Safety first: Isolate the oven from mains and allow it to cool. Fan blades can be sharp; wear gloves.

Check fan movement: Remove the rear internal panel and try to spin the fan blade by hand. It should rotate freely without grinding noises.
Clear obstructions: Remove any loose screws, foil, or debris caught behind the fan blade.
Access motor: From the rear of the oven, remove the cover over the fan motor. Inspect for signs of overheating or oil leakage.
Test motor: Disconnect the motor and measure resistance across its terminals. An open circuit indicates a failed motor. If resistance is normal but the motor hums and does not start, the bearings may be seized and the motor should be replaced.
Check wiring: Inspect the harness from the PCB to the motor for damage or loose connectors. Repair or replace as needed.
Replace motor: Remove the fan blade fixing nut (usually reverse thread) and transfer the blade to the new motor. Refit and test.

Caple oven fan does not run in fan oven mode; oven may overheat or cook unevenly.

Possible Causes