Microwave over-the-range exhaust fan or hood light does not work, but microwave cooking is normal.

Safety: Unplug the microwave or switch off the circuit breaker before replacing bulbs or accessing the fan.

Steps:

• Replace bulb: For hood lights, remove the access cover (usually on the underside), replace with the correct wattage bulb as specified in the manual.
• Check fan settings: Ensure the fan is not set to OFF or AUTO modes that may prevent it from running.
• Filter cleaning: Remove and clean grease filters; heavy grease can strain the fan.

If the fan still does not run or hums loudly: The fan motor or control relay may be faulty and should be serviced by a technician.