Emerson Exhaust Fan Motor or Control Failure

Microwave exhaust fan does not run or runs only at one speed on an over-the-range model.

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

Failed exhaust fan motor, Defective fan speed switch or keypad, Faulty fan relay on control board, Blocked fan blades

Safety first: Unplug the microwave.

Mechanical check:

Access the exhaust fan area and inspect the fan blades for obstructions or grease buildup; clean as needed.
Spin the fan by hand; if stiff or seized, replace the motor.

Electrical check:

If the fan runs on some speeds but not others, the control or speed switch may be faulty.

Fan motor or control replacement on over-the-range units often requires removing the microwave from the wall; consider professional service.

Hard 4/5

Exhaust Fan Motor

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