA(m)

* AdditionalRefrigerant

(g/m)

Pipe Size (Diam-eter: Ø)

inch

Standard StandardMax. Max.

Orifice Number

Capacity Orifice Number

36K 62

42K 74

48K 86

60K 86

72K 98



–10–

Wiring Diagram

Model : LB-K3660BL1. Indoor

2. Outdoor

INDOORMOTOR

DRAINPUMP

BR

BR

YL

O R

R D

B L

BL

RD

B L

B L

B K

GN / Y L

GN/YL

C O M P

FUSE250V10A

T E M P .

T H E R M I S T O R

PIPETHERMISTOR

FLOAT S/W

REMOTECONTROL

ZONECONTROL

TERMINALBLOCK

7

3 ( L )

4 ( N )

5

6 T O O U T D O O R U N I T

63H2

Tmo

CM

CM

CH1

RD

GN/YL

HIGH PRESSURE SWITCH FOR HEATING

TERMINAL BLOCK

COMPRESSOR

COMPRESSOR

CRANK CASE HEATER FOR CM

RED

GREEN/YELLO

THERMISTOR FOR PIPE TEMP.

MAIN TERMINAL BLOCK

RUN CAPACITOR FOR FMo

OUTDOOR FAN MOTOR

START CAPACITOR FOR CM

WHITE

REVERSING COIL

RELAY FOR FMo

OUTDOOR FAN MOTOR

FUSE (250V, 5A)

BLUE

YELLOW

MAGNECTIC CONTACTOR

RUN CAPACITOR FOR CM

FUSE (250V, 5A)

DEICER PCB

BLACK

ORANGE

C TH

TM

Co

FMo

Cs

WH

20SV

52F1

FMo

F1

BL

YL

52S,52C

Cr

F1

D.P

BK

OR

7 8

1 TM

240V 1Ø, 50Hz

POWER SUPPLY

BK

6 3 H 2 52C

L1 L2

T1 T2

A2

A1

BK

WH

BK

52F1 1 2

3 4

5 6

WHTIMERBK

WH

YL

YL

BL

BL

WH

F1

BKWHWH

WH

20SV

WH

BK

RD

BL BL

RD

BK

BK

WH WH

BK

BK

BKGN/YL

GN/YL

Tmo T o

t h e i n d o o r u n i t

WH

G N

/ Y L

2 3

L N

1

2

3

4

5

6

BK

BK

BK

BK

BK

YL

YL

YL

BK

RD

WHRD

RD

OR

R CS

CM

CrCsFMo

BKBK

BKBKWH

52S

REACTOR

A2

A1

T3

L3

T2

L2

TNSNC NO NC NO

C TH

D.P



– 11 –


2. Outdoor

F1

S.S(A)

S.S(B)

52C(A)

52C(B) 52F1

D.P

TNS

COMP49C

R S

Tm1(L)

F1,2

49C

FMo

49FMo

BL

RD

FUSE(250V,5A)

INTERNAL O.L.P FOR COMP.

OUTDOOR FAN MOTOR

INTERNAL T.P FOR FMo

BLUE

RED

DEICER PCB.

THERMISTOR FOR PIPE TEMP.(OUTDOOR)

4-WAY VALVE COIL

START CAPACITOR FOR FMo

BLACK

WHITE

RELAY FOR COMP

RELAY FOR FMo

SOFT START PCB.


BROWN

YELLOW

MAIN TERMINAL BLOCK

TERMINAL BLOCK FOR CONNECTING

3 PHASE DETECTOR

5 SEC. DELAY TIMER

ORANGE

GREEN/YELLOW

D.P

C TH

20SV

Cs

BK

WH

52C

52F1

S.S

Cr

BR

YL

Tm

Tmo

3.P.D

T.D

OR

GN/YL

2(N)

C

COMP49C

R SCPOWER SUPPLY1Ø,230V,50Hz~ FMo

49FMoFMo49FMo 20SV 20SV

T O I N D O OR

U N I T

CH F

Cs(A)

Cr(A)

Cr(B)

T.D

Tmo

F2

BK

BL

BK

NCNO

C TH

BK

RDRD

BKWH

WH

BK

BR

BR

BL

BL

B R

R D

B K

B L

B K

O R

B

K

O

R

Y

L

B

K

B K B K

B K B K

1 ( L ) 2 ( N )

3

4

5

O

R

O R

Y L

Y L

Y L

RD

RD

B K

CH F W H

B K B K B K

WH

WH

WH

WH

WH

W H

W H

W H W H W H

W H

Y L

YL

TB3

TB5

TB1

TB2

TB6

CN-Power

CN-Power

RY-Comp

4

3

4

4

1

3

2

5 6

7 83

4

3

4

3

RY-S/Cap

Cs(B)RY-Comp

RY-S/Cap

INDOORMOTOR

DRAINPUMP

BR

BR

YL

O R

R D

B L

BL

RD

B L

B L

B K

GN / Y L

GN/YL

C O M P

FUSE250V10A

T E M P .

T H E R M I S T O R

PIPETHERMISTOR

FLOAT S/W

REMOTECONTROL

ZONECONTROL

TERMINALBLOCK

7

3 ( L )

4 ( N )

5




– 12 –


2. Outdoor

INDOORMOTOR

DRAINPUMP

BR

BR

YL

O R

R D

B L

BL

RD

B L

B L

B K

GN / Y L

GN/YL

C O M P

FUSE250V10A

T E M P .

T H E R M I S T O R

PIPETHERMISTOR

FLOAT S/W

REMOTE

CONTROL

ZONECONTROL

TERMINALBLOCK

7

3 ( L )

4 ( N )

5


RTM

3Ø,380-415V, 50HzPOWER SUPPLY

S T N

BK

BK

BK

BK

RD

WH

WH

RD

OR

BK63H2

3.D.P

WH

WHYL

D.P C TH

TNSNO NC

WH

OR

BK52F1

52C 1

2

3

4

5

6

31T/B1

T/B2

T/B3

32B

A

FMo49FMo

FMo49FMo

YL BK

OR

BK RD

WH

CM

1 2

3 4

5 6

7 8

YL BK

OR

BK

BK

BL

BL

BL

BL

WH

WH

Co Co

20SV

BK

WH

BL

RD

GN/YL

GN/YL

TMo T o t h e i n d

o o r u n i t

1

2

3

4

5

6

BK

WHWH YL

RD

F1

BK

63H2

C TH

49FMo

20SV

CM




REVERSING COIL

COMPRESSOR

52C

TM

52F1

D.P

3.D.P

MAGNECTIC CONTACTOR

MAIN TERMINAL BLOCK

RELAY FOR FMo

DEICER PCB

3 PHASE DETECTOR

Co

FMo

F1

TMo

SOL


OUTDOOR FAN MOTOR

FUSE (250V,10A)

TERMINAL BLOCK

SOLENOID VALVE

F1

R

AB

S T

R S C



– 13 –

Model : LB-L6080BL1. Indoor

2. Outdoor

INDOORMOTOR

DRAINPUMP

BR

BR

YL

O R

R D

B L

BL

RD

B L

B L

B K

GN / Y L

GN/YL

C O M P

FUSE250V10A

T E M P .

T H E R M I S T O R

PIPETHERMISTOR

FLOAT S/W

REMOTE

CONTROL

ZONECONTROL

TERMINALBLOCK

7

3 ( L )

4 ( N )

5


RTM

3Ø,380-415V, 50HzPOWER SUPPLY

S T N

BK

BK

BK

BK

RD

WH

WH

RD

OR

BK63H2

WH

WHYL

D.P C TH

TNSNO NC

WH

OR

BK52F1

52C 1

2

3

4

5

6

31T/B1

T/B2

T/B3

32B

A

FMo49FMo

FMo49FMo

YL BK

OR

BK

T3T2 T1

RD

WH

CM

1 2

3 4

5 6

7 8

YL BK

OR

BK

BK

BL

BL

BL

BL

WH

WH

Co Co

20SV

SOL

BK

WH

BL

RD

GN/YL

GN/YL

TMo T o t h

e i n d o o r u n i t

1

2

3

4

5

6

BK

WHWH YL

RD

F1

BK

63H2

C TH

49FMo

20SV

CM

BL

OR

YL




REVERSING COIL

COMPRESSOR

BLUE

ORANGE

YELLOW

52C

TM

52F1

D.P

3.D.P

BK

GN/YL

MAGNECTIC CONTACTOR

MAIN TERMINAL BLOCK

RELAY FOR FMo

DEICER PCB

3 PHASE DETECTOR

BLACK

GREEN/YELLOW

Co

FMo

F1

TMo

SOL

RD

WH


OUTDOOR FAN MOTOR

FUSE (250V,10A)

TERMINAL BLOCK

SOLENOID VALVE

RED

WHITE

F1

R

AB

S T



– 14 –

Model : LB-M7280BL1. Indoor

2. Outdoor

BK

F1BK

BK

TNSNC NO NC NO

C TH

BK

BK BK

1 2

3 4

5 6

7 8

R

B A

S T

BK

WH

WH

WH WH

WH

WH F2

RD

RD

RD

BK

GN/YL

1 ( L ) 2 ( N )

3

4

5

Tmo

T O I N D O OR

U N I T

YL

O R

Y L

B L

BK

BL

BL

F1,2,3

49C

FMo

49FMo

Co

D.P

C TH

20SV

52C

52F1

TM

TMo

63H1

63H2

3.P.D

HIGH PRESSURE SWITCH


3 PHASE DETECTOR

MAGNETIC CONTACTOR

RELAY FOR FMo

MAIN TERMINAL BLOCK

TERMINAL BLOCK FOR CONNECTING


DEICER PCB

THETMISTOR FOR PIPE TEMP.(OUTDOOR)

4-WAY VALVE COIL

FUSE(250V,10A)

INTERNAL O.L.P FOR COMP.

OUTDOOR FAN MOTOR


20SV

Y L B R O R B K

Y L

B R

O R B K

Y L B R O R B K

Y L

B R

O R

B K

RD

1 3 5 31

2 4 6 32 A

B

R D

B K

W H

GN/YL

F3

Tm

Co

FMo49FMo

FMo49FMo COMP

49C

Co

T1 T3 T2

POWER SUPPLY3Ø,380-415,50HzTERMINAL(4P)

R S T N

63H1

63H2

52C

52F1

3.P.D

D.P

RD

INDOORMOTOR

DRAINPUMP

BR

BR

YL

O R

R D

B L

BL

RD

B L

B L

B K

GN / Y L

GN/YL

C O M P

FUSE250V10A

T E M P .

T H E R M I S T O R

PIPETHERMISTOR

FLOAT S/W

REMOTE

CONTROL

ZONECONTROL

TERMINALBLOCK

7

3 ( L )

4 ( N )

5




– 15 –

Operation Details

(1) The function of main control

1. Time Delay safety Control

• 3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.

(Protection of compressor)• 30sec... The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating

operation is OFF or switched to the other operation mode while compress is off.

While compressor is running, it takes 3~5 seconds to switch.

2. Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of

already being set to the best speed for Dry Operation by Micom Control.

3. Cooling Mode Operation

• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-troller and the operation diagram is as following.

Intake Air temp.

SET TEMP.+0.5°C

(COMP. ON)

SET TEMP. -0.5°C

(COMP. OFF) More than More than

3 minutes 3 minutes

Selecting Selecting Selecting

fan speed fan speed fan speed

COMPRESSOR ON OFF ON OFF ON

INDOOR FAN Low Low



– 16 –

Intake Air temp.

Setting temp.+3°C(Compressor OFF)

Setting temp.

(Compressor ON)

INDOOR FAN Low OFF Low Low OFF

COMPRESSOR ON OFF ON OFF

• A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when

it becomes lower than 40˚C fan stops.

• B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at seleted fan

speed, when it becomes lower than 39°C, the fan operates at low speed.

4. Heating Mode Operation (Except Cooling Model)The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Hot Start Low SelectingFan Speed

minimum 3min

Selecting fanspeed

minimum

10sec.

1min

A A

minimum

10sec.

B

5. Hot-Start Control

• The indoor fan stops until the evaporator piping temperature will be reached to 31 °C.

• The operation diagram is as following.

PIPINGTEMPERATURE

1min

COMPRESSOR

INDOOR FAN

ON

28°C

: Selected Fan : Low Fan : Fan Stop

31°C



– 17 –

6. Defrost Control• Defrost control is availavle 45 minutes later since heating mode operation started, and it will not prolong over

10 minutes.

• Defrost control is carried out when the outdoor pipe temp. falls below -6°C for more than 3 minutes after 45

minutes passed from starting of heating operation.

• Defrost ends after 10 minutes passed from starting of defrost operation or when the outdoor pipe temp. rises

over 12°C after 5 minutes passed from starting of defrost.

7. Self-diagnosis Function• 'CHECK' will flash in the remote controller display when a problem occurs. Then please contact your dealer.

• Correct the accident point as shown in the table below before restarting operation.

• During the normal operation 'CHECK' won't be displayed in the remote controller.

Remote controller LCD Accident Point

CH 01 Indoor room temperature thermistor error

CH 02 Indoor piping thermistor error

CH 03 Indoor main body / Remote controller unit communication error

CH 04(Optional) Water level float switch error

More than 45 minutesof heating operation

Within9min. 45sec.

ON OFF

ON ON

ON

ON OFF

OFFCOMPRESSOR

4-WAY VALVE

INDOOR FAN

-6°C ON

12°C OFF

The outdoorpiping Temp.

ON

More than 10 min.running of compressor

More than 45 minutesof heating operation

5sec.

HOT-

START

ON



– 18 –

Installation of Indoor, Outdoor Unit

1. Selection of the best location1) Indoor unit

Select location

Install the air conditioner in the location that satis-fies the following conditions.

• The place shall easily bear a load exceeding four

times the indoor unit’s weight.

• The place shall be able to inspect the unit as the

figure.

• The place where the unit shall be leveled.

• The place shall allow easy water drainage.(Suit-

able dimension “H” is necessary to get a slope to

drain as figure.)

• The place shall easily connect with the outdoor

unit.

• The place where the unit is not affected by anelectrical noise.

• The place where air circulation in the room will be

good .

• There should not be any heat source or steam

near the unit.

2) Outdoor unit • If an awning is built over the unit to prevent direct

sunlight or rain exposure, be careful that heat

radiation from the condenser is not restricted.

• There should not be any animals or plants which

could be affected by hot air discharged.• Ensure the spaces indicated by arrows from the

wall, ceiling, fence or other obstacles.

3) Piping length and the elevation

Indoor unit

Outdoor unitB

A

More than30cm

More than30cm

More than70cm

S u n r o o f

Fence orobstacles

Top view(unit: mm)

H

Front view

600600

Front

Inspection hole

(600X600)

Control box

1 0 0 0

36K BTU/h 5/8" 3/8" 7.5 15 7.5 12.5 50

42K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

48K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

60K BTU/h 3/4'' 3/8" 7.5 15 7.5 12.5 70

72K BTU/h 1'' 1/2" 7.5 25 7.5 20 70

Capacity

Gas Liquid

Elevation B(m)Piping LengthA(m)

* AdditionalRefrigerant

(g/m)

Pipe Size (Diam-eter: Ø)

inch

Standard StandardMax. Max.



– 20 –

3. Remote Controller Installation

• Although the room temperature sensor is in the indoor unit, the remote controller should be installed

in such places away from direct sunlight and high humidity.

Installation of the remote controller

• Select places that are not splashed with water.

• Select control position after receiving customer approval.

• The room temperature sensor is built in the indoor unit.• This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult

to see.(The standard height is 1.2 ~ 1.5m high)

Routing of the remote controller cord

• Keep the remote controller cord away from the refrigerant piping and the drain piping.

• To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power

cables (audio equipment, television set, etc.)

• If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water

droplets from running.

Remote control

box body

Cord clamp

(accessory)

Lever carefullythe box openusing a screw

driver, etc.

Front case

T h e l o w e r p a r t

Face of wall

Under plate

Screw (accessory)

• Fix the under plate on the wall

• Separate the under plate from Remote control box.

• Fix the cord clamps on the wall by ø 3 tappingscrews (accessory).

• Fix the remote control cord.

WIRED REMOTE CONTROL INSTALLATION

DISASSEMBLING

ELECTRICAL WIRING

Wire and make sure that teminal

numbers are matched on unit side andremote controller side.

The maximum length of the cord is 100m.If the length of the cord exceeds 50m,

use a wire size greater than 0.5mm2.

Remote controller

(Main board)

CN REMO



– 21 –

Remove the battery cover from the remote controller.

• Slide the cover according to the arrow direction.

Insert the two batteries.

• Be sure that the (+) and (-) directions are correct.

• Be sure that both batteries are new.

Re-attach the cover.

• Slide it back into position.

• Do not use rechargeable batteries,

such batteries differ from standard

dry cells in shape, dimensions, and

performance.

• Romove the batteries from the

remote controller if the air condi-

tioner is not going to be used for

some long time.

REMOTE CONTROL PREPARATION(OPTIONAL)

HOW TO MOUNT ONTO A WALL

HOW TO INSERT BATTERIESHOW TO INSERT BATTERIES



4. Connecting Cables between Indoor Unit and Outdoor Unit

– 22 –

1) Connecting cables to the Indoor Unit Connect the wires to the terminals on the control board individually according to theoutdoor unit connection.• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as

those of indoor unit respectively

36K/42K/48K/60K/72K Btu

2) Clamping of cables 1) Arrange 2 power cables on the control panel.2) First, fasten the steel clamp with a screw to the inner boss of control panel.3) For the cooling model, fix the other side of the clamp with a screw strongly.

For the heat pump model, put the 1.25mm2 cable(thinner cable) on the clamp and tighten itwith a plastic clamp to the other boss of the control panel.

4) In Australia, the length of power supply cord measured from the entry of the power supplycord to the middle of live pin on the power plug should be over 1.8m.

POWER INPUT

• Cooling & Heating type (380-415V3N~) (220-240V~)

Terminals on the indoor unit 1 2 4 53

Terminals on the outdoor unit 1 2 4 53

1(L) 2(N)

POWER INPUT

R S T N

The power cord connected to the outdoor unit should becomplied with the following specifications (Rubber

insulation, type H05RN-F approved by HAR or SAA).

If the supply cord is damaged, it must be replaced by a special cord or assembly availible from the manufacturer of its service agent.

The connecting cable connected to the indoor and outdoorunit should be complied with the following specifications

(Rubber insulation, type H05RN-F approved by HAR or SAA).

CAUTION

2 0 m m

G N / Y L

NORMAL

CROSS-SECTIONAL

AREA 1.25mm2 (36K/42K/48K/60K/72K)

2 0 m m

G N / Y L

NORMAL CROSS-SECTIONAL AREA

Capacity36K BTU/h42K BTU/h48K BTU/h

72K BTU/h

60K BTU/h

1 Phase

5.5mm2

8.5mm2

–

–

3 Phase

-

-

5.5mm2

5.5mm2

5.5mm2

Make sure that the screws of the terminal are free from looseness.

WARNING



– 23 –

Outdoor

Indoor

Control box cover(On which the Electric

Wiring Connection is put)

Main terminal board

Control terminal board

Cordclamper

Cover control

A

A view

Remotecontrol cord

Connectioncord betweenthe indoor unitand theoutdoor unit

Cord clamper

Mainpower source

Switch box

Circuit Breaker

Control terminal board

Control box

ELECTRICAL WIRINGPerform the electrical wiring work according to the electricalwiring connection.

• All wiring must comply with local requirements.• Select a power source that is capable of supply-

ing the current required by the air conditioner.• Use a recognized circuit breaker between the

power source and the unit. A disconnectiondevice to adequately disconnect all supply linesmust be fitted.

• Capacity of circuit breaker

INDOOR UNIT

• Remove the control box cover for elec-trical connection between the indoorand outdoor unit.

• Use the cord clamper to fix the cord.

WIRING CONNECTION

OUTDOOR UNIT

• Remove the control cover for wiring con-nection.

• Use the cord clamper to fix the cord.• Earthing work

Connect the cable of diameter 1.6mm2

or more to the earthing terminal provid-ed in the control box and do earthing.

Please check !!

Capacity 1 Phase 3 Phase

36K BTU/h 35A -

42K BTU/h 40A -

48K BTU/h - 25A

60K BTU/h - 25A

72K BTU/h - 25A



1) Cut the pipes and the cable.

s Use the accessory piping kit or the pipes purchasedlocally.s Measure the distance between the indoor and the out-

door unit.s Cut the pipes a little longer than measured distance.s Cut the cable 1.5m longer than the pipe length.

2) Burrs removal s Completely remove all burrs from the cut cross section

of pipe/tube.s Put the end of the copper tube/pipe to downward direc-

tion as you remove burrs in order to avoid to let burrs

drop in the tubing.

3) Putting nut on s Remove flare nuts attached to indoor and outdoor units,

than put them on pipe/tube having completed burrremoval.(Not possible to put them on after flaring work)

4) Flaring work s Carry out flaring work using flaring tool as shown below.

Firmly hold copper tube in a bar(or die) as indicateddimension in the table above.

5) Check s Compare the flared work with figure below.s If flare is noted to be defective, cut off the flared section

and do flaring work again.

– 24 –

Coppertube 90° Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

Bar

Copper pipe

Clamp handleRed arrow mark

Cone

Yoke

Handle

Bar"A"

Inclined

Inside is shining without scratches.

Smooth all round

Even lengthall round

Surfacedamaged

Cracked Uneventhickness

= Improper flaring =

• Preparation of Piping

5. Connecting Pipes to the Indoor Unit

Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.

Outside Diameter " A "

Gas Liquid Gas Liquid

36K BTU/h 5/8" 3/8" 0.8~1.0 0.5~0.8

42K BTU/h 3/4" 3/8" 1.0~1.3 0.5~0.8

48K BTU/h 3/4" 3/8" 1.0~1.3 0.5~0.8

60K BTU/h 3/4" 3/8" 1.0~1.3 0.5~0.8

72K BTU/h 1" 1/2" - -

Capacity



– 25 –

1. Form the piping according to its routing. Avoid bend-

ing and bending back the same piping point more

than three times. (This will result in hardening the

pipe.)

2. After deforming the piping, align centers of the union

fitting of the indoor unit and the piping, and tightenthem firmly with wrenches.

3. Connect pipe to the service valve or ball valve which

is located below the outdoor unit.

4. After completing the piping connection, be sure to

check if there is gas leakage in indoor and outdoor

connection.

After completing the piping connection, execute vacuum

drying for the connecting piping and the indoor unit.The vacuum drying must be carried out using the ser-

vice ports of both the liquid and gas side valves.

Use two wrenches and tighten with regular torque.

Outdoorunit

Liquid side

Flare connection

Flare connection

Gas side

Indoor

unit

UnionFlare nut fastening torque

Ø6.35mm 1.8kg.m

Ø9.52mm 4.0kg.m

Ø12.7mm 5.5kg.m

Ø15.88mm 6.6kg.m

Ø19.05mm 6.6kg.m

Model Liquid side piping Gas side piping

36K Btu/h 3/8" 5/8"

42K Btu/h 3/8" 3/4"

48K Btu/h 3/8" 3/4"

60K Btu/h 3/8" 3/4"

72K Btu/h 1/2" 1"

Piping Connection

Vacuum drying

CAUTION



– 26 –

Ceiling

CAUTION

1 ~ 3 m m

Drainage hole

Drainage hole

U-Trap

BC

A ≥ 70mmB ≥ 2C

C≥

2 x SPSP = External Pressure(mmAq)

Ex) External Pressure= 10mmAqA ≥ 70mmB ≥ 40mmC ≥ 20mm

A

Make sure to be closed.

Unit

Drainage pipe(Local supply)

Thermal insulator

(Local supply)

Drainage hole

CAUTION FOR GRADIENT OF

UNIT AND DRAIN PIPING

Lay the drain hose with a downwareinclination so water will drain out.

700mm

(HP/CP model only)

Front of view

• Always lay the drain with downward inclination(1/50 to 1/100).Prevent any upward flow or reverse flow in any part.

• 5mm or thicker formed thermal insulator shallalways be provided for the drain pipe.

1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.

2. Minimum thickness of the insulation for the connecting pipe shall be 5mm.

• The unit must be horizontal or declined to the drain hose connected when finished installation.

CORRECT

INCORRECT

• Upward routing notallowed

Applied U-Trap Dimension

• Install the P-Trap (or U-Trap) to preventa water leakage caused by the blockingof intake air filter.

INCORRECTCORRECT



– 27 –

• Drill the piping hole with 70mm dia, holecore drill.

• Piping hole should be slightly slant to theoutdoor side.

INSULATION, OTHERS Insulate the joint and tubes completely.

All thermal insulation must comply with local requirement.

INDOOR UNIT

REFRIGERANT PIPE • Insulate and tape both the gas piping and liquid piping.

THERMAL INSULATION

5~7mm

Indoor OutdoorWALL

Make sure that there is no clearance here.

Overlap with thermal

insulator for piping.

Thermal insulator for refrigerant pipe(Local supply) Thermal insulator for

piping(Local supply)

Hose crip for thermal insulator(Local supply)

Union for liquid pipe

OrificeRefrigerant pipe and thermalinsulator(Local supply)

Union for gas pipe

Thermal insulator for refrigerant pipe(Local supply)

Hose crip for thermal insulator(Local supply)

Connecting cable

Liquid pipe

Thermal insulator

Gas pipe

Tape



1. Wrap the connecting portion of indoor unit withthe Insulation material and secure it with twoPlastic Bands. (for the right pipings)• If you want to connect an additional drain hose,

the end of the drain-outlet should keep distancefrom the ground. (Do not dip it into water, and fixit on the wall to avoid swinging in the wind.)

2. Tape the Pipings, drain hose and ConnectingCable from bottom to top.

3. Form the pipings gathered by taping along theexterior wall and fix it onto the wall by saddleor equivalent.

– 28 –

1) PRECAUTIONS IN TEST RUN • The initial power supply must provide at least 90% of the rated voltage.

Otherwise, the air conditioner should not be operated.For test run, carry out the cooling operation firstly even during heating season. If heating operationis carried out firstly, it leads to the trouble of compressor. Then attention must be paid.Carry out the test run more than 5 minutes without fail.(Test run will be cancelled 18 minutes later automatically)

• The test run is started by pressing the room temperature checking button and down timer button for 3 sec-onds at the same time.

• To cancel the test run, press any button.

• After completing work, be sure to measure and record trial run properties, and store measured data, etc.• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind

velocity, wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure, pipingtemperature, compressive pressure.

• As to the structure and appearance, check following items.

CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE

Caution

Is the circulation of air adequate?Is the draining smooth?Is the heat insulation complete(refrigerant and drain piping)?

Is there any leakage of refrigerant?

Is the remote controller switch operated?Is there any faulty wiring?Are not terminal screws loosened?

M4...118N.cm12kgf.cm M5...196N.cm20kgf.cmM6...245N.cm25kgf.cm M8...588N.cm60kgf.cm

Test running

Trap is required to prevent water from enteringinto electrical parts.

Seal a small openingaround the pipingswith gum type sealer.

Drain hose

Taping

Pipings

Connectingcable

Power supplycord

In case of the Outdoor unit being installedbelow position of the Indoor unit.

FORM THE PIPINGS



– 29 –

CAUTION

After the confirmation of the above conditions, prepare the wiring as follows:

1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring,

be guided by the circuit diagram pasted on the inside of control box cover.

2) Provide a circuit breaker switch between power source and the unit.

3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from

vibrations to which the unit is subjected during the course of transportation. Check them and

make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the

wires.)

4) Specification of power source

5) Confirm that electrical capacity is sufficient.

6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked

on the name plate.

7) Confirm that the cable thickness is as specified in the power sources specification.

(Particularly note the relation between cable length and thickness.)

8) Never fail to equip a leakage breaker where it is wet or moist.9) The following troubles would be caused by voltage drop-down.

• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the

normal function of a overload protection device.

• Proper starting power is not given to the compressor.

2) Connection of power supply 1. Connect the power supply cord to the independent power supply.

• Circuit breaker is required.

2. Operate the unit for fifteen minutes or more.

3) Evaluation of the performance 1. Measure the temperature of the intake and discharge air.

2. Ensure the difference between the intake temperature and the discharge one is more than 8°C (Cooling) orreversely (Heating).



– 30 –

Optional Operation1) Two Thermistor System

(1) Open the rear cover of the wired remote-controller to set the mode.

(2) Select one of three selectable modes as follows.

• Position 1:

The room temperature is controlled by the thermistor of the main body.• Position 2:

The room themperature is controlled by the thermistor of the wired remote-controller, control the

temperature according to the position of wired remote-controller.

• Position 3:

The room temperature is controlled by lower temperature between the temperature of main body and of

remote-controller sensor.

(3) Move the slide switch to set position.

(4) Close the rear cover and check if it works normally.

TH

R14HSW TH

REMOMAIN2TH OP7

R18HR17H

OP6

LOSTAND

S W H IG H

HI R03S

C 0 7 0

R 0 4 S

R 0 2 S

R01S

OP3 O P 2 O P1R19H

R11H

R 13H R 12H O P5 R 16 H O P 4

R15H

CO1H

REMO

Room Temp. sensor

2TH

MAIN

Position 2

Position 1

Position 3

Slide switch for 2 Thermistor

• Select the position after counselling with a customer.

• In case of cooling mode, room temperature is controlled by the main body sensor.

• To control the room temperature by a wired remote controller, install controller(room temp. sensor) to sense

the temperature more accurately.

• Maunfactured in the position 1.

CAUTION



– 31 –

2) Group Control(Optional Wiring)

• You can use a group control operation after connecting the brown and yellow wire of each air-conditioner.

• Remove the resistor "OP 7" in remote controller.

• It operates maximum 16 Units by only one Wired Remote Controller,

and each Unit starts sequentially to prevent overcurrent.

Wiring design

Features

• Use Only One Wired Remote Controller with several air conditioners(max. 16 Units)

• Random starting to prevent overcurrent.

Operation unit

ZONE 1 2 3 4

HumidifyJETAUTO

AUTO SWING OPERATION FAN SPEED

Program set

SUB FUNCTIONSET TEMPRoomTemp

HIMED

LO

HeaterDefrostFilter

Preheat

Out door

Time

TimerOn

Setno.Time

Off0 1 0 3 0 5 0 7 0 9 1 1 1 3 1 5 1 7 1 9 2 1 2 3

Indoor Unit 1

Terminal(Local Supply)Block



Main PCB#1

Main PCB#2

Main PCB#16

Wired Remote Controller

Slide Switch OP7

RemoteController

PCB

Indoor Unit 2

Main PCB

Indoor Unit 16

ConnectorRED(12V)

YL(SIGNAL)

BR(GND)

RED(12V)

YL(SIGNAL)

BR(GND)

YL(SIGNAL)

BR(GND)

YL(SIGNAL)

BR(GND)YL(SIGNAL)

BR(GND)

YL(SIGNAL)

BR(GND)

Connecting Cable(Local Supply)

Connector Connector

....

....

• Be careful not to exchange the color of wires.• The maximum length of connecting wire should be below 200m(25Ω) on connecting each units.• Use a wire more than 0.5mm2

CAUTION



Cycle

1. Installation (Connecting the piping between indoor and outdoor unit)

–32–

• Installation

(1) Connect the piping between the indoor and

outdoor unit firmly.

– Incorrect connection may cause the leakage and

incomplete vacuuming.

(2) Attach the charging hose (manifold gage) to the

service port.

– Charging hose is necessary to check the pressure

and to inject R22 for leakage test.

– The valve of charging hose must be closed before

being connected.

(3) Inject the 100~300g R22 through the charging hose

opening the valve.

(4) Check the joint part using a gas detector or soapy

water for leakage.

– On checking, the service valve of main service port

must be closed, this test is only for checking whether

pipe connection is ok or not.

(5) If there is no leakage, discharge R22 in piping

completely into tank for retrieving.

– Complete discharge is needed for vacuuming.

– If leakage is found, please fasten the joint more

tightly.

(6) After closing the valve of charging hose,

disconnect the tank and connect the vacuum pump

to charging hose and open the valve again for

vacuuming.

(7) Turn on the vacuum pump until the pressure drops

below 0kg/cm2.

(8) After vacuuming, disconnect the vacuum pump and

open the spindle of service port (liquid-side)

slightly for 30 sec and then open the spindle of

(gas side) with hexagonal wrench.

(9) Open the liquid side completely first and then the

gas side fully in order.

Lo

Purge the air

Outdoor unit

Indoor unit Liquid side

Gas side

Gas cylinder

R22



2. Disconnection (on moving)

• Disconnection

(1) Attach the charging hose (manifold gage) to

the service port.

– Connect the manifold gage once to the service

port not stopping. Stopping in the middle of

process may cause the leakage.

(2) Purge the air in hose into special device such

as retrieving tank opening the valve of

charging- hose (gas side) slightly and then

close it tightly.

(3) Operate the air conditioner for 10~15 min until

cycle is stabilized.

(4) Close the spindle of service port (liquid side-

high pressure) and wait till pressure of gas

side (low pressure) drops below 0kgf/cm2.

(5) After the needle of gage indicates below

0 kgf/cm2, close the valve of gas side quickly

and turn off the power.

(6) Disconnect the piping between indoor and

outdoor unit and then put on service cap to

the service port.

Lo

Outdoor unit


Gas side

Retrieving Tank

– 33 –



3. Gas Charging

(After Evacuation)

• Procedure

(1) Connect the charge hose to the charging

cylinder.

– Connect the charge hose which you dis-

connected from the vacuum pump to the valveat the bottom of the cylinder.

– If you are using a gas cylinder, also use a scale

and reverse the cylinder so that the system can

be charged in liquid state.

(2) Purge the air from the charge hose.

– Open the valve at the bottom of the cylinder

and press the check valve on the charge set to

purge the air. (Be careful of the liquid

refrigerant). The procedure is the same if

using a gas cylinder.

(3) Open the valve (Lo side on the charge set andcharge the system with liquid refrigerant.

– If the system can not be charged with the

specified amount of refrigerant, it can be

charged with a little at a time (approximately

150g each time) while operating the air

conditioner in the cooling cycle; however, one

time is not sufficient, wait approximately 1

minute and then repeat the procedure.

(4) Immediately disconnect the charge hose from

the 3-way valve’s service port.

– Stopping partway will allow the gas to be

discharged.

– If the system has been charged with liquid

refrigerant while operating the air conditioner,

turn off the air conditioner before disconnecting

the hose.

(5) Mount the valve stem nuts and the service

port nut.

– Use torque wrench to tighten the service port

nut to a torque of 1.8 kg.m.

– Be sure to check for gas leakage.

\

This is different from previous procedures.

Because you are charging with liquid refrigerant

from the gas side, absolutely do not attempt to

charge with larger amounts of liquid refrigerantwhile operating the air conditioner.

Lo

Chargingcylinder

Outdoor unit


Gas side

CLOSE

Open2-Wayvalve

3-Wayvalve

OPEN

Open

Check valve

(1)

– 34 –



Cycle Troubleshooting Guide

Trouble analysis

1. Check temperature difference between intake and discharge air and operating current.

Temp. Difference

Temp. difference : approx. 0°CCurrent : less than 80% of

rated current

Temp. difference : approx. 8°CCurrent : less than 80% of

rated current

Temp. difference : less than 8°C

Current : over the ratedcurrent

Temp. difference : over 8°C

Operating Current

All amount of refrigerant leaked out

Check refrigeration cycle

Refrigerant leakege

Clog of refrigeration cycle

Defective compressor

Excessive amount of refrigerant

Normal

Notice :

Temperature difference between intake and discharge air depends on room air humidity. When the room air

humidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lower

temperature difference is larger.

2. Check temperature and pressure of refrigeration cycle.

Notice :

1. The suction pressure is usually 4.5~6.0 kg/cm2G at normal condition.

2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with

putty.

Suction pressure Temperature(Compared with (Compared with Cause of Trouble Description

the normal value) the normal value)

Defective compressor Current is lowDefective 4-way reverse valve

Excessive amount of High pressure does not quicklyNormal refrigerant rise at the beginning of

operation

Insufficient amount of Current is lowLower Higher refrigerant (Leakage)

Clogging Current is low

High

Higher

– 35 –



Electronic Parts Troubleshooting Guide

: The unit does not operate.Possible Trouble 1

– 36 –

YES

NO

YES

Is the input voltageof transformer AC230V?

Check the FUSEand the wiring diagram.

Is the PIN 49,58 ofMICOM. DC5V?

Exchange MICOM.

YES

NO Check the main P.C.Bpattern.

NO

YES

Is the output voltageof IC03D DC5V?

NOExchange IC03D.

Is the input voltageof IC03D about AC12V?

Check the5V P.C.B pattern.



Possible Trouble 2 : The indoor fan does not operate.

– 37 –

NO

NO

Is it the HOTSTART mode?

Is IC01M operatednormally?

Check the fan motorand connector.(CN-MOTOR)

YES

Is the each Relayany problem?

YES

NO

YES

It is normal operation.

Exchange IC01M.

Exchange Relay.

YES

YES

NO

YES

Is it Heating Mode?

Does the temperatureset all right?

Change IC01M.

NO

NO

Adjust operation mode.

Adjust set temperature.

Is IC01M operatednormally?

YES

Check the connector.(CN-OUT)

Check RY-4Way.NO

Is 4way-valve operated?

Possible Trouble 3 : Ineffective Heating



– 38 –

Possible Trouble 4 : Wired remote controller does not operate.

NO

YES

YES

YES

Is the LCD operatednormally?

Is the terminal of wiredRemocon T2 DC12V?

Is the pin 39, 40 ofMicom DC 5V?

Change the wired Remocon.

Check the wired RemoconPCB and DC 12V pattern.

NO

NO

Check the parts ofcommunication.

Connector CN-Remo, andterminals of wiredRemocon exactly.



– 39 –

Electronic control device

s MAIN P.C.B ASM



–40–

Exploded View and Replacement Parts List

1. Indoor Unit

Model:LBNK3660BL 237203

330870W3001-1

W4811

137211-1

137211-2

237204-4

268714

249941-2

249941-1

237201

237204-1

237204-2

W3001-2

237200

267110-1

354212

237204-3

W3300

359012

W6640

346810

349480



–41–

354212EVAPORATOR ASSEMBLY,FINAL 5421A90024A

REVAPORATOR ASSY 75094001

359012FAN ASSEMBLY,BLOWER 5901A20022A

RBLOWER ASSY DDC241T181-204

237201PANEL,BASE 3720A20210A

RPANEL BASE XP0023-055

137211-1PANEL ASSEMBLY,FRONT(INDOOR) 3721A20130A

RPANEL ACCESS XP0023-056

237204-1PANEL,SIDE 3720A20211A

RPANEL CORNER BLH XP0023-059

237204-2PANEL,SIDE 3720A20211B

R

PANEL CORNER BRH XP0023-060W3001-1

ANGLE ASSEMBLY 3001A20003AR

ANGLE SPIGOT COIL XP0023-061

237203PANEL,UPPER 3720A20208A

RPANEL TOP XP0023-062

W3001-2ANGLE ASSEMBLY 3001A20003B

RANGLE SPIGOT BLOWER XP0023-063

330870DRAIN PAN ASSEMBLY 3087A20015A

RDRAIN TRAY ASSY XP0023-064

237204-3PANEL,SIDE 3720A20211C

RPANEL CORNER FLH XP0023-100

237204-4PANEL,SIDE 3720A20211D

R

PANEL CORNER FRH XP0023-102249941-1

CONTROL BOX,INDOOR 4994A20068AR

CONTROL BOX XP0023-105

249941-2CONTROL BOX,INDOOR 4994A20068B

RCONTROL BOX COVER XP0023-106

W4811BRACKET ASSEMBLY 4811A20026A

RBRACKET MOUNTING XP0023-107

237200PANEL,CONTROL 3720A20209A

RPANEL ACCESS CNTRL XP0023-099

W6640TERMINAL BLOCK 6640W3A009C

RTERMINAL STRIP LNX14613

W3300PLATE 3300A20029A

R

PLATE COVER XP0023-101137211-2

PANEL ASSEMBLY,FRONT(INDOOR) 3721A20130BR

PANEL BLOWER MTG. XP0023-119

346810MOTOR ASSEMBLY,INDOOR 4681A20096A

RMOTOR HF2J4701K

267110-1REMOTE CONTROLLER ASSEMBLY 6711A10002W

RCONTROL KIT (FOC) K0023-25

268714PWB(PCB) ASSEMBLY,MAIN 6871A10071J

R– –

349480ORIFICE

RPISTON 383103-062(2ND GEN) MR1507-016

LOCATION NO. DESCRIPTION Part No. REMARKS

Parts List

• Model: LBNK3660BL



–43–

354212EVAPORATOR ASSEMBLY,FINAL 5421A20140A 5421A20141A 5421A20142A 5421A20143A

REVAPORATOR ASSY 75095001 75101001 75102001 75093001

359012FAN ASSEMBLY,BLOWER 5901A20023A 5901A20024A 5901A20025A 5901A20026A

RBLOWER ASSY DXG203-203-401 DXG203-203-441 DXC241T181-051 DXC241T241-045

237201PANEL,BASE 3720A20210A 3720A20210A 3720A20215A 3720A20219A

RPANEL BASE XP0023-055 XP0023-055 XP0023-083 XP0023-076

137211-1PANEL ASSEMBLY,FRONT(INDOOR) 3721A20130A 3721A20130A 3721A20131A 3721A20131A

RPANEL ACCESS XP0023-056 XP0023-056 XP0023-075 XP0023-075

237204-1PANEL,SIDE 3720A20211A 3720A20211A 3720A20216A 3720A20220A

R

PANEL CORNER BLH XP0023-059 XP0023-059 XP0023-085 XP0023-079237204-2

PANEL,SIDE 3720A20211B 3720A20211B 3720A20216B 3720A20220BR

PANEL CORNER BRH XP0023-060 XP0023-060 XP0023-086 XP0023-078

W3001-1ANGLE ASSEMBLY 3001A20003A 3001A20003A 3001A20004A 3001A20005A

RANGLE SPIGOT COIL XP0023-061 XP0023-061 XP0023-088 XP0023-081

237203PANEL,UPPER 3720A20208A 3720A20208A 3720A20217A 3720A20221A

RPANEL TOP XP0023-062 XP0023-062 XP0023-084 XP0023-077

W3001-2ANGLE ASSEMBLY 3001A20003B 3001A20003B 3001A20004B 3001A20005B

RANGLE SPIGOT BLOWER XP0023-063 XP0023-063 XP0023-073 XP0023-080

330870DRAIN PAN ASSEMBLY 3087A20015A 3087A20015A 3087A20017A 3087A20018A

RDRAIN TRAY ASSY XP0023-064 XP0023-064 XP0023-087 XP0023-082

237204-3PANEL,SIDE 3720A20211C 3720A20211C 3720A20216C 3720A20220C

RPANEL CORNER FLH XP0023-100 XP0023-100 XP0023-096 XP0023-098

237204-4PANEL,SIDE 3720A20211D 3720A20211D 3720A20216D 3720A20220D

RPANEL CORNER FRH XP0023-102 XP0023-102 XP0023-090 XP0023-067

249941-1CONTROL BOX,INDOOR 4994A20068A 4994A20068A 4994A20068A 3720A20220D

RCONTROL BOX XP0023-105 XP0023-105 XP0023-105 XP0023-105

249941-2CONTROL BOX,INDOOR 4994A20068B 4994A20068B 4994A20068B 4994A20068B

RCONTROL BOX COVER XP0023-106 XP0023-106 XP0023-106 XP0023-106

W4811BRACKET ASSEMBLY 4811A20026A 4811A20026A 4811A20026A 4811A20026A

RBRACKET MOUNTING XP0023-107 XP0023-107 XP0023-107 XP0023-107

237200PANEL,CONTROL 3720A20209A 3720A20209A 3720A20218A 3720A20218A

RPANEL ACCESS CNTRL XP0023-099 XP0023-099 XP0023-095 XP0023-095

W6640TERMINAL BLOCK 6640W3A009C 6640W3A009C 6640W3A009C 6640W3A009C

RTERMINAL STRIP LNX14613 LNX14613 LNX14613 LNX14613

W3300PLATE 3300A20029A 3300A20029A 3300A20030A –

RPLATE COVER XP0023-101 XP0023-101 XP0023-097 –

267110-1REMOTE CONTROLLER ASSEMBLY 6711A10002W 6711A10002W 6711A10002W 6711A10002W

RCONTROL KIT (FOC) K0023-25 K0023-25 K0023-25 K0023-25

268714PWB(PCB) ASSEMBLY,MAIN 6871A10071J 6871A10071J 6871A10071J 6871A10071J

R– – – – –

ORIFICE 4948A20020A 4948A20021A 4948A20021A 4948A20022A

349480PISTON 383103-074(2ND GEN) MR1507-008

RPISTON 383103-086(2ND GEN) MR1507-014 MR1507-014

PISTON 383103-098(2ND GEN) MR1507-006

LBNK4260BL LBNK4880BL LBNL6080BL LBNM7280BL

LOCATION NO. DESCRIPTION

Part No.

REMARKS

Parts List

• Model: LBNK4260BL/LBNK4880BL/LBNL6080BL/LBNM7280BL



–44–

2. Outdoor Unit

• Model: LBUK3660BL

4 3 7 2 1 0

4 3 5 3 0 1

4 3 5 5 1 2

5 4 6 8 1 0

5 5 2 2 0 1

5 5 4 0 3 1

2 6 3 2

3 0

3 4 9 6 0 0

4 3 5 5 1 1

6 4 9 9 5 0

5 5 4

1 6 0

5 5 2 2 0 3 - 1

5 5 2 2 0 3 - 2

4 3 5 3 0 0

1 3 7 2 1 3

4 3 0 4 1 1

C S R

5 5 2 2 0 2

5 6 6 0 0 0

5 6 1 4 1 0

W 0 C Z Z - 2 2

6 8 7 1 1

W 6 6 4 0 - 2

W 6 9 2 0

W 6 6 4 0 - 1

5 6 6 0 0 1 - 2

W 0 C Z Z - 3

5 5 9 0 1 0

3 4 9 4 8 0

6 5 8 7 4 0

6 6 8 7 1

3

W 0 C Z Z - 1

5 6 6 0 0 1 - 1



– 45 –

137213 PANEL ASSY, SIDE 1A00202F R

263230 THERMISTOR ASSY 3Q35015H R

268711 PWB(PCB) ASSY, DEICER 6871A20015T R

349480 ORIFICE 4948AP2527A R

349600 MOUNT, MOTOR 1A00206B R

430411 BASE ASSY, WELD 3041A30003N R

435300 GRILLE, REAR 1A00208H R

435301 GRILLE, DISCHARGE 3530A20007B R

435511 COVER ASSY, CONTROL 3551A30080A R

435512 COVER ASSY, TOP 3H03266H R

437210 PANEL ASSY, FRONT 1A00197C R

546810 MOTOR ASSY, OUTDOOR 4681A20008P R

552201 VALVE, CHECK 3A01020H R

552202 VALVE, REVERSING 3A02080A R

552203-1 VALVE, SERVICE 2A00392E R

552203-2 VALVE, SERVICE 2A00393U R

554031 CONDENSER ASSY, BENT 5403A20047H R

554160 COMPRESSOR ASSY, FINAL 2520UFJP2AA R

559010 FAN ASSY, PROPELLER 1A00195B R

561410 COIL ASSY, REVERSING VALVE 3A02028Y R566000 SWITCH, PRESSURE 3A01100A R

649950 CONTROL BOX ASSY, OUTDOOR 4995A20230J R

W0CZZ-1 CAPACITOR, DRAWING 0CZZAP3478E R

W0CZZ-2 CAPACITOR, DRAWING 0CZZA20001D R

268713 PCB, SOFT START 6871A20015T R

658740 REACTOR 2H02205D R

W6920 RELAY 3A00261C R

668713 PWB(PCB) ASSEMBLY, SUB 6871A20051C R

566001-1 SWITCH, MAGNET 6600A20005A R

566001-2 SWITCH, MAGNET 2A00771D R

W6640-1 TERMINAL BLOCK 4G00103A RW6640-2 TERMINAL BLOCK 4G00103C R

W0CZZ-3 CAPACITOR, DRAWING 2A00986D R

LOCATION NO DESCRIPTION Part No. REMARKS

Parts List• Model: LBUK3660BL



– 46 –

2. Outdoor Unit

• Model: LBUK4260BL

4 3 5 5 1 2

5 4 6 8 1 0

5 5 9 0 1 0

4 3 0 4 1 0

1 3 5 3 0 1

4 3 7 2 1 0

2 3 7 2 0 4

4 3 5 5 1 1

5 5 4 1 6 0

5 5 4 1 6 0

5 4 9 6 1 0

5 5 4 0 3 1

6 4 9 9 5 0

5 5 2 2 0 1

4 3 7 2 1 2

5 5 2 2 0 3 - 2

5 5 2 2 0 3 - 1

W 6 6 4 0 - 5

6 6 8 7 1 3

2 6 8 7 1 1

W 6 6 4 0 - 5

W 6 6 4 0 - 4

W 6 6 4 0 - 1

W 6 6 4 0 - 3

W 6 9 2 0

2 6 9 1 4 0

W 0 C Z Z - 1

W 0 C Z Z - 4

6 6 9 2 0 0 5 6

1 4 1 0

5 5 2 2 0 2



– 47 –

135301 GRILLE, DISCHARGE 3530AP1225D R

237204 PANEL, SIDE 3720AP1215B R

430410 BASE ASSY, WELD(OUTDOOR) 3041AP2569J R

435511 COVER ASSY, CONTROL(OUTDOOR) 3A01293X R

435512 COVER ASSY, TOP(OUTDOOR) 3550AP1213B R

437210 PANEL ASSY, FRONT SUB 3720AP1212B R

437212 PANEL ASSY, REAR 3720AP1202N R

546810 MOTOP ASSY, OUTDOOR 4681A20013X R

549610 MOUNT, MOTOR 4960A10004A R

552203-1 VALVE, SERVICE 2A00499A R

552203-2 VALVE, SERVICE 2A00393P R

554031 CONDENSER ASSY, BENT 5403A20044P R

554160 COMPRESSOR ASSY, FINAL 5417A90002A R

559010 FAN ASSY, PROPELLER 1A00195B R

649950 CONTROL BOX ASSY, OUTDOOR 4995A20047R R


669200 RELAY 6920AP3400A R

W6640-1 TERMINAL BLOCK 4G00103A R

W6640-3 TERMINAL BLOCKE 6640A30003A R

668713 PWB(PCB) ASSY, SUB 6871A20052B R

W0CZZ-1 CAPACITOR, DRAWING 0CZZAP3478F R

W0CZZ-4 CAPACITOR, DRAWING 6120AR2194P R

W6640-4 TERMINAL BLOCK 3H00390B R

W6640-5 TERMINAL BLOCK 3H00390A R

269140 TIMER 3A02380B R

268711 PWB(PCB) ASSY, DEICER 6871A20015T R

552202 VALVE, REVERSING 3A02027A R

552201 VALVE, CHECK 3A01020D R

561410 COIL ASSY, REVERSING VALVE 3A02028Y R


Parts List• Model: LBUK4260BL



– 48 –

C

S R

4 3 5 5 1 2

5 4 6 8 1 0

6 4 9 9 5 0

5 6 6 0 0 1 - 3

W 6 9 2 0

4 3 0 4 1 0

4 3 7 2 1 2

5 5 2 2 0 3 - 1

5 5 2 2 0

3 - 2

5 5 2 2 0 1

4 3 5 3 0 1

5 5 9 0 1 0

1 3 7 2 1 3

5 6 6 0 0 0

5 6 1 4 1 0

5 5 4 0 3 0 - 1

5 5 4 0 3 0 - 2

5 5 2 2 0 2

4 3

5 5 1 1

4 3 7 2 1 0

5 5 4 1 6 0

W 6 6 4 0 - 1

6

6 8 7 1 3

W 6 6 4 0 - 6

W 0 C Z Z - 3

2 6 8 7 1 1

2. Outdoor Unit

• Model: LBUK4880BL/LBUL6080BL



435301 GRILLE ASSY, DISCHARGE(OUTDOOR) 3530AP1225D 3530AP1225D R

430410 BASE ASSY, WELD(OUTDOOR) 3041AP2569B 3041AP2569B R

435511 COVER ASSY, CONTROL(OUTDOOR) 3A01293X 3A01293X R

435512 COVER ASSY, TOP(OUTDOOR) 3550AP1213B 3550AP1213B R

437210 PANEL ASSY, FRONT(OUTDOOR) 3720AP1212B 3720AP1212B R

437212 PANEL ASSY, REAR 3720AP1202C 3720AP1202C R

546810 MOTOR ASSY, OUTDOOR 4681A20008P 4681A20008P R

552202 REVERSING VALVE 3A02080A 3A02080A R

552203-1 VALVE, SERVICE 2A00393Q 2A00393Q R

552203-2 VALVE, SERVICE 2A00499C 2A00499C R

554030-1 CONDENSER ASSY, BENDING 5403A20079M 5403A20079M R

554030-2 CONDENSER ASSY, BENDING 5403A20079N 5403A20079N R

` 554160 COMPRESSOR 2520UNDY2AA 5416AP2667F R

559010 FAN ASSY, PROPELLER 1A00195B 1A00195B R

561410 COIL ASSY, REVERSING VALVE 3A02028B 3A02028B R

649950 CONTROL BOX ASSY, OUTDOOR 4995A10010N 4995A10010Z R

W0CZZ-3 CAPACITOR, DRAWING 2A00986D 2A00986D R

268711 PWB ASSY, DEICE 6871A20015N 6871A20015N R

566000 PRESSURE SWITCH 3A01100A 3A01100A R

137213 PANEL, SIDE 3720AP1215B 3720AP1215B R

566001-3 SWITCH, MAGNET 2A01031L 2A01031L R

W6920 RELAY 3A00261C 3A00261C R

668713 PWB(PCB) ASSEMBLY, SUB 6871A30015D 6871A30015D R

W6640-1 TERMINAL BLOCK 4G00103A 4G00103A R

W6640-6 TERMINAL BLOCK 3A00493A 3A00493A R

552201 VALVE, CHECK 3A01020D 3A01020D R

566000 SWITCH, PRESSURE 3A01100A 3A01100A R

– 49 –

LBUK4880BL LBUL6080BL

LOCATION NO DESCRIPTIONPart No.

REMARKS

Parts List• Model: LBUK4880BL/LBUL6080BL



– 50 –

2. Outdoor Unit

• Model: LBUM7280BL

C S R

3 4 9 4 9 0

W 3 5 4 6

5 4 9 6 1 0

4 3

5 3 0 1

4 3 5 5 1 1

1 4 5 2 0 0

4 3 0 4 1 1

W 0 C Z Z - 5

W 6 6 4 0 - 1

W 6 6 4 0 - 6

W 6 6 4 0 - 5

W 6 9 2 0

5 5 2 1 1 5 - 4

5 5 9 0 1 0

3 4 6 8 1 1 - 1

W 4 9 8 1 0 - 3

5 5 2 1 1 5 - 2

5 5 2 1 1 5 - 3

5 5 2 1 1 5 - 1

W 4 9 8 1 0 - 1

W 4 9 8 1 0 - 2

5 5 2 2 0 3 - 1

W 4 9 8 1 0 - 5

4 3 7 2 1 0 - 2

2 3 7 2 0 0 - 1

2 3 7 2 0 0 - 2

W 4 9 8 1 0 - 6

5 5 2 2 0 3 - 2

5 6 6 0 0 0 - 2

5 5 2 1 1 6

5 6 6 0 0 0 - 1

W 4 8 1 0

5 5 2 2 0 1

5 6 1 4 1 0

6 4 9 9

5 0

5 6 6 0 0 1 - 4

2 6 8 7 1 1

6 6 8 7 1 3

5 4 8 4 9 0

5 5 4 1 6 0

4 3 7 2 1 0 - 1

5 5 4 0 3 1 - 1

5 5 4 0 3 1 - 3

5 5 4 0 3 1 - 4

W 4 9 8

1 0 - 4

5 5 4 0 3 1 - 2



– 51 –

430411 BASE ASSY 3041AP2606V R

554160 COMPRESSOR 5416AP2667F R

548490 ACCUMULATOR 3A02139U R

649950 CONTROL BOX ASSY 4995A20002E R

W6640-6 TERMINAL BLOCK 3A00493A R

W6640-1 TERMINAL BLOCK 4G00103A R

566001-4 SWITCH, MAGIVET 2A01031K R

W0CZZ-5 CAPACITOR, DRAWING 2H00841J R


W6640-5 TERMINAL BLOCK 3H00390A R

268711 PWB(PCB)ASSY, DEICER 6871A20015T R

668713 PWB(PCB)ASSEMBLY, SUB 6871A30015D R

554031-1 CONDENSER ASSY 5403A20030V R

554031-2 CONDENSER ASSY 5403A20030W R

554031-3 CONDENSER ASSY 5403A20030X R

554031-4 CONDENSER ASSY 5403A20030Y R

145200 LINK SHEET 4520AP4095A R

W49810-1 BRACKET COND 4810AP3697A R

552115-1 TUBE ASSY, (MANIFOLD IN) 5211A30269A R

552115-2 TUBE ASSY, (MANIFOLD IN) 5211A30269B R

552115-3 TUBE ASSY, (MANIFOLD OUT) 5211A20503Q R

552115-4 TUBE ASSY, (MANIFOLD OUT) 5211A20503R R

552116 VALVE, REVERSING 5220AP3777A R

561410 COIL ASYS REVERSING 3A02028B R

552201 CORE VALVE 4A00322A R

566000-1 HIGH PRESSURE SWITCH 6600AG3057A R

566000-2 HIGH PRESSURE SWITCH 3A01100A R

W3546 MESH 2A00191Q R

LOCATION NO. DESCRIPTION Part No. REMARKS

Parts List• Model: LBUM7280BL



– 52 –


W49810-2 SUPPORT VALVE 4980AP2621A R

W4810 BRACKET FRONT 4810AP7078A R

552203-1 VALVE SERVICE 2A00469H R

552203-2 VALVE SERVICE 2A00468C R

W49810-3 SUPPORTER REAR 4980AP1265Q R

W49810-4 SUPPORTER REAR 4980AP1265P R

W49810-5 SUPPORTER FRONT 4980AP1264P R

W49810-6 SUPPORTER FRONT 4980AP1263P R

349490 ORIFICE ASSY 4948AP1242R R

549610 MOUNT MOTOR ASSY 4961A10002A R

346811-1 MOTOR 4680AP2610B R

559010 FAN ASSY 0A00026B R

435301 GRILLE COVER 4948AP1242R R

437210-1 PANEL ASSY FRONT 3721AP2913P R

437210-2 PANEL ASSY FRONT 3721AP2913Q R

435511 COVER ASSY CONTROL 3551AP7047Z R

237200-1 PANEL INSTALL-U 3720AP3810P R237200-2 BRACKET INSTALL-L 4810AP3814P R

Parts List• Model: LBUM7280BL



Memo

– 53 –



Memo

– 54 –

lg_lbum7280bl exploded view

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