Samsung WF438AAR/XAA Troubleshooting Manual

Fast Track TroubleshootingModel: WF438AAR/XAAPublication # nwWF438 Revision Date 11/05/2012Quick Test ModeNote: This test erases all faults and memory:To enter press Soil, Signal, & Powersimultaneously with the power off.1. All LED’s light up and the washer beeps as itenters the Quick Test Mode.2. The unit displays the software version for asecond then clears the EEprom.3. After the displaying the software version, LCDwill display Model information. If EEEE is displayedthe PCB ass’y is defective.4. When the version is displayed, turn the Jog-Dialso that the version disappears. Press the followingkeys to test the various componentsPress Temp Key to cycle through the Water Valvescircuit test (lock the door first) in this order: Pre-Wash,Bleach, Cold Main, Hot, & Steam, then off.Press Spin Key to test Door Lock/Unlock circuitPress Soil Level Key to test Circulation/Drain Pump.Press Signal Key to test the Water/Steam Heater.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 waterlevel must satisfy the heater water level (24300) to en-ter Test mode.In Spin mode, you can test the motor at a high rpm.Service Mode:This mode allows more detailed operation tests and trouble-shooting, to enter press Signal & Extra Rinsesimultaneously with the power on.While in Service Mode the following tests can be performed:Quick Spin Test = Delay Start & Silver Care: This acceler-ates the drum motor from 0 to maximum RPM over a fewminutes. Note: Stay with the washer during this test, out ofbalance detection is bypassed and the door may not lock.Press the Start/Pause button during the test to hold its spinningspeed for 10 minutes before going back to Quick Spin TestMode.Cycle Count = Press the Signal button to see how many timesthe unit was usedSoft Ware # = Press the Soil button to see the software versioninformationFast Time Down = Press the Temp button to advance to thenext cycleFault Code Test = Press the Silver Care button to view thestored 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 Tests1. Select Extra Wash. Then turn the Jog-Dial so that the ExtraRinse LED is turned on. Next, press the Start/Pause Key. TheWater Temperature will be displayed in Fahrenheit.2. Select Extra Wash. Then turn the Jog-Dial so that the ExtraSpin LED is turned on. Next, press the Start/Pause Key. Thedoor status will be displayed (OP if open, CL if closed).3. Select Extra Wash. Then turn the Jog-Dial so that the DelayStart LED is turned on. Next, press the Start/Pause Key. Thedoor lock Switch status will be displayed (UL if unlocked, Lo iflocked).4. Select Extra Wash. Then turn the Jog-Dial so that the PreWash LED is turned on. Next, press the Start/Pause Key. TheWater Frequency will be displayed.5. Select Extra Wash. Then turn the Jog-Dial so that My CycleLED is turned on. Next, press the Start/Pause Key. The AG Kitstatus will be displayed after 3 seconds. (“ㅂE” if the AG kit isabnormal. “—” if the AG Kit is working properly)IMPORTANT SAFETY NOTICE – “For Technicians Only” This service data sheet isintended for use by persons having electrical, electronic, and mechanical experienceand 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 propertydamage. The manufacturer or seller cannot be responsible, nor assume any liability forinjury or damage of any kind arising from the use of this data sheet.EEPROM Clear CheckPower off, Press Delay Start, Signal and Power Key atthe same time. Good = Good Fail = FAiLAll memory will be cleared, including Fault CodesThis should be done when a new Main PCB is installedSelecting Language1. The “Select the Language”message appears.2. Turn the Jog Dial to selectlanguage3. Press Signal button to select