F5
Thor Kitchen
Control Board Configuration or Relay Error
Display shows F5, oven functions may be locked out or behave erratically.
Advertisements
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.
Advertisements
Possible Causes
Corrupted EOC firmware, Failed relay on control board, Incorrect line voltage, Loose neutral or line connection at terminal block
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker. Verify power is off with a non-contact voltage tester before touching wiring.
- Check power supply: Inspect the rear terminal block where the power cord connects. Tighten any loose L1, L2, or neutral screws. Look for burned or discolored terminals and replace the terminal block if damaged.
- Verify voltage: With a multimeter and power restored (only if you are qualified), confirm 240 VAC across L1–L2 and 120 VAC from each leg to neutral. Incorrect voltage can trigger control errors.
- Reset control: Turn power off for 10 minutes to allow the EOC to fully discharge, then restore power. If F5 returns immediately, the control board is likely defective.
- Replace EOC: Remove the backguard panel, label and disconnect all harnesses from the EOC, and install a new electronic oven control board programmed for your Thor Kitchen model.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Electronic Oven Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements