Problem: Main Control Board (Power Supply)
How to Fix Dishwasher Error
- Disconnect power at circuit breaker.
- Remove control panel cover and lower access panel.
- Document all wire connections with photos and written labels.
- Disconnect all wire harnesses from both control boards (main and interface).
- Remove mounting screws from both boards (8 total).
- Carefully remove old boards.
- Install new control boards in proper locations, ensuring correct orientation.
- Reconnect all wire harnesses exactly as documented – triple-check each connection against photos.
- Secure mounting screws to 6 inch-pounds.
- Reinstall panels.
- Restore power and enter service mode to initialize new boards (press Hi-Temp, Air Dry, Hi-Temp, Air Dry).
- Run complete diagnostic cycle and clear error codes.
- Test all cycle functions thoroughly with water to verify proper operation.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
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