How to Fix / Troubleshooting

Safety first: If the cabinet is too hot to touch comfortably, stop using the microwave and unplug it.

Check clearances: Verify that the microwave has the minimum clearances specified in the Danby manual on all sides and top. Move it if necessary.
Clean vents: Vacuum dust and debris from all exterior vents. For over-the-range units, clean grease filters thoroughly.
Cooling fan check: During operation, place your hand near the exhaust vents to feel for airflow. Lack of airflow suggests a failed fan motor.
Usage pattern: Avoid running the microwave continuously for long periods. Allow cool-down time between long cycles.
Next step: If overheating persists with proper ventilation, the cooling fan or internal components may be failing. Contact a technician.

Microwave exterior (top or sides) becomes excessively hot to the touch during normal use.

Possible Causes