Grundig Internal Communication Error (Display to Power Board)

Grundig oven shows F8 and will not start a cooking program.

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

Loose harness between display and power board, Oxidized connectors, Faulty display PCB, Faulty power/control PCB

Safety first: Isolate from mains before removing the top panel or control fascia.

Power cycle: Switch off at the breaker for 10 minutes, then restore power.
Check for moisture: If steam has entered the control area, allow several hours of drying with power disconnected.
Professional service: A technician should inspect and reseat the wiring harness between the display and main control, and replace the faulty board if needed.

Professional Required 5/5

Electronic Oven Control Board or Display PCB

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