Samsung WA484DSHASU/A1

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nwWA484

09/21/2013

Fast Track Troubleshooting

Model:

WA484DSHASU /A1

Publication # nwWA484 Creation Date 09/21/2013

Quick Test Mode

To enter press Soil, Spin & Power

simultaneously with the power off.

1. All LED’s light up and the washer

beeps as it

enters the Quick Test Mode.

2. The unit displays the software version for a

second then clears the EEprom.

3. After the displaying the software version, LCD

will display Model information. If EEEE is displayed

the PCB assembly is defective.

4. When the version is displayed, turn the Jog-Dial

so that the version disappears. Press the following

keys to test the various components

Press Temp Key to cycle through the Water Valve test

(Door does not need to lock) in this order: Cold, Bleach,

Hot, Rinse (Softener), & 3 cold valves then off.

Press Spin Key to test Circulation/Drain Pump.

Press Soil Level Key to test Water Heater

Press Signal Key to test the Door Lock/Unlock circuit

When either Test or Spin is displayed on the LCD, press

Start/Pause key to conduct the motor test.

In Test mode, you can test the clockwise and counter-

clockwise movement of the motor. However, the water

level must satisfy the heater water level (24300) to enter

Test mode.

Service Mode:

This mode allows more detailed operation tests and trouble-

shooting, to enter press Signal & Extra Rinse

simultaneously with the power on.

While in Service Mode the following tests can be performed:

Quick Spin Test = Delay Start & Temp: This accelerates

the drum motor from 0 to maximum RPM over a few

minutes. Note: Stay with the washer during this test, out of

balance detection may be bypassed.

Press the Start/Pause button during the test to hold its spinning

speed for 10 minutes before going back to Quick Spin Test

Cycle Count = Press Signal key to view times the unit was used

Soft Ware # = Press Soil key to see the software version info

Fast Time Down = Press Temp key to advance to next cycle

Fault Code Test = Press the Spin button to view the

stored fault codes – then turn Jog Dial to view error codes

(Push Start/Pause while the code is displayed to view the num-

ber of cycles since the error occurred)

Peripheral (Main PCB) input Tests

1. Select Extra Rinse. Then turn the Jog-Dial so that the Normal

LED is turned on. The Water Temperature will be displayed in

Centigrade

2. Select Extra Rinse. Then turn the Jog-Dial so that the Heavy

Duty is turned on. The water temperature will be displayed in

Fahrenheit.

3. Select Extra Rinse. Then turn the Jog-Dial so that the Perm

Press LED is turned on. The door status will be displayed (OP if

open, CL if closed).

4. Select Extra Rinse. Then turn the Jog-Dial so that the Sani-

tize LED is turned on. The door lock Switch status will be dis-

played (UL if unlocked, Lo if locked).

5. Water Frequency/Water Sensor Testing Select a cycle &

start the washer, enter Service Mode & press Extra Rinse.

Turn the Jog Dial so that the Bedding LED is turned on. Next,

press the Start/Pause Key. The Water Frequency will be dis-

played. The frequency will change as the unit fills

IMPORTANT SAFETY NOTICE – “For Technicians Only” This service data sheet is

intended for use by persons having electrical, electronic, and mechanical experience

and knowledge at a level generally considered acceptable in the appliance repair trade.

Any attempt to repair a major appliance may result in personal injury and property

damage. The manufacturer or seller cannot be responsible, nor assume any liability for

injury or damage of any kind arising from the use of this data sheet.

Continuous Run Mode:

1. Press Delay Start + Soil Level Key for 7 sec during Power On State

(Normal User Mode) .

2. Once in Continuous Run Mode, The seven segments will no longer

display “0000” and will alternate between displaying the number of cy-

cles of the completed course and the remaining time of the course.

3. The Continuous Run Mode will repeat the previous cycle until continu-

ous run mode is cancelled by pressing the same button combination for

7 sec.

SUPPORT INFORMATION

Training — Plus One http://my.plus1solutions.net/clientPortals/samsung/

Help — GSPN http://service.samsungportal.com/

Need help?

Do you have a question about the Samsung WA484DSHASU/A1 and is the answer not in the manual?

This document provides service data and troubleshooting information for the Samsung WA484DSHASU/A1 washing machine, intended for qualified technicians.

Function Description

The Samsung WA484DSHASU/A1 is a washing machine designed for various laundry needs, offering multiple wash cycles and options. It incorporates a control system that allows for detailed operation tests and troubleshooting through specific service modes.

Wash Cycles and Options: The washing machine features a control panel with a Jog-Dial and various buttons for selecting wash cycles and options.

Normal Cycles: Normal, Heavy Duty, Perm Press, Deep Clean, Towels, Bedding.
Eco Wash Cycles: Active Wear, Delicates/Hand Wash, Wool, Quick Wash.
Stain Away Cycles: Rinse+Spin.
Settings & Options: Hot, Warm, Eco Warm, Cold temperature settings; Extra High, High, Medium, Low, Light soil levels; Extra Rinse, Child Lock, Door Lock, Extra Spin, My Cycle, Garment+7.
Control Buttons: Wash, Rinse, Spin, Temp, Soil Level, Start/Pause, Pure Cycle, Delay Start, Signal.

Motor and Pump Operations: The washer utilizes a D-D (Direct Drive) motor for drum rotation and a clutch motor for engaging different wash actions. It also includes a circulation pump and a drain pump for water management. Water valves (Bleach, Cold, Hot, Rinse/Softener) control water intake.

Important Technical Specifications

Electrical Specifications:

Power Input: 120VAC (as indicated by various test procedures).
Motor Power: U, V, W phases (Red, Wht, Blu wires) connected via CN8.
Relays: RY12 (Power Relay) and RY13 (Heater Relay) control main power and heater functions.
Sensors: Water level sensor, temperature sensor, Hall sensors for motor and clutch, reed switch for door lock.

Component Connections (Main PCB):

CN1 (5vdc): Hall-B (GRY), Hall-A (BLU), GND (BLK), Clutch Hall – IC (WHT).
CN2 (Interface): Standby (S/BLU), TX (VIO), RX (BLK), Reset (BRN), 5vdc (Gry-Pnk), 12vdc (Org-Pnk), EMG (YEL), Power On (WHT), Water Level (BLU), Sub Reed (Red).
CN3 (Door Lock): Door Lock (Blk-Brn), Unlock Contact (BLU), Lock Contact (RED), Reed Switch (GRN), 5VDC (WHT).
CN4 (120vac): Bleach Valve (Gry-Blk), Cold Valve (Blu-Blk), Hot Valve (Red-Blk), Rinse (Softener) Valve (Wht-Blk), Clutch Contact (VIO), Cir. Pump (Yel-Blk), Clutch Mtr (Brn-Blk), Drain Pump (Pnk-Wht).
CN6 (AC Neutral/Common): AC Neutral (Wht), AC Line Common (Blk).
CN7 (Reactor): Reactor Connector Port (WHT).

Water Valve Resistance:

Power Off, valve resistance is from 1202Ω - 1245Ω.

Clutch Motor Resistance:

Power Off, ~2 KΩ across CN4 PIN #8 (Brn) and CN6 PIN #3 (Blk).
Violet/Black - Brown = 0Ω, Violet/Black - Black = ~2KΩ, Brown - Black = ~2KΩ.

Drain Pump Resistance:

Power Off, pump resistance is 20 Ω.

Heater Resistance:

Power Off, heater resistance is ~12Ω.

Usage Features

Quick Test Mode: This mode allows technicians to quickly verify the functionality of various components.

Activation: Press Soil, Spin, & Power simultaneously with the power off.
Indicators: All LEDs light up, washer beeps, software version displays, then EEPROM clears. LCD shows model info; "EEEE" indicates a defective PCB.
Component Tests:
- Water Valves: Press Temp Key to cycle through Cold, Bleach, Hot, Rinse (Softener), and 3 cold valves, then off.
- Circulation/Drain Pump: Press Spin Key.
- Water Heater: Press Soil Level Key.
- Door Lock/Unlock: Press Signal Key.
- Motor Test: Press Start/Pause key when "Test" or "Spin" is displayed on LCD. Requires heater water level (24300) to enter.

Continuous Run Mode:

Activation: Press Delay Start + Soil Level Key for 7 seconds during Power On State (Normal User Mode).
Display: Seven segments alternate between displaying completed cycles and remaining time.
Function: Repeats the previous cycle until cancelled by pressing the same button combination for 7 seconds.

Service Mode: This mode provides more detailed operation tests and troubleshooting.

Activation: Press Signal & Extra Rinse simultaneously with the power on.
Tests:
- Quick Spin Test: Press Delay Start & Temp. Accelerates drum motor to max RPM. Stay with washer as out-of-balance detection may be bypassed. Press Start/Pause to hold speed for 10 minutes.
- Cycle Count: Press Signal key to view usage times.
- Software #: Press Soil key to view software version.
- Fast Time Down: Press Temp key to advance to next cycle.
- Fault Code Test: Press Spin button to view stored fault codes, then turn Jog Dial to view error codes (e.g., "Pii. h diardi aus") and cycle count since error.
- Peripheral (Main PCB) Input Tests (using Extra Rinse and Jog-Dial):
  - Normal LED on: Water Temperature in Centigrade.
  - Heavy Duty LED on: Water Temperature in Fahrenheit.
  - Perm Press LED on: Door status (OP/CL).
  - Sanitize LED on: Door lock switch status (UL/Lo).
- Water Frequency/Water Sensor Testing: Select a cycle, start washer, enter Service Mode, press Extra Rinse, turn Jog Dial to Bedding LED, then press Start/Pause. Water frequency displays and changes as unit fills.

Maintenance Features

Error Codes and Troubleshooting: The manual lists various error codes (LED and Error Mode) with detailed descriptions and troubleshooting steps.

Water Level Sensor (LE, 8): Check valves, screens, solenoids, water level/pressure sensor, 120VAC to valve.
Motor Drive Error or Hall Sensor Error (3E, E3): Check motor drive connector, hall sensor (disconnected, loose, damaged), foreign objects in motor, motor damage, loose stator, overload, defective relay or PCB.
Water Supply Error (nF 3): Check wiring harness, water supply valve (clogged with foreign material), proper water supply, reversed fill hoses, water temperature (above 50°C in Wool/Lingerie), relays, replace Main PCB.
Fill Hoses Reversed (nF1): Correct Hot/Cold hose connections.
Drain Error (nd): Check for foreign material in pump/hoses, wiring harness, water pump terminal, freezing, water level drop below reset level within 30 minutes.
Power Error (2E, PF): Check operating voltage (under/over voltage), plug receptacle, connecting wires (extension cord use), momentary low voltage, Main PBA fault, momentary power failure.
Communication Error (AE): Check wire connections, terminal contacts between sub and main PBAs, disconnected wires, short-circuited sub PCB (moisture), faulty main PCB communication circuit.
Switch Error (Main Relay Error) (E2, SR): Check power switch/tact switch (stuck down), service PBA holding screws (pinching contacts), main PBA switching IC on/off error, incorrect main relay connections.
Door Error (ds): Check latch alignment.
Failed Lock (FL): Check latch damage, wiring harness to latch, door switch. Replace if faulty.
Unlock Failure (LO): Check main PBA door sensing circuit, verify Main PCB operation.
Heater Error (Hr): Short/disconnected wire to heater, tub contacting heater, frozen water, no water, temperatures above 145C, PBA relay malfunction, faulty steam heater.
Overflow Error (OE, 1E): Water level detection not working, drain not working, water valves not shutting off fully, water level sensor.
Temperature Sensor Error (tE1): Washing heater temperature sensor error, check connections.
Unbalance Error (dC): Check laundry type, reposition load, remove items.
MEMS or Harness Failure (8E): Check MEMS PCB, Main PCB & Wire-harness; MEMS sensor output (over 4.5VDC or below 0.5VDC for 5 seconds).
Foaming Detected (SUdS, Sd): Too much foaming detected. Normal operation when foaming is removed.
Clutch Motor Error (PE): Clutch motor position not detected (MICOM attempts 3 times), check windings and connector.
Clutch Assembly Hall Sensor Error (PE1): Drum shakes to determine position, 15 attempts if hall sensor not communicating with MICOM. Check hall sensor and wiring.

Physical Checks:

Leveling: Ensure the washing machine is level to the floor to prevent vibrations and shorten product lifetime.
Door Lock Assembly: Reed Switch in blue plastic, Door Lock Replaced as an assembly.
Water Valves: Softener dispensed in final rinse by "RINSE" valve.