F5
Frigidaire
Control board or relay board failure
Oven displays F5 and may not respond to keypad inputs.
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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
Failed electronic oven control (EOC), Stuck relay on control board, Internal control board short, Power surge damage
How to Fix / Troubleshooting
Safety First: Disconnect power at the breaker before removing the control panel.
- Power cycle: Turn off the breaker for 5–10 minutes, then restore power. If F5 returns immediately, the fault is likely permanent.
- Inspect control board: Remove the rear cover of the control panel. Look for burned spots, bulging capacitors, or damaged traces on the EOC.
- Check connectors: Ensure all harness connectors to the EOC and any separate relay board are fully seated and not heat-damaged.
- Replace control: If visible damage is present or the error persists after reseating connectors, replace the EOC (and relay board if separate on your Frigidaire model).
Because this involves high-voltage switching relays, many homeowners prefer a professional for this repair.
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Repair Difficulty
Hard
4/5
Required Part
Electronic Oven Control (EOC)
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