F5
Montpellier
Oven Control Board Relay or Triac Fault
Oven or range display shows F5 and beeps; some functions disabled.
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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 or burnt relay contacts, Shorted triac on PCB, Overheated control board, Power surge damage
How to Fix / Troubleshooting
Safety first: Turn off power at the mains. Control board work involves live circuits and should be done by a qualified technician.
- Reset control: Isolate for 5–10 minutes and restore power. If F5 returns immediately, internal damage is likely.
- Check for burning smell: Remove the control panel (with power off) and inspect the PCB for burnt areas or cracked solder joints.
- Do not bypass relays: Never attempt to bridge or bypass failed relays; this is unsafe and can cause fire.
- Replace EOC: If a relay or triac has failed, replace the entire electronic oven control with the correct Montpellier part.
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Repair Difficulty
Professional Required
5/5
Required Part
Electronic Oven Control (EOC)
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