Microwave shows E12 and may shut down unexpectedly during operation.

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 cooling fan motor, Obstructed fan blades, Faulty fan speed sensor (if equipped), Loose fan wiring connector

Safety first: Disconnect power before any inspection.

Basic checks:

Start a short cook cycle and listen for the cooling fan. If you do not hear airflow from the top or rear vents, the fan may not be running.
Check for obstructions around the exterior vents that could restrict airflow.

If fan noise is abnormal or absent:

The internal cooling fan motor or its wiring is likely faulty.
Fan replacement requires removing the outer cabinet and working near high-voltage components; this should be done by a professional.

Professional Required 5/5

Cooling Fan Motor

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