samsung top load washer repair guide
DESCRIPTION
Samsung Top Load Washer Repair Guide.pdfTRANSCRIPT
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HA Repair Guide Top-Load Washer
Top Load Washer
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Vibration
Noise
Vibration
& Noise
Water Leakage Leakage
Water Supply
No Power
Improper
Operation
Error mode
Test mode / Diagnosis
Power &
Error
HA Repair Guide [ Top Load Washer]
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#1. Symptom : Vibration & Noise
1-1. Schematic Diagram of Repair
Check-1 Cause Check-2 Tip
Code
Block
# 1 # 2 # 3
Spin-Vibration
1.Spin-basket defect Spin friction abrasion Concentricity Check (4mm) Curing part burst Spin-Nut loosening check
1-1
Spin-Basket
Spin-Nut +Clutch
Moisture-proof cloth
2.Damper defect Tub moving inclination check
Grease/Parts check Low-temp installation
environment
1-2
Damper Moisture-
proof cloth
Low-Temp
Environment
3. Unstable installation place
Floor moisture environment Low-temp environment
installation Dryer Pair installation
narrow Rear hose interference Floor shaking
1-3
Installation place
Install Environm
ent
4.Unstable installation of product Leg level installation check
Non-Slip Pad not attached Moving Pad/Pan-Drain
1-3
Level installatio
n
Non-Slip Sheet
Install
Product Noise
1.Pump-Drain defect
Pump-Case damage Fixing bolt loosening Foreign substance in Pump Impeller damage
1-4
Pump-Case
Impeller Foreign Substanc
e
2.Clutch,Motor defect Spin-mode PBA Check
Abnormal noise diagnosis Motor friction Check
1-5
Main-PBA (IPM)
Hall-S/S Motor
3.MEMS Sensor defect
Error Mode Check -8E1 Voltage Check Loose Terminal Check
4-11
Main-PBA MEMS Harness
4.Customer misunderstan
ding NDF Customer use moisture-
proof cloth Washing a little amount Spin-only course used Not using the Net only for
bedding
1-6 Moisture-
proof cloth
Washing of Little Amount
Not using for-
special-use net
5. Product inherent feature
Resonance RPM frequency shaking
Shaking at the beginning Sound of Tub water (Add salt water to Balancer)
1-6 Resonance Phenomen
on Balancer
Chassis Project Basic Model Type
Top-Load All All Tub With Pump / Tact Button
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Step 1
Spin-Basket Exterior Damage Check - Check the friction phenomenon at the top. - Check the opening of Wrapper bottom. If exterior damage or friction phenomenon occurs
as in the photo, replace the Spin-Basket & Tub-Cover.
Step 2 Spin Mode Check - Turn knob and select SPN to start. - Check if the max RPM is reached. (800rpm 10%) Unbalance Test Check - Run Spin Test with Unbalance 400g placed on one
side. 400g about 3 towels OR Jig for this purpose
only - Check for abnormal noise & Set moving. If noise or operation does not seem normal, check
Step #3.
Step 3
Spin-Basket Concentricity Check - Turn the Spin-Basket based on 9 o clock direction
and measure the deviation. - If it shakes more than 5mm, it is defect.
SpinNut Loosening Check - When Shaken, the Spin-Basket shakes. - If the spot of Spin-Nut fastening is inclined to one
side, it is defect. => Spin-Basket concentricity defect & Spin-Nut
connection defect - Replace the Spin-Basket & Spin-Nut.
- Check the customer usage condition and explain to the customer how to. Explain to the customer after SVC. Check the customer usage condition. - Check if moisture-proof cloth is used and explain
not to use it. : WaterProof Sheet, Mats, clothing
Check Point Check the condition of Spin-Basket / usage environment.
Tip 1-1. Spin-Basket Abnormality
Press and hold Spin+Soil and push the power button => Test Mode
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Step 1
Check if Tub moves up and down. - If the surrounding temperature is below zero at the
time of installation, explain to the customer that it is inappropriate for the product installation.
Check if there is noise. - If Damper does not return or press when checking
abnormal noise & up-and-down movement, check Step #2.
Step 2 Check damper parts & the condition of grease
application. - Check for the loosening of Damper inside. : Sponge inside is damaged or omitted. - Check the grease on Damper. Maintain Damper
smooth. Replace the Damper. Check if Damper is damaged. - Replace the Damper.
- Check the usage condition of customer and provide guidance.
Explain to the customer after SVC. Check the customer usage condition. - Check if moisture-proof cloth is used and explain
not to use it. : WaterProof Sheet, Mats, clothing
Check Point Check the condition of Damper operation.
Tip 1-2. Damper Abnormality
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Step 1
Check the frictional relationship with the
surroundings when installing. - Install a pair of dryers attached. If frame is shaking
during spinning mode, interference noise is generated.
Friction occurs due to unstable shaping of water
supply/drain hose - Prevent friction between water supply/drain hose and
product or wall. Floor is shaking, which makes the product move. Case#1 Levelness defect due to floor damage. Case#2 Shaking due to old laundry room
floor(lumber). => It is recommended to contact the installer and request
for re-installation such that it does not influence on the vibration.
Step 2 Check the condition of levelness of product
installation. - For the left and right of product, check the level at
the top of Lid-T/C. - For the front and rear of product, check the level on
the side of product. When checking the left-and-right level of the product,
Tub is inclined to one side due to tension of Drain-hose. (During water supply, it is in the right place.)
For level installation, adjust Leg to be attached to the
floor. Noise from Set on slippery floor (Tile, Moisture) - Attach Non-Slip Pad to both front legs on the floor. - Install the front legs of product to be located on the
Non-Slip Pad. Inappropriate material of leg for the floor Case#1 Pan Drain Friction Noise Case#2 Use paper for floor protection on the Leg
bottom. => It is recommended to contact the installer and request
for re-installation such that it does not influence on the vibration.
Check Point Check the installation place & the condition of unstable installation.
Tip 1-3. Install Place & Unstable Install Abnormality
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Step 1
Mechanical Friction Noise - When pump drain is operating, it vibrates a little. If drain parts such as drain hose are near other parts, it may cause mechanical friction noise.
Step 2
Foreign materials in Pump Drain - Open debris filter and check there are foreign materials such as coins, pins etc. - Check pump drain impeller is broken.
If there is noise or operation is not smooth, check Step #3.
Step 3
Pump Drain - If pump drain is defective, it may cause noise during drain cycle. In this case, replace pump drain.
Small foreign materials
- When water is draining through drain hose,
small foreign materials could drain with
water because there is no filter.
So, it can make a little bit of noise but it is
not a problem
=> Replace the Pump-Drain.
Check Point Check the condition of Pump-Drain.
Tip 1-4. Pump-Drain Abnormality
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Step 1
Check for the breakage of wire of washing
motor. - Separate the Cover-Panel from product. - Separate the 9Pin housing to measure the
Female terminal. - Motor Coil Measurement 3 phases of Coil RST : 9.82 Resistance changes due to influence by
Magnetic of Rotor. If coil value open defect, check the terminal pin
and replace the stator.
Step 2
Check the operation of washing motor. - Turn the power on and start the normal course. - When weight-sensing is operating, check the
frictional noise of washing motor while Motor-L / Motor-R is rotating.
When there is abnormal noise or Rotor
constraint, replace the Rotor.
Step 3 Check for Clutch noise during spinning mode. - Press and hold Spin+Soil, while pushing the power button. =>Test Mode - Adjust knob and select SPN to start. - Check if max RPM is reached. (800rpm 10%) If noise is generated from Clutch, disassemble
the Rotor and check for abrasion. - Disassemble the Rotor. - Check for the abrasion of Gear of Clutch-Boss
assembly. => Replace deformed Clutch Lever and damaged Gear.
Check Point Check the condition of Clutch & Motor operation.
Tip 1-5. Clutch & Motor Abnormality
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Step 1
Explain to the customer. - Check the customer usage condition. - Check if he/she uses moisture-proof cloth and tell
them not to use it. : WaterProof Sheet, Mats, clothing Unbalance vibration due to laundry inclined to one
side. Case#1 Inclination occurs due to washing small
amount or excessive amount. Case#2 Inclination occurs due to using spin-only
course. Case#3 When washing bedding, bedding net is not
used. => Check the customer usage condition and explain
how to use it correctly.
Step 2 Resonance phenomenon occurs in the rising
section during spinning mode. - Hudson Resonant Frequency : 200~450rpm section - In the resonant frequency, Tub moves. The resonance phenomenon occurs in the rpm
rising section at the beginning for spinning, which is normal.
The sound of water is generated when shaking
tub. - Explain that the sound comes from salt water which
is the center of gravity in the Balancer and that it is normal.
If there is no water sound in the Balancer when
checking the Tub, it is defect. Thus, replace the Spin-Basket.
=> Explain that it is one of the characteristics created
while designing the product.
Check Point Explain the NDF and the product characteristics.
Tip 1-6. Explanation of NDF & Product Characteristics
Salt-Water
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#2. Symptom : Water Leakage
2-1. Schematic Diagram of Repair
Check-1 Cause Check-2 Tip
Code
Block
# 1 # 2 # 3
Water Supply
1. Water Supply Hose Connection
Tool over-connection loose
Packing omitted Y-Joint Seal water
leakage Cold-water-only
installation Wall-attached
installation
2-1
Water Supply Hose
Water Supply Valve
Y-Joint
2.Water-V/V Leakage
Foreign substance enters pipe
End of water supply valve damaged
Body damage Bad packing assembly Freeze in the winter
2-2
Water Supply Valve
Water Supply Hose
Piping
3. Detergent Drawer Leakage Nozzle spray angle
Bleach overflow Water pressure /
Inclined installation Too much laundry
input
2-3
Install Condition
-slope -water
pressure -filter
Nozzle Washing Amount
4.Tub-related leakage Water level hose
damage Aquajet overflow Tub Crack Damage by coin
2-4
Tub Coin
5.Pump leakage
Pump-Drain hose Pump-Case Drain hose
2-5
Pump-Case
Drain-Hose
Installation/ NDF
1. Install & NDF
Waste water backward-flow
Continuous drainage Drops a little
2-6
Drain Hose
Clamp Pulsator
Chassis Project Basic Model Type
Top-Load All All Tub With Pump / Tact Button
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Step 1
Over-connection of water supply hose using a tool - The screw-head of water supply valve is loose due to
abrasion. - Leakage occurs in the scratched part of the end of
water supply valve.
Step 2 Water Supply Hose Unit Check - Water leaks due to loose caulking. - Check the water pressure: Shall not exceed max of
8kgf.. Check for defect in installed sub-material unit. - Check if internal Packing-Seal is omitted or worn out. - Check for water leakage of Y-Joint Unit. : Apply more Seal Taping to the water-supply-related
parts. If water leaks due to installation condition outside the
product, check Step#3.
Step 3
Hose is bent during installation. - Water leaks due to hose bending and friction caused
by the installation of product rear close to the wall. - It is recommended that the gap between the product
rear and the wall be maintained at 6in(152).
Water leaks due to backward-flow when installing cold-water-only.
- Water leakage due to backward-flow phenomenon of internal Drawer.
- Error occurs during hot water course; and thus explain to the customer to install both hot and cold water.
Explain to the customer after SVC. => It is recommended that the installer re-install it such
that it does not influence on water leakage and vibration.
Check Point Check the condition of Water-Hose.
Tip 2-1. Water-Hose & Connection Abnormality
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Step 1
Check if the Filter of water supply hose is
clogged by foreign substance. - Separate the Filter with a tool. Check for the clogging and clean the Filter. - Clean it regularly to prevent accumulation of
foreign substance. - Prevent the water leakage caused by valve.
Step 2 Check the exterior of water supply valve unit. - Check if the screw-head is worn out due to over-
connection of water supply hose using a tool. - Check for the scratch at the end of water supply
valve in the process of installation. Check for the water leakage part of water supply
valve. - Water leaks due to continuous water supply
because foreign substance enters inside. - Water leaks due to damaged body of water
supply valve. - Water leaks due to bad Packing connection. If noise or operation is not normal, check Step #3.
Step 3
Water Suply Valve Body Damage - The body of water supply valve is damaged due
to cold temperatures. Explain to the customer after SVC. Explain to the customer to re-install the product
such that it is not influenced by cold temperatures
Check Point Check the Water-V/V & Connection.
Tip 2-2. Water-V/V & Connection Abnormality
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Step 2 It scatters outside according to the angle of
Nozzle. - Adjust it if the angle of assembly is warped. - Waterjet scatters to Burr of the plane inside
Nozzle. -> Replace. Bleach Leakage-Point - Apply Bond to Section A-A. - Replace the Case-Bleach(U). Detergent Leakage-Point - Check if powder is mistakenly used in drawer
for Liquid detergent.
Step 3 Detergent & Bleach backflows out of Tub. Check the water pressure environment to
maintain the appropriate pressure. : Shall maintain the water pressure at 1kgf. or
over. : Clean the Filter of water supply valve regularly. Laundry input - If too much laundry is input, it scatters during
water supply or circulation(cycle) pumping. - It is recommended that laundry net be used
for the laundry which tends to move to the top, such as bedding, etc.
Check the level installation condition of product. - If the product inclines to the rear side, it is
vulnerable to Detergent leakage.
Check Point Check the condition of Detergent & Bleach.
Tip 2-3. Detergent & Bleach Abnormality
Leakage-Point Section A-A
OK
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Step 1
Check for the water leakage phenomenon of
water level hose. - Water level hose inserting part damage Water level hose separation or assembly
omitted. Re-assemble the water level hose and apply
Bond. - Assemble the Clamp.
Step 2 When aquajet is working, check for the
overflow. - Check if internal packing is omitted. - Replace the screw fixing Tub-Cover top with
more improved sample. Check for the water leakage part of tub. - Water leaks due to Cap trap welding. - Crack caused by unmelted injection at the Tub
bottom.
Step 3
Tub below 100mm point damage - Damage usually occurs at the point 100mm
below the tub during high-speed spinning mode due to coin and foreign substance in the laundry.
Check the customer usage condition and
explain to the customer how to use it properly.
- Explain how to remove coin and foreign substance in the laundry.
Check Point Check the condition of Tub & Aquajet.
Tip 2-4. Tub Abnormality
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Step 1
The structure of Pump-Case Tub bottom
connection is damaged or separated. - Structure of Pump-Case assembly at the Tub
bottom (Portion produced before Dec 10, 2012) Replace the damaged Pump-Case and fix
wire. - Insert the taping into hook of wire. - Bind it with Cable Tie, since the wire
separates and breaks due to continuous vibration.
Step 2 Check for the water leakage of Drain-
Hose(o). - If water droplet forms, check for crack or
tearing. - Replace the Drain-Hose(o). Check for the water leakage of Pump. - Check the water leakage phenomenon of
Pump. - Replace the Assy of Pump-Case. Check for the water leakage of Pin-Hole and
binding part of drain hose.
Check Point Check the condition of Pump & Hose.
Tip 2-5. Pump Connection Abnormality
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Step 1 Waste water flows back into the washer. Drain hose is installed to deep in the stand
pipe in a basement. Thus, waste water discharged from first floor flows back into the product.
As in photo, place the drain hose so that drain
hose may not go back to the upper part of U-trap.
Step 2 Water drains during washing mode. If drain hose is installed after loosening the
fixing part, then water drains continuously. As in the warning label, re-install it without
disassembling the drain hose fixing part. Then, explain how to use it.
Step 3
If water drop falls little by little even after
washing mode ends, Explain to the customer that the water
remaining in the detergent drawer drops due to impact when disassembling it.
Check Point Check the condition of Install & NDF.
Tip 2-6. Install & NDF Connection Abnormality
Re-install the drain hose which flows back to the U-Trap of pipe.
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#3. Symptom : Water Supply & Drain
3-1. Schematic Diagram of Repair
Check-1 Cause Check-2 Tip
Code
Block
# 1 # 2 # 3
Power Supply
1.No power
Power-Cord breakage
Fuse breakage EMI-Filter breakage Main-Harness defect
3-1 Power-Cord
EMI-Filter Harness
Water Supply Fail
1. Water Supply Fail
Install close to wall Water valve check Cold/Hot water
switched Clean foreign
substance in pipe filter
Valve coil resistance PBA applied voltage
3-2
Installation
Valve Damage
PBA
2. Weight sensing defect
Weight sensing reduce
Motor unit constraint
Load
3-3
Washing Motor
Hall Sensor
PBA
3.Water level sensing defect
Water level hose Punk
Water level hose clogged
Water level sensor wire breakage
Water level frequency check
3-4
Water level hose
Water level
sensor
Detergent Drawer Residue
1. Detergent residue If water remains If detergent remains Gel-type or highly-
enriched detergent
3-5 Detergent Rinse Bleach
Drain Fail
1. Pump check Nd Error check Pump-Case damage Pump Wire breakage Drain hose clogged
with foreign substance
3-6 Pump
damage
Wire brea
kage
Foreign substance clogging
Chassis Project Basic Model Type
Top-Load All All Tub With Pump / Tact Button
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Step 1
Unit does not come on. - Measure the power of socket and check if it is rated.
Check the Power-Cord. - Terminal deformation - Check if the exterior is corroded.
Step 2 Check for an open fuse. - Replace the fuse if it is open - Replace it with the rated capacity. Check for the wire breakage defect in EMI-Filter. - Check for the contact fail due to reverse insertion
of Housing. - Check if the terminal pin is pushed back. - Check if the internal wire is broken. Measure the voltages of both ends of the EMI-
Filter. Maintain the voltage of 120V If NG, replace the
wire. Maintain the voltage of 120V If OK, check Step #3.
Step 3
Check the AC power supplied to PBA. BlueWhite of CN1: Check if it maintains the voltage
of 120V. Maintain the voltage of 120V If OK, replace the
PBA. Maintain the voltage of 120V If NG, replace the
wire.
Check Point Check the condition of Power Cord/Fuse/EMI-Filter.
Tip 3-1. No Power Abnormality
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Step 1
Check if water supply fails due to hose bent during
installation. - Water supply fails due to hose bending and friction
caused by the close-to-wall installation of the product rear.
If the filter is clogged due to pipe problem or
water quality problem, - Separate the filter with a tool. - Clean the Filter with a brush.
Step 2 Check the condition of water supply valve
connection. - Check if the terminal pin is pushed back. - Check if Harness wire is broken. Check the exterior of valve. - The solenoid does not sit flush on the valve body. - Crack in the valve body. Check the resistance of both ends of water supply
valve. Maintain the coil resistance at 1.0 -> If O.L,
replace the valve.
Step 3
Check the power supplied from PBA. - Press and hold Spin+Soil, while pressing the power button=> Test Mode - Turn knob to select tS mode. - Push Temp 4 times to work the valve. - Turn on all the LED lights to measure the power supply of water supply valve. Check the applied voltage of both ends of the
water supply valve. Maintain the supplied voltage of valve at 120V. If
NG, replace the PBA.
Check Point Check the Water-Hose / Water Supply Valve / Install Condition.
Tip 3-2. Water Supply Fail Abnormality
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Step 1
Check the water level by sensing weight with empty tub. - Normal Course: approx. 80mm - Other Course or Soil-Level : approx. 100mm Explain to the customer how to use it. - Explain that either Other course or Soil is recommended
because they correct the water level based on the absorption power of load.
Step 2
Wrong weight-sensing due to washing motor stator
defect - Separate the Cover-Panel from product. - Separate the 9Pin housing to measure the Female
terminal. - Motor Coil Resistance 3-phases of Coil UVW : 9.82 - If coil value open defect, check the terminal pin. Incorrect weight-sensing due to the abnormality of
Washing motor rotor. - Constraint occurs during operation because the
surrounding iron powder enters due to the magnetism of Rotor-Magnetic. Thus, wrong water level is sensed.
Incorrect weight-sensing due to defect in Hall Sensor
characteristics - Check of -VCC(RED) The Voltage : approximately 5.0V - Check of -U(BLU) / -V(ORG) The Voltage : approximately 0~1v Pulse Rotor slow turning by manually -GND(GRN) Contact to (-)Black Tester Replace the Main PCB
Step 3 Check the Wash Motor Supply Voltage of PCB
- Pin #1 / #2 / #3 of CN3 = DC 145v
(GND CN1 Black)
Replace the PBA
Check Point Check the condition of Motor weight-sensing.
Tip 3-3. Weight-Sensing Abnormality
CN3 1-U 2-V 3-W
Normal course
Other course
01v
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Step 1
If 1E error occurs in Main PBA, have it checked.
Check if the wire of water level sensor is broken. Maintain the coil resistance at 20~24. -> If O.L,
replace it. Measure the frequency of water level sensor during
stand-by. - Measure the water level sensor during stand-by with
the power on. - Simultaneously push the Spin+Delay Start buttons for
10 sec. - Turn knob to select Heavy-Duty course. - 0266 are displayed by turns. How-to-read: 0266 => 0266 => 26.6kHz Frequency of 26.4kH : If 25.9kHz or lower, replace it.
Step 2
Check the sensing of water level sensor, - if the water level hose is clogged by foreign substance
or bending; - if the water level hose is punctured or separated. When the frequency does not rise during water supply,
it is considered as water leakage phenomenon due to Tub damage. Thus, water supply stops.
Check if the contact between water level sensor and
terminal is incomplete.
SVC Note Do not adjust the top part of water level sensor. Bond is applied to the top part of water level sensor
after setting it at the time of factory shipment. Thus, do not adjust it.
If it is adjusted, the spinning mode is not activated due to change in Reset frequency.
Check Point Check the water level sensor & connection condition.
Tip 3-4. Water Level Sensing Abnormality
Not Adjust Bolt
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Step 1 If water remains, open the Siphon-Cap of detergent drawer and fabric
softener drawer and check for Burr which occurs during injection.
Case of Burr see photo of phenomenon
Step 2 If detergent remains, the detergent was thickened (viscosity) and
solidified because it had been used for a long period of time. Thus, explain to the customer the caution phrase of detergent manufacturer as to dissolving it in water.
Guide phrase from the manufacturer, regarding
detergent characteristics
Step 3 Explain to the customer after SVC. Explain him/her to limit using high-enriched or gel-
type detergent.
Check Point Check the condition of Detergent & Bleach.
Tip 3-5. Detergent Drawer Residue Abnormality
Caution : If Product freezes or thickens, dissolve a capful in a cup of water. Shake well before use.
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Step 1
Check the pump with drain fail. - Check Voltage at Pin YellowBlack : 120vAC Replace the Main PCB - Check Pump Coil at YellowBlack : 15.5 Replace the Wire or Pump Step #2 Wire Check Small foreign materials
- When water is draining through drain hose,
small foreign materials could drain with
water because there is no filter.
So, it can make a little bit of noise but it is
not a problem - Check pump drain impeller is broken.
Step 2 The structure of Pump-Case Tub bottom
connection is damaged or separated. - The structure of Tub bottom Pump-Case
assembly. (Portion produced before Dec 10, 2012) Replace the damaged portion of Pump-Case
and fix Wire. - Insert the taping into hook of wire. - Separation and wire breakage occur due to
continuous vibration. Thus, bind it with Cable Tie.
Check Point Check the condition of Pump & Hose.
Tip 3-6. Drain Fail Abnormality
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Error Mode Check 1. Fix the Error mode displayed on Control Panel. 2. Service Mode Diagnostic Mode Error Check : Delay Start + Extra Rinse (*WA400WA422) : Delay Start + Aquajet (*WA456) : Push Spin, and if d is displayed, turn knob.
Display (Image)
Error Item How-to IMAGE
Nf No Water Fill Water supply hose bent. Water supply valve/PBA power
supply check
Nd Will not drain Check the power of drain pump. Clean the filter of drain pump.
IE Sensor fail Water Sensor Measure the water level
frequency during stand-by.
OE Water over flow Constant water supply from
Water supply valve Excessive foam from detergent
for general use
LE Water Leakage Water level sensor / Water level
hose Punk Tub Leakage
3E Wash Motor Washing Motor Wire Connection PBA IPM output voltage check
dC Unbalance Level installation check Check the standard for
recommended use of laundry
Next Page
#4. Symptom : Error Check
4-1. Schematic Diagram of Repair
(*WA456)
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Error Mode Check 1. Fix the Error mode displayed on Control Panel. 2. Service Mode Diagnostic Mode Error Check : Delay Start + Extra Rinse (*WA400WA422) : Delay Start + Aquajet (*WA456) : Push Spin, and if d is displayed, turn knob.
Display (Image)
Error Item How-to IMAGE
tE Water temp. Sensor Wire Connection Measure the resistance of sensor
temperature.
nf1 Water Hose
Connection Cold/Hot water supply hoses
switched.
LO Door Will nor
Unlock
PBA Door-Lock operation check Measure the Door-Lock
resistance.
FL Fail to Lock PBA Door-Lock operation check Measure the Door-Lock
resistance.
DS Door is Open Door Open check Fabric jamming
AE PBA
Communication Sub PBA Wire Connection
E2 Button Pressed Tact Button Pressed Wire Connection
8E/8E1 MEMS Sensor MEMS Wire Connection MEMS Voltage Check
(* WA400WA422)
#4. Symptom : Error Check
4-1. Schematic Diagram of Repair
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Step 1 nF Error Check
Check the water supply hose during installation. - Water supply fails due to hose bending and friction,
because the product rear is installed too close to the wall.
The filter is clogged due to problems with pipe and
water quality. - Separate the Filter with a tool. - Clean the filter with a brush.
Step 2 Check the condition of water supply valve connection. - Check if the terminal pin is pushed back. - Check if Harness wire is broken. Check the exterior of valve. - The top core of water supply valve heaves. - Crack on the Body Check the resistance of both ends of water supply
valve. Maintain the coil resistance at 1.0. -> If O.L, replace
the valve.
Step 3
Check the power supply from PBA. - Press and hold Spin+Soil, while pressing the power button. => Test Mode - Turn knob to select tS mode. - Push Temp to work the valve. - Turn All the lights on to work the valve. Check the voltage applied to both ends of water supply
valve. Maintain the valve supply voltage at 120V. If NG,
replace the PBA.
Check Point Check the condition of Water-Hose.
Tip 4-1. nF Error
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Step 1 nD Error
Check the Pump with the drain fail. - Check Voltage at Pin YellowBlack : AC120v Replace the Main PCB - Check Pump Coil at YellowBlack : 15.5 Replace the Wire or Pump Step #2 Wire Check Small foreign materials
- When water is draining through drain hose,
small foreign materials could drain with
water because there is no filter.
So, it can make a little bit of noise but it is
not a problem - Check pump drain impeller is broken.
Step 2 The structure of Pump-Case Tub bottom
connection gets damaged and separated. - Structure of Tub bottom Pump-Case
assembly (Portion produced before Dec 10, 2012) Replace the damaged portion of Pump-Case
and fix wire. - Insert the taping into wire hook. - Separation and wire breakage occur due to
constant vibration. Thus, bind it with Cable Tie.
Check Point Check the condition of Pump & Hose.
Tip 4-2. nd Error
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Step 1 IE Check
If 1E error occurs in Main PBA, have it checked.
Check the water level sensor. - Measure the coil resistance and check for wire
breakage. Maintain the coil resistance at 20~24 -> If O.L,
replace it. Measure the frequency when the water level
sensor is on stand-by. - Measure the water level sensor during stand-by
with the power on. - Push the Spin button+Delay Start button for about
10 sec. - Turn knob to select the Heavy-Duty course. - 0266 are displayed by turns. How-to-read: 0266 => 0266 => 26.6kHz If the frequency is 26.4kH : 25.9kHz or lower,
replace it.
Step 2 OE Check
Check the sensing of water level sensor, - if water level hose is clogged by foreign substance
or bending; - if the hose is punctured or detached. The frequency does not rise during water supply,
which is considered water leakage phenomenon caused by Tub damage. Thus, water supply stops.
Check if the water level sensor terminal contact is
incomplete. They apply bond to the top part of water level sensor
when shipped from factory. Thus, do not adjust it. If you adjust it, the spinning mode cannot be
activated due to change in Reset frequency.
Check Point Check the water level sensor & connection condition.
Tip 4-3. IE / OE Error
Not Adjust Bolt
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Step 1 LE Error Check
If LE error occurs in Main PBA, have it checked. Measure the frequency when the water is at mid- to
high level. - Measure the water level sensor during stand-by with
the power on. - Push Spin+Delay Start for about 10 sec. - Turn knob to select the Heavy-Duty course. - 0266 are displayed by turns. How-to-read: 0266 => 0266 => 26.6kHz Frequency of 21~24kH : If out of range, have it
replaced.
Step 2 Water level hose Air leakage If LE error occurs in Main PBA, have it checked. - Crack in the water level hose. - Check if air is leaking from punctured water level hose.
Step 3 Drain hose Siphon
If drain hose is inserted too deeply into drainage
adjust it not to sink to water in drainage.
Dont remove the screw holding drain hose to frame. If it is removed, drain hose is down on floor and water is drained out automatically Check if there are holes on drain hose.
Check Point Check the water level sensor & the water leakage condition.
Tip 4-4. LE Error
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Step 1
Check the Wash Motor Supply Voltage of PCB
- Pin #1 / #2 / #3 of CN3 = AC 145v
(GND CN1 Black)
Replace the PBA
Step 2
Washing Motor Stator Defect - Separate the Cover-Panel from product. - Separate the 9Pin housing to measure the Female
terminal. - Motor Coil Measurement between 3 phrases of Coil UVW : 9.82 - In the case of coil value open defect, check the terminal
pin. Washing Motor Rotor Constraint - Constraint phenomenon occurs during operation
because the surrounding iron powder enters by magnetism of Rotor-Magnetic. Thus, incorrect water level is sensed.
Step 2
Hall Sensor Characteristics Check - Remove CN9 and measure the Resistance : about 40~60
- Measure the Hall Sensor Resistance Red/Blue/Orange pin (GND CN9 Green) Replace the Wire or Motor Motor Control Signal Characteristics Check - Check Voltage at Pin Green and Blue/Orange Spin-Basket slow turning by manually - Check Voltage at Pin Green and Red : 5v Replace the Main PCB
Check Point Check the condition of Motor rotation & Hall Sensor.
Tip 4-5. 3E Error
CN3 1-U 2-V 3-W
01v
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Step 1 dC Error
Tub Balancer Check - If there is no water sound inside the Balancer when
checking Tub, it is defect. Thus, replace the Spin-Basket.
Unbalance-Retry phenomenon caused by moisture-
proof cloth - Check if moisture-proof cloth is used, and explain not
to use it. : WaterProof Sheet, Mats, clothing Unbalance vibration caused by laundry inclined to
one side. Case#1 Inclination occurs due to a little or too much
laundry. Case#2 Inclination occurs when the spin-only course
is used. Case#3 When washing bedding, net is not used. When complying with recommended washing usage
condition, check the installation condition of Step #2.
Step 2 Check for Frame touch caused by inclined installation. - For the left and right of product, check the levelness-
measuring apparatus at the top of Lid-T/C. - For the front and rear of product, check the levelness-
measuring apparatus on the side of Frame. Product moves due to floor shaking. Case#1 Level defect due to floor damage. Case#2 Shaking due to old laundry room
floor(lumber). If OK with the recommended washing usage condition
& installation condition, check the Motor & Hall Sensor of Tip 4-6.
Check Point Check the customer usage-condition/installation for unbalance & the motor condition.
Tip 4-6. dC Error Abnormality
Salt-Water
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Step 1 tE Error
Wire connection - Check the connection of wire Remove 6-Pin Housing Check the thermistor resistance.
Normal resistance : 97~98 (10)
60~61 (20)
39~40 (30)
Measure the resistance of both ends of Thermistor in the room temperature of 25 (Green/Pink) : 47.2
Replace the thermistor
Step 2 Connect 6-Pin Housing and turn the power on. Check for the normal operation of PBA. - Measure the resistance of both ends of
Thermistor in the room temperature. (Blue/Pink) : DC 2.72v
Replace the PCB
Step 3 nF1
Check if the cold/hot water supply hoses are switched when installed.
Check Point Explain the Thermistor operation.
Tip 4-7. tE Error Abnormality
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Step 1 dS Error
If the dS Error occurs. If press Start with the Door open.
If laundry is jammed under the Door.
Close the Door properly and press Start. Replace the Door-Lock
Step 2 FL Error
Sensing error occurs due to Door-lock
interference because the Door Lid-T/C shrinks in the winter.
Remove the Rib from Lever inserting part of
Door-Lid-T/C. Replace the Door Lid-T/C
Step LO Error In state of Door Unlock, Check motor resistance (Checking part : Black-Brown Wire) Normal resistance : 33 to 46 between the terminals of Motor. In state of Door Unlock, Check Door Unlock contact Resistance (Checking part : White-Blue Wire) If Resistance is satisfied with Spec, Replace the door-Lock
Check Point Check the Door / Door-Lock.
Tip 4-8. dS, FL, LO Error Abnormality
Rib
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Step 1 AE Error
Disassemble sub PBA . Check the connector which connects sub PBA and main PBA on sub PBA.
Replace the Sub-PCB
Step 2 nE Error
If there are no button stuck on control panel, replace sub PBA. This case can be caused when tact switches on sub PBA are defective. You can see that the resistance of defective tact switches is not normal. The Resistance : - ( when tact switch is not pressed ) - 0 ( when tact switch is pressed ) Replace the Sub-PCB
Check Point Check the PBA-communication / Button.
Tip 4-9. AE, nE Error Abnormality
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Step 1 8E Error
Main PCB all-in-one type MEMS circuit Check for the incomplete contact of water
level sensor terminal. Replace the PBA
Step 2 8E1 Error
Check the condition of terminal contact to
check MEMS. Check for MEMS wire breakage & circuit
defect. - MEMS Terminal Check . 7Pin RED (VCC) - 45~85 / DC +3.3V . 8Pin WHT (SPC) - 45~85 / DC +2.6V . 9Pin ORG (SD1) - 45~85 / DC +2.6V . 10Pin YEL (SD0) - 45~85 / DC +2.6V . 11Pin PNK(CS1) - 45~85 / DC +2.6V 12Pin BLU(GND) Contact to (-) Tester Replace the MEMS of Resistance - Separate the terminal to measure the
MEMS-Resistance. - According to characteristics of Tester, there
is difference in measurement due to difference in Impedance.
- Judgment should focus on wire breakage (O.L).
Replace the PBA of Voltage - Connect the terminal and measure the
voltage with the power on.
Check Point Check the PBA-communication / Button.
Tip 4-10. 8E, 8E1 Error Abnormality
Check Point
MEMS
Check MEMS-Resistance
Check PBA-Voltage
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Test Mode Power Off Status
Power On Status
Quick Test Mode
Service Mode
Quick Spin Test Mode
S/W Version Check Mode
Board Input Test Mode
Diagnostic Code Check Mode
# Quick Test Mode
You can check the operation of main electric parts easily on quick test mode.
(Water valve, Door lock S/W, Heater, Drain pump)
Enter Quick test mode.
Software version is displayed and turn jog-dial so that the version disappears.
You can check the operation of water valve, drain pump, circulation pump, heater,
door lock S/W by pressing a button.
Model Key Check part
WA400
WA422
WA456
Temp Water valve
Spin Drain pump
Soil level Door lock S/W
Model Quick test
mode Quick spin test mode
Service mode
S/W version check mode
Board input test mode
Diagnostic mode
WA400 WA422 Spin+
Soil level+ Power key
Delay start + Pre Soak +Power Key
Delay Start
+Extra rinse Soil level
Extra Rinse
Spin
WA456
Delay start + Eco Plus +Power Key
Delay Start
+Aquajet Eco plus
Check Point Check the Test Mode / Diagnostic Mode.
#5. Symptom : Test Mode & Circuit Diagram
5-1. Schematic Diagram of Repair
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# Service Mode
Service mode enables service technicians to verify the operation of washing machine
and do troubleshooting.
Service mode can be entered during all washing cycle without interrupting the cycle
except some of test modes.
- The washer must be on to go into the Service mode.
- When you enter Service mode, you can see motor spin RPM.
# Quick Spin Test Mode
You can check motor spinning on quick spin test mode.
As it enters into quick spin test mode, it starts spinning and reaches to its maximum
RPM.
When motor is not spinning, you can enter into quick spin test mode.
# Board Input Test Mode
Board input test mode is to display a specified input.
As it enters into board input test mode,
Turn jog-dial so that the LED turns on and press the start / pause button.
Course Normal Perm Press Delicates/
Hand Wash Quick Wash Pure Cycle
Display Water temp.
() Water temp.
()
Door status (OP:open, CL:close)
Door lock S/W status
(UL:unlock LO:lock)
Water Frequency
# Diagnostic Mode
You can check what error codes have occurred through diagnostic mode.
When you enter into diagnostic mode, d is displayed.
And if you turn jog-dial in a clockwise or counter-clockwise,
you can see error codes that have happened recently.