Grundig Power Relay / Triac Fault

Grundig oven shows F9 and may trip the breaker or refuse to heat.

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.

Possible Causes

Shorted power relay on control board, Triac failure, Burned PCB tracks, Power surge damage

Safety first: This is a high‑voltage fault. Disconnect the range from mains immediately and do not use it until inspected.

Do not reset repeatedly: Repeatedly resetting a tripping breaker can be dangerous.
Visual inspection (qualified): A technician can remove the control board and inspect for burned components or tracks.
Replace control board: In most cases, the entire control board must be replaced with a Grundig‑approved part.

Professional Required 5/5

Electronic Oven Control Board

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