HA Repair Guide Top-Load Washer
Top Load Washer
- 1/37 -
HA Repair Guide [ Top Load Washer]
Vibration
• Vibration
& Noise
• Noise
Leakage
• Water Leakage
Improper
• Water Supply
Operation • No Power
Power & Error
• Error mode • Test mode / Diagnosis
- 2/37 -
#1. Symptom : Vibration & Noise 1-1. Schematic Diagram of Repair Chassis
Project
Basic Model
Type
Top-Load
All
All
Tub With Pump / Tact Button
Check-1
Cause
Check-2
1.Spin-basket defect 2.Damper defect
Spin-Vibration
3. Unstable installation place
Spin friction abrasion Concentricity Check (4mm↓) Curing part burst Spin-Nut loosening check
Tub moving inclination check Grease/Parts check Low-temp installation environment Floor moisture environment Low-temp environment installation Dryer Pair installation narrow Rear hose interference Floor shaking
4.Unstable installation of product Leg level installation check Non-Slip Pad not attached Moving Pad/Pan-Drain
Tip Code 1-1
1-2
#1
Block #2
SpinBasket
Spin-Nut +Clutch
#3 Moistureproof cloth
LowMoistureTemp Damper proof Environm cloth ent Install Environm n place ent
1-3 Installatio
1-3
Level Non-Slip installatio Sheet n
Install
1.Pump-Drain defect
Pump-Case damage Fixing bolt loosening Foreign substance in Pump Impeller damage
1-4
PumpCase
Foreign Impeller 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
Product Noise
4.Customer misunderstan ding NDF 5. Product inherent feature
Customer use moistureproof cloth Washing a little amount Spin-only course used Not using the Net only for bedding
Resonance RPM frequency shaking Shaking at the beginning Sound of Tub water (Add salt water to Balancer)
- 3/37 -
4-11
Main-PBA MEMS
Harness
Not using Moisture- Washing forproof of Little 1-6 specialcloth Amount use net Resonance
1-6 Phenomen Balancer on
Tip 1-1. Spin-Basket Abnormality Check Point
Check the condition of Spin-Basket / usage environment.
Step 1 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 & TubCover.
Step 2 ① Spin Mode Check - Turn knob and select SPN to start. - Check if the max RPM is reached. (800rpm ±10%) ② 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. ③ If noise or operation does not seem normal, check Step #3. Step 3 ① 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. ② Spin–Nut 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. ① Check the customer usage condition. - Check if moisture-proof cloth is used and explain not to use it. : Water–Proof Sheet, Mats, clothing - 4/37 -
※ Press and hold Spin+Soil and push the power button => Test Mode
Tip 1-2. Damper Abnormality Check Point
Check the condition of Damper operation.
Step 1 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. ② 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 ① 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.
② Check if Damper is damaged. - Replace the Damper. - Check the usage condition of customer and provide guidance.
※ Explain to the customer after SVC. ① Check the customer usage condition. - Check if moisture-proof cloth is used and explain not to use it. : Water–Proof Sheet, Mats, clothing
- 5/37 -
Tip 1-3. Install Place & Unstable Install Abnormality Check Point
Check the installation place & the condition of unstable installation.
Step 1 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. ② Friction occurs due to unstable shaping of water supply/drain hose - Prevent friction between water supply/drain hose and product or wall. ③ 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 ① 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 Drainhose. (During water supply, it is in the right place.) ※ For level installation, adjust Leg to be attached to the floor. ② 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. ③ 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.
- 6/37 -
Tip 1-4. Pump-Drain Abnormality Check Point
Check the condition of Pump-Drain.
Step 1 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 ① 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.
② If there is noise or operation is not smooth, check Step #3. Step 3 ① Pump Drain
- If pump drain is defective, it may cause noise during drain cycle. In this case, replace pump drain.
② 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.
- 7/37 -
Tip 1-5. Clutch & Motor Abnormality Check Point
Check the condition of Clutch & Motor operation.
Step 1 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 R<->S<->T : 9.8±2Ω ※ Resistance changes due to influence by Magnetic of Rotor.
①
②
③
④
② If coil value open defect, check the terminal pin and replace the stator. Step 2 ① 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. ② When there is abnormal noise or Rotor constraint, replace the Rotor.
Step 3 ① 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%) ② 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. - 8/37 -
①
②
③
Tip 1-6. Explanation of NDF & Product Characteristics Check Point
Explain the NDF and the product characteristics.
Step 1 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. : Water–Proof Sheet, Mats, clothing ② 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 ① 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.
② 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.
- 9/37 -
Salt-Water
#2. Symptom : Water Leakage 2-1. Schematic Diagram of Repair Chassis
Project
Basic Model
Type
Top-Load
All
All
Tub With Pump / Tact Button
Check-1
Cause 1. Water Supply Hose Connection
2.Water-V/V Leakage
Water Supply
3. Detergent Drawer Leakage
4.Tub-related leakage
Check-2 Tool over-connection loose Packing omitted Y-Joint Seal water leakage Cold-water-only installation Wall-attached installation Foreign substance enters pipe End of water supply valve damaged Body damage Bad packing assembly Freeze in the winter Nozzle spray angle Bleach overflow Water pressure / Inclined installation Too much laundry input Water level hose damage Aquajet overflow Tub Crack Damage by coin
Tip Code
Block #1
#2
#3
2-1
Water Supply Hose
Water Supply Valve
Y-Joint
2-2
Water Supply Valve
Water Supply Hose
Piping
Install Condition 2-3 -slope Nozzle -water pressure -filter
2-4
Tub
Coin
2-5
PumpCase
DrainHose
2-6
Drain Hose
Clamp
Washing Amount
5.Pump leakage
Pump-Drain hose Pump-Case Drain hose
1. Install & NDF
Installation/ NDF
Waste water backward-flow Continuous drainage Drops a little
- 10/37 -
Pulsator
Tip 2-1. Water-Hose & Connection Abnormality Check Point
Check the condition of Water-Hose.
Step 1 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 ① Water Supply Hose Unit Check - Water leaks due to loose caulking. - Check the water pressure: Shall not exceed max of 8kgf.㎠. ② 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. ③ If water leaks due to installation condition outside the product, check Step#3.
Step 3 ① 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㎜). ② 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.
- 11/37 -
Tip 2-2. Water-V/V & Connection Abnormality Check Point
Check the Water-V/V & Connection.
Step 1 ① Check if the Filter of water supply hose is clogged by foreign substance. - Separate the Filter with a tool.
② 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 ① Check the exterior of water supply valve unit. - Check if the screw-head is worn out due to overconnection of water supply hose using a tool. - Check for the scratch at the end of water supply valve in the process of installation. ② 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.
③ If noise or operation is not normal, check Step #3. Step 3 ① 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 - 12/37 -
Tip 2-3. Detergent & Bleach Abnormality Check Point
Check the condition of Detergent & Bleach.
Step 2 ① 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.
OK
Leakage-Point
② Bleach Leakage-Point - Apply Bond to Section A-A’. - Replace the Case-Bleach(U).
③ Detergent Leakage-Point - Check if powder is mistakenly used in drawer for Liquid detergent.
Step 3 ※ Detergent & Bleach backflows out of Tub. ① 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. ② 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. ③ Check the level installation condition of product. - If the product inclines to the rear side, it is vulnerable to Detergent leakage.
- 13/37 -
Section A-A’
Tip 2-4. Tub Abnormality Check Point
Check the condition of Tub & Aquajet.
Step 1 ① Check for the water leakage phenomenon of water level hose. - Water level hose inserting part damage
② Water level hose separation or assembly omitted. ③ Re-assemble the water level hose and apply Bond. - Assemble the Clamp. Step 2
① 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. ② 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 ① 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. ② 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. - 14/37 -
Tip 2-5. Pump Connection Abnormality Check Point
Check the condition of Pump & Hose.
Step 1 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)
② 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 ① Check for the water leakage of DrainHose(o). - If water droplet forms, check for crack or tearing. - Replace the Drain-Hose(o). ② Check for the water leakage of Pump. - Check the water leakage phenomenon of Pump. - Replace the Assy of Pump-Case.
③ Check for the water leakage of Pin-Hole and binding part of drain hose.
- 15/37 -
Tip 2-6. Install & NDF Connection Abnormality Check Point
Check the condition of Install & NDF.
Step 1 ① Waste water flows back into the washer. ② 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. ③ As in photo, place the drain hose so that drain hose may not go back to the upper part of U-trap.
Step 2 ① Water drains during washing mode. ② If drain hose is installed after loosening the fixing part, then water drains continuously. ③ As in the warning label, re-install it without disassembling the drain hose fixing part. Then, explain how to use it.
Step 3 ① If water drop falls little by little even after washing mode ends,
② Explain to the customer that the water remaining in the detergent drawer drops due to impact when disassembling it.
- 16/37 -
Re-install the drain hose which flows back to the U-Trap of pipe.
#3. Symptom : Water Supply & Drain 3-1. Schematic Diagram of Repair Chassis
Project
Basic Model
Type
Top-Load
All
All
Tub With Pump / Tact Button
Check-1
Power Supply
Water Supply Fail
Check-2
Tip Code
Power-Cord breakage Fuse breakage EMI-Filter breakage Main-Harness defect
3-1
Cause 1.No power
1. Water Supply Install close to wall Water valve check Fail Cold/Hot water switched Clean foreign substance in pipe filter Valve coil resistance PBA applied voltage 2. Weight Weight sensing sensing defect reduce Motor unit constraint Load 3.Water level sensing defect
1. Detergent residue
Detergent Drawer Residue
Water level hose Punk Water level hose clogged Water level sensor wire breakage Water level frequency check If water remains If detergent remains Gel-type or highlyenriched detergent
1. Pump check
Drain Fail
3-2
3-3
3-4
#1
#2
#3
PowerEMI-Filter Harness Cord
Installatio Valve n Damage
Washing Motor
Hall Sensor
Water level hose
Water level sensor
3-5 Detergent
Nd Error check Pump-Case damage Pump Wire breakage 3-6 Drain hose clogged with foreign substance - 17/37 -
Block
Rinse
PBA
PBA
Bleach
Foreign Pump Wire brea substance damage kage clogging
Tip 3-1. No Power Abnormality Check Point
Check the condition of Power Cord/Fuse/EMI-Filter.
Step 1 ① Unit does not come on. - Measure the power of socket and check if it is rated.
② Check the Power-Cord. - Terminal deformation - Check if the exterior is corroded.
Step 2
① Check for an open fuse. - Replace the fuse if it is open - Replace it with the rated capacity. ② 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. ③ Measure the voltages of both ends of the EMIFilter. ☞Maintain the voltage of 120V – If NG, replace the wire. ☞Maintain the voltage of 120V – If OK, check Step #3. Step 3 ① Check the AC power supplied to PBA.
② Blue↔White 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.
- 18/37 -
Tip 3-2. Water Supply Fail Abnormality Check Point
Check the Water-Hose / Water Supply Valve / Install Condition.
Step 1 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. ② 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 ① Check the condition of water supply valve connection. - Check if the terminal pin is pushed back. - Check if Harness wire is broken. ② Check the exterior of valve. - The solenoid does not sit flush on the valve body. - Crack in the valve body.
③ 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 ① 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. ② 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.
- 19/37 -
Tip 3-3. Weight-Sensing Abnormality Check Point
Check the condition of Motor weight-sensing.
Step 1
① Check the water level by sensing weight with empty tub. - Normal Course: approx. 80mm - Other Course or Soil-Level : approx. 100mm
Normal course
② 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. Other course
Step 2 ① 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 U↔V↔W : 9.8±2Ω - If coil value open defect, check the terminal pin.
①
②
③
④
② 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. ③ 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
0↔1v Step 3 ① Check the Wash Motor Supply Voltage of PCB - Pin #1 / #2 / #3 of CN3 = DC 145v (GND CN1 Black) ☞ Replace the PBA
- 20/37 -
CN3 1-U 2-V 3W
Tip 3-4. Water Level Sensing Abnormality Check Point
Check the water level sensor & connection condition.
Step 1 ① If 1E error occurs in Main PBA, have it checked.
② Check if the wire of water level sensor is broken. ☞ Maintain the coil resistance at 20~24Ω. -> If O.L, replace it.
③ 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. - 02<->66 are displayed by turns. ※ How-to-read: 02<->66 => 0266 => 26.6kHz ☞ Frequency of 26.4kH : If 25.9kHz or lower, replace it. Step 2 ① 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. ② When the frequency does not rise during water supply, it is considered as water leakage phenomenon due to Tub damage. Thus, water supply stops. ③ Check if the contact between water level sensor and terminal is incomplete. Not Adjust Bolt ※ SVC Note ① Do not adjust the top part of water level sensor. ② 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.
- 21/37 -
Tip 3-5. Detergent Drawer Residue Abnormality Check Point
Check the condition of Detergent & Bleach.
Step 1 ① If water remains, ② open the Siphon-Cap of detergent drawer and fabric softener drawer and check for Burr which occurs during injection. ③ Case of Burr – see photo of phenomenon
Step 2 ① If detergent remains, ② 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
※ Caution : If Product freezes or thickens, dissolve a capful in a cup of water. Shake well before use.
Step 3 ※ Explain to the customer after SVC. ① Explain him/her to limit using high-enriched or geltype detergent.
- 22/37 -
Tip 3-6. Drain Fail Abnormality Check Point
Check the condition of Pump & Hose.
Step 1 ① Check the pump with drain fail. - Check Voltage at Pin Yellow↔Black : 120vAC ☞ Replace the Main PCB - Check Pump Coil at Yellow↔Black : 15.5Ω ☞ Replace the Wire or Pump ☞ Step #2 Wire Check
② 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 ① 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)
② 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. - 23/37 -
#4. Symptom : Error Check 4-1. Schematic Diagram of Repair ※ 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
(*WA456)
How-to
Nf
No Water Fill
① Water supply hose bent. ② Water supply valve/PBA power supply check
Nd
Will not drain
① Check the power of drain pump. ② Clean the filter of drain pump.
IE
Sensor fail
① Water Sensor ② Measure the water level frequency during stand-by.
OE
① Constant water supply from Water supply valve Water over flow ② Excessive foam from detergent for general use
LE
① Water level sensor / Water level Water Leakage hose Punk ② Tub Leakage
3E
dC
Wash Motor
Unbalance
IMAGE
① Washing Motor Wire Connection ② PBA IPM output voltage check
① Level installation check ② Check the standard for recommended use of laundry
- 24/37 -
Next Page
#4. Symptom : Error Check 4-1. Schematic Diagram of Repair ※ 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.
(* WA400WA422)
Display (Image)
Error Item
How-to
tE
Water temp.
① Sensor Wire Connection ② Measure the resistance of sensor temperature.
nf1
Water Hose Connection
① Cold/Hot water supply hoses switched.
LO
Door Will nor Unlock
① PBA Door-Lock operation check ② Measure the Door-Lock resistance.
FL
Fail to Lock
① PBA Door-Lock operation check ② Measure the Door-Lock resistance.
DS
Door is Open
① Door Open check ② Fabric jamming
AE
PBA ① Sub PBA Wire Connection Communication
E2
Button Pressed
① Tact Button Pressed ② Wire Connection
8E/8E1
MEMS Sensor
① MEMS Wire Connection ② MEMS Voltage Check
- 25/37 -
IMAGE
Tip 4-1. nF Error Check Point
Check the condition of Water-Hose.
Step 1 nF Error Check ① 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. ② 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 ① Check the condition of water supply valve connection. - Check if the terminal pin is pushed back. - Check if Harness wire is broken. ② Check the exterior of valve. - The top core of water supply valve heaves. - Crack on the Body
③ 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 ① 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. ② Check the voltage applied to both ends of water supply valve. ☞ Maintain the valve supply voltage at 120V. If NG, replace the PBA.
- 26/37 -
Tip 4-2. nd Error Check Point
Check the condition of Pump & Hose.
Step 1 nD Error ① Check the Pump with the drain fail. - Check Voltage at Pin Yellow↔Black : AC120v ☞ Replace the Main PCB - Check Pump Coil at Yellow↔Black : 15.5Ω ☞ Replace the Wire or Pump ☞ Step #2 Wire Check
② 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 ① 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)
② 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. - 27/37 -
Tip 4-3. IE / OE Error Check Point
Check the water level sensor & connection condition.
Step 1 IE Check ① If 1E error occurs in Main PBA, have it checked.
② Check the water level sensor. - Measure the coil resistance and check for wire breakage. ☞ Maintain the coil resistance at 20~24Ω -> If O.L, replace it.
③ 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. - 02<->66 are displayed by turns. ※ How-to-read: 02<->66 => 0266 => 26.6kHz ☞ If the frequency is 26.4kH : 25.9kHz or lower, replace it. Step 2 OE Check ① 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. ② The frequency does not rise during water supply, which is considered water leakage phenomenon caused by Tub damage. Thus, water supply stops. ③ Check if the water level sensor terminal contact is incomplete. ④ 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.
- 28/37 -
Not Adjust Bolt
Tip 4-4. LE Error Check Point
Check the water level sensor & the water leakage condition.
Step 1 LE Error Check ① If LE error occurs in Main PBA, have it checked. ② 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. - 02<->66 are displayed by turns. ※ How-to-read: 02<->66 => 0266 => 26.6kHz ☞ Frequency of 21~24kH : If out of range, have it replaced. Step 2 Water level hose Air leakage ① 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 ①If drain hose is inserted too deeply into drainage adjust it not to sink to water in drainage. ② Don’t 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.
- 29/37 -
Tip 4-5. 3E Error Check Point
Check the condition of Motor rotation & Hall Sensor.
Step 1 ① Check the Wash Motor Supply Voltage of PCB - Pin #1 / #2 / #3 of CN3 = AC 145v (GND CN1 Black)
☞ Replace the PBA CN3 1-U 2-V 3-W
Step 2 ① 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 U↔V↔W : 9.8±2Ω - In the case of coil value open defect, check the terminal pin. ② 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 ① 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 ② 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
0↔1v - 30/37 -
Tip 4-6. dC Error Abnormality Check Point
Check the customer usage-condition/installation for unbalance & the motor condition.
Step 1 dC Error
Salt-Water
① Tub Balancer Check - If there is no water sound inside the Balancer when checking Tub, it is defect. Thus, replace the SpinBasket. ② Unbalance-Retry phenomenon caused by moistureproof cloth - Check if moisture-proof cloth is used, and explain not to use it. : Water–Proof Sheet, Mats, clothing ③ 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 ① Check for Frame touch caused by inclined installation. - For the left and right of product, check the levelnessmeasuring apparatus at the top of Lid-T/C. - For the front and rear of product, check the levelnessmeasuring apparatus on the side of Frame. ② 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.
- 31/37 -
Tip 4-7. tE Error Abnormality Check Point
Explain the Thermistor operation.
Step 1 tE Error ① Wire connection - Check the connection of wire
② Remove 6-Pin Housing ③ Check the thermistor resistance. ※ Normal resistance : 97~98 ㏀ (10℃) 60~61 ㏀ (20℃) 39~40 ㏀ (30℃) ④ Measure the resistance of both ends of Thermistor in the room temperature of 25℃ (Green/Pink) : 47.2㏀ ☞ Replace the thermistor Step 2 ① Connect 6-Pin Housing and turn the power on. ② 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 ① Check if the cold/hot water supply hoses are switched when installed.
- 32/37 -
Tip 4-8. dS, FL, LO Error Abnormality Check Point
Check the Door / Door-Lock.
Step 1 dS Error ① If the dS Error occurs. ② If press Start with the Door open.
③ If laundry is jammed under the Door. ☞ Close the Door properly and press Start. ☞ Replace the Door-Lock
Step 2 FL Error
① Sensing error occurs due to Door-lock interference because the Door Lid-T/C shrinks in the winter. ② Remove the Rib from Lever inserting part of Door-Lid-T/C. ☞ Replace the Door Lid-T/C Rib 제거
Step LO Error ①In state of Door Unlock, Check motor resistance (Checking part : Black-Brown Wire) ※ Normal resistance : 33Ω to 46Ω between the terminals of Motor. ② 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
- 33/37 -
Tip 4-9. AE, nE Error Abnormality Check Point
Check the PBA-communication / Button.
Step 1 AE Error ① Disassemble sub PBA . ② Check the connector which connects sub PBA and main PBA on sub PBA.
☞ Replace the Sub-PCB
Step 2 nE Error ① 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
- 34/37 -
Tip 4-10. 8E, 8E1 Error Abnormality Check Point
Check the PBA-communication / Button.
Step 1 8E Error ① Main PCB all-in-one type MEMS circuit ② Check for the incomplete contact of water level sensor terminal. ☞ Replace the PBA
Step 2 8E1 Error
Check Point
① Check the condition of terminal contact to check MEMS. ② 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.
- 35/37 -
MEMS
Check MEMS-Resistance
Check PBA-Voltage
#5. Symptom : Test Mode & Circuit Diagram 5-1. Schematic Diagram of Repair Check Point
Test Mode
Check the Test Mode / Diagnostic Mode.
Power Off Status
Quick Test Mode
Power On Status
Service Mode
Quick Spin Test Mode S/W Version Check Mode Board Input Test Mode
Diagnostic Code Check Mode
Model
Quick test Quick spin mode test mode
WA400 WA422
Delay start + Pre Soak +Power Key
Spin+ Soil level+ Power key Delay start WA456 + Eco Plus +Power Key
Service S/W version Board input Diagnostic mode check mode test mode mode Delay Start Extra Rinse +Extra rinse Soil level Spin Delay Start Eco plus +Aquajet
# 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) ① Enter Quick test mode. ② Software version is displayed and turn jog-dial so that the version disappears. ③ You can check the operation of water valve, drain pump, circulation pump, heater, door lock S/W by pressing a button.
Model WA400 WA422 WA456
Key
Check part
Temp
Water valve
Spin
Drain pump
Soil level
Door lock S/W
- 36/37 -
# 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
Display
Normal Water temp. (℃)
Perm Press Water temp. (℉)
Delicates/ Quick Wash Pure Cycle Hand Wash Door status (OP:open, CL:close)
Door lock S/W status (UL:unlock LO:lock)
# 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.
- 37/37 -
Water Frequency
