Model reference

LG WM0742HWA

Name: LG WM0742HWA
Brand: LG

Washer

3 documents8 error codes5 service modes

Available documentation

Service Bulletin - Replacement of Defective Cold Water Valve and Inlet Hose3 pg
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Door error - the door lock/switch

From Service Manual 188600, p.12:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure door lock assembly resistance across PTC terminals. Expected: ~200 ohms cold.

3.Inspect strike and latch alignment. A misaligned strike prevents the switch stack from closing.

Part 6601ER1004C

Door lock assembly

CodeMeaning

Sensor Reading Mode - Drum RPM["During operation, simultaneously press and hold SPIN SPEED and CUSTOM buttons."]
Sensor Reading Mode - Steam Generator Temperature["During operation, simultaneously press and hold PREWASH and CUSTOM buttons."]
Sensor Reading Mode - Tub Water Temperature["During operation, simultaneously press and hold WASH/RINSE and CUSTOM buttons."]
Sensor Reading Mode - Water Level Frequency["During operation, simultaneously press and hold SOIL LEVEL and CUSTOM buttons."]
Test Mode["Washer must be empty and off.","Press and hold SPIN SPEED and SOIL LEVEL buttons…

Full entry steps, exit procedures, and test sequences are available in Max.

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