Model reference

LG WM3988H*A

Name: LG WM3988H*A
Brand: LG

Washer

1 document11 error codes2 service modes

Available documentation

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Door open error — door not fully

From Service Manual 252180, p.32:

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

Test Mode["Washer must be empty and off.","Press and hold SPIN SPEED and SOIL LEVEL buttons…
Test Mode Sensor Display Shortcuts["Enter Test Mode as described above.","PREWASH + CUSTOM

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

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