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Hudson WA400 Repair Manual

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HA Repair Guide
Top-Load Washer
Hudson-PJT
WA400/422/456
- 1/39 -

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Summary of Contents for Hudson WA400

  • Page 1 HA Repair Guide Top-Load Washer Hudson-PJT WA400/422/456 - 1/39 -...
  • Page 2 Hudson-PJT Repair Guide [ WA400/422/456] Vibration • Vibration & Noise • Noise Leakage • Water Leakage Improper • Water Supply Operation • No Power Power & • Error mode Error • Test mode / Diagnosis Appendix • Circuit Diagram / PBA...
  • Page 3 #1. Symptom : Vibration & Noise 1-1. Schematic Diagram of Repair Chassis Project Basic Model Type Top-Load Hudson WA400/422/456 Tub With Pump / Tact Button Block Check-1 Cause Check-2 Code 1.Spin-basket defect  Spin friction abrasion Moisture- Spin- Spin-Nut  Concentricity Check (4mm↓) proof ...
  • Page 4 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 &...
  • Page 5 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.
  • Page 6 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.
  • Page 7 Tip 1-4. Pump-Drain Abnormality Check Point Check the condition of Pump-Drain. Step 1 Mechanical Friction Noise ① 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 ①...
  • Page 8 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 ① ② motor. - Separate the Cover-Panel from product. - Separate the 9Pin housing to measure the Female terminal.
  • Page 9 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.
  • Page 10 #2. Symptom : Water Leakage 2-1. Schematic Diagram of Repair Chassis Project Basic Model Type Top-Load Hudson WA400/422/456 Tub With Pump / Tact Button Block Cause Check-1 Check-2 Code  Tool over-connection 1. Water Supply loose Hose Connection  Packing omitted ...
  • Page 11 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.
  • Page 12 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.
  • Page 13 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.
  • Page 14 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.
  • Page 15 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...
  • Page 16 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.
  • Page 17 #3. Symptom : Water Supply & Drain 3-1. Schematic Diagram of Repair Chassis Project Basic Model Type Top-Load Hudson WA400/422/456 Tub With Pump / Tact Button Block Cause Check-1 Check-2 Code  Power-Cord 1.No power breakage Power Power-  Fuse breakage...
  • Page 18 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.
  • Page 19 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.
  • Page 20 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...
  • Page 21 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. ☞...
  • Page 22 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...
  • Page 23 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 ☞...
  • Page 24 #4. Symptom : Error Check 4-1. Schematic Diagram of Repair (*WA456) ※ 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”...
  • Page 25 #4. Symptom : Error Check 4-1. Schematic Diagram of Repair ※ Error Mode Check (* WA400WA422) 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”...
  • Page 26 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.
  • Page 27 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 ☞...
  • Page 28 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.
  • Page 29 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.
  • Page 30 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) ☞...
  • Page 31 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 Spin- Basket.
  • Page 32 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 ㏀...
  • Page 33 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. ☞...
  • Page 34 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...
  • Page 35 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...
  • Page 36 S/W version Board input Diagnostic Model mode test mode mode check mode test mode mode Delay Delay start Start WA400 + Pre Soak Extra Rinse WA422 +Extra Spin+ +Power Key rinse Soil level+ Soil level Spin Power key Delay start...

  • Page 37: Hand Wash

    # 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.
  • Page 38 Tip 5-2. Appendix Check Point Check the Circuit Diagram / PBA. Next Page - 38/39 -...
  • Page 39 Hall Sensor Check Water Valves Check Check Voltage at Pin #4 and #3 of CN9 Check Voltage at Pin #3 of CN1 and Pin Tester Check = DC0.6V #1,2,3,4 of CN4 Check Voltage at Pin #4 and #2 of CN9 When Valves operates = AC 120V Tester Check = DC0.6V Clutch-Motor...

This manual is also suitable for:

Wa4220Wa456