Frigidaire
Auto Shutoff Control Failure
Warming plate stays on for too long or does not turn off automatically.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Stuck warming plate relay, Faulty auto shutoff timer circuit, Shorted control board transistor, Misprogrammed timer settings
How to Fix / Troubleshooting
Safety: Unplug and allow the unit to cool before servicing.
- 1. Confirm user settings:
- Some Frigidaire models allow adjusting the keep-warm time; verify it is set correctly.
- 2. Observe relay behavior:
- With the bottom cover removed (and following strict electrical safety), listen for the warming plate relay clicking off after the programmed time.
- If the relay never opens, it may be welded closed; replace the control board.
- 3. Test warming plate circuit:
- Ensure the thermostat is not bypassed or shorted.
- 4. Replace control board:
- If the auto shutoff function fails consistently, replace the main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Main Control PCB
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