Summary of the content on the page No. 1
WASHING MACHINE
Technical Information
Models : WA456*
WA422*
WA400*
• Due to possibility of personal injury or property damage, always contact an authorized
technician for servicing or repair of this unit.
• Refer to Service Manual for detailed installation, operating, testing, troubleshooting, and
disassembly instructions.
CAUTION
All safety information must be followed as provided in Service Manual.
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to
Summary of the content on the page No. 2
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. GENERAL ERROR FUNCTION Error Code NO Description Corrective Action (Diagnostic Code Error Image) The water level fails to drop below Go to “ Will Not Drain” 1 the Reset Water Level within 30 Troubleshooting Section. minutes. Go to “ Will Not Unlock” 2 Door fails to Unlock After 7 attempts. Troubleshooting Section. When t
Summary of the content on the page No. 3
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Error Code NO Description Corrective Action (Diagnostic Code Error Image) MICOM is attempting to drive the motor but is not getting any response signals Evaluate wire harness for loose or 11 from the hall sensor. Visual check shows unhooked connections. Go to “ motor is not running. (Locked, Defective Quick Test Mode” a
Summary of the content on the page No. 4
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. TEST MODE Test Mode: Each Test Mode is as follows in the coming pages. The test modes are modes unable to get an access once the washing cycle has started due to safety resons. Quick Test Mode WA422*/WA400* Definition of Quick Test Mode: - Check operation of all LED’s (Verify faulty LED). - Check model and software versi
Summary of the content on the page No. 5
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Quick Test Mode: 1. All LED’s light up and it sends out Beep Sound when it enters into the Quick Test Mode. (Including 7-Segment) 2. Displays software version for a sec and Clear EEPROM. 3. When the version is displayed, turn the Jog-Dial so that the version disappears. Press the following keys to test the various compo
Summary of the content on the page No. 6
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Continuous Run Mode Definition of Continuous Run Mode: - Will continuously repeat the current cycle until the Continuous Run Mode is cancelled. How to Enter: - Press Delay Start + Soil Level Key together for 5 sec. Continuous Run Mode: 1. Press Delay Start + Soil Level Key for 5 sec during Power On State (Normal User Mode)
Summary of the content on the page No. 7
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Service Mode TM Delay Start and AquaJet (WA456*)/ Extra Rinse(WA422*/WA400*) Service Mode: 1. The washer must be on to go into the Service Mode. 2. The motor speed will be displayed when started (It displays 0 when the motor does not spin). 3. The present state of the machine will not be changed. (i.e., the current cycle
Summary of the content on the page No. 8
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Cycle Count Check Mode Definition of Cycle Count Check Mode: - Cycle Count Check Mode is to tally up the number of washings. How to Enter: - To enter the Cycle Count Check Mode, press the Pre Soak Key during Service Mode. Cycle Count Check Mode: 1. Activate the Service Mode in advance. 2. When the Pre Soak key is pressed, t
Summary of the content on the page No. 9
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Fast Time Down Test Mode Definition of Fast Time Down Test Mode: - Fast Time Down Test Mode is to forward the program to the next cycle stage. How to Enter: - To enter the Fast Time Down Test Mode, press the Temp. key during Service Mode. Fast Time Down Test Mode: 1. Activate the Service Mode in advance. 2. To forward the p
Summary of the content on the page No. 10
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Diagnostic Code Check Mode Service Mode Diagnostic Code Spin Definition of Diagnostic Code Check Mode: - Diagnostic Code Check Mode is to bring up the stored diagnostic codes (refere codes for service technicians). How to Enter: - To enter the Diagnostic Code Check Mode with code “d” flashing, press the Spin key during Ser
Summary of the content on the page No. 11
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Demo Mode Eco Plus(WA456*) + Pre Soak Pre Soak + Extra Rinse(WA422*/WA400*) 3sec While a cycle is not running - Demo mode is entered when the Eco Plus(WA456*)+Pre Soak/Pre Soak + Extra Rinse(WA422*/ WA400*) buttons are held down for five (5) seconds simultaneously in the power on state. - When entering Demo mode, the buzzer
Summary of the content on the page No. 12
ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. TROUBLE DIAGNOSIS - As the micom wash machine is configured of the complicate structure, there might be the service call. Below information is prepared for exact trouble diagnosis and suitable repair guide. Caution for the Repair and Replacement Please follow below instruction for the trouble diagnosis and parts replacement
Summary of the content on the page No. 13
TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. TROUBLE DIAGNOSIS Will Not Start • Plug the unit into the wall outlet. Check for proper voltage. • Check fuse or reset circuit breaker. • Push any key to turn on the washer and press the Start/Pause key to run the washer. • Close door and push the Start/Pause key to run the washer. • Check if washer is in a pause, soak or suds pro
Summary of the content on the page No. 14
TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. TROUBLE DIAGNOSIS No Water Fill • Perform Quick Test Mode. Check all of Water Valves visually. (Cold Water Valve, Bleach Water Valve, Softener dispenses using Cold & Bleach Water Valve, and Hot Water Valve.) • Check if water taps are turned on fully. • Check Water Valves and Water Level Sensor (Refer to PCB Connector Check) • C
Summary of the content on the page No. 15
TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. TROUBLE DIAGNOSIS No Key Operation • Option and Function buttons respond differently according to each cycle. • Child Lock is being activated. To exit, hold down Spin level key and soil level key simultaneously until it sends out a beeping sound. • When “End“ illuminates on the display, only Power button works. Press Power button a
Summary of the content on the page No. 16
TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. PROBLEM CHECKING AND METHOD OF PCB(Model : WA456*) - If you plug in the power cord and turn Power S/W on, memorized data is displayed. If any data is not displayed, check the followings. CN8 CN12 CN7 Micom writing Thermistor Check Water Sensor Check Check Resistance at Pin #9 and #7 of CN8 Check Frequency at Pin #11 and #7 of CN8 Te
Summary of the content on the page No. 17
TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. PROBLEM CHECKING AND METHOD OF PCB(Model : WA422*/WA400*) - If you plug in the power cord and turn Power S/W on, memorized data is displayed. If any data is not displayed, check the followings. Thermistor Check Water Sensor Check Check Resistance at Pin #9 and #7 of CN8 Check Frequency at Pin #11 and #7 of CN8 Tester Check = 47 ㏀ Res
Summary of the content on the page No. 18
WIRING DIAGRAM WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Model : WA456*/WA422*/WA400* 18
Summary of the content on the page No. 19
WATER FLOW DIAGRAM WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Model : WA456* C H O O L T D B W B B L H R L L A I E U U C T D E E K E MIST BLEACH Model : WA422*/WA400* C H O O L T D B W B L H R L A I E U C T D E K E MIST 19
Summary of the content on the page No. 20
