Problem: Heater relay stuck closed or failed open
How to Fix Dishwasher Error
- Disconnect power and access control board.
- Test heater relay contacts for proper operation.
- Check relay coil resistance (should be 100-200 ohms).
- Inspect relay contacts for welding or carbon buildup.
- Test voltage to heating element when relay should be off.
- Replace control board if relay is faulty.
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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