F4Warning
Amana Dishwasher F4 Error Code
The relay that controls the heating element has failed, stuck open or closed.
Common causes
- Faulty relay on control board
- Wiring damage
- Control board failure
How to fix it
- Unplug dishwasher and inspect the control board for burned components.
- Check wiring harness for loose or damaged connections.
⚠ When to call a pro: If visual inspection reveals burnt relay, replace the control board; otherwise call a tech.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.