F5
Magic Chef
Control relay or watchdog failure
Magic Chef oven displays F5 and may not start or may shut down mid-cycle.
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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 relay on EOC board, Internal EOC logic fault, Power surge damage to control
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before removing the control panel.
- Power reset: Turn off the breaker for 10 minutes to discharge the control. Restore power and test. If F5 returns immediately, the control is likely faulty.
- Inspect control board: Remove the back cover of the control panel to expose the EOC. Look for burnt spots, cracked solder joints, or melted relay cases.
- Check wiring connections: Ensure all harness connectors to the EOC are fully seated and not heat-damaged.
- Replace EOC: In most cases, F5 on Magic Chef ovens indicates a failed EOC. Replace the electronic oven control (clock/timer) board with the correct part number for your model.
When to call a technician: If you see extensive board damage or are not comfortable handling electronic boards, have a technician perform the replacement.
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Repair Difficulty
Hard
4/5
Required Part
Electronic Oven Control (EOC) Board
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