Oven cooling fan keeps running after the oven is off (or never runs)

Electric and many gas ranges and wall ovens have a cooling fan that protects the controls, door and cabinetry; it keeps running after the oven is off until the controls area cools, and cannot be switched off. Running for a while after a long or hot bake is normal; running with the oven cold, starting at power-up or never stopping points to a fan thermostat stuck closed, a welded relay, a bad temperature sensor reading or a control fault. A fan that never runs is a safety issue because the controls overheat.

Cross-checked ~60 min moderateBrands: All

Before you start

Turn the breaker off (or unplug) and let the oven cool before removing panels; the fan and its wiring sit next to hot surfaces and carry line voltage
Live voltage checks at the board are for trained techs only
Gas ranges: the cooling fan and its controls are electrical parts; do not touch the gas valve, regulator or burner gas parts (licensed gas technician only)
A cooling fan that never runs lets the controls overheat: stop using the oven until it is repaired

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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