F5
Stoves Control Board Relay or Watchdog Failure

Control panel beeps and shows F5; oven functions may be locked out.

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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

Internal failure of electronic oven control board, Power surge damage, Loose neutral or line connection at control board

How to Fix / Troubleshooting

Safety first: Disconnect power at the breaker. Capacitors on the control board can retain charge; avoid touching components unnecessarily.

Steps to check:

  • Power reset: Turn off the breaker for 10 minutes, then restore power. If F5 returns immediately, suspect the EOC.
  • Inspect wiring: Remove the backguard panel and verify all wire harness connectors to the EOC are fully seated and not heat-damaged.
  • Check for visible damage: Look for burnt traces, cracked solder joints, or bulging components on the EOC. Any such damage indicates the board should be replaced.
  • Replace EOC: Label each wire, then transfer them one by one to the new board. Mount the new control and reassemble the backguard.

Note: If the error appeared after a lightning storm or outage, consider using a surge protector for the range circuit (where code-permitted) or consult an electrician.

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Repair Difficulty

Hard 4/5

Required Part

Electronic Oven Control (EOC) Board
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