Microwave shows E10 and the cooling fan runs continuously or not at all.
Safety Warning
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
How to Fix / Troubleshooting
Safety: Unplug the microwave before inspection.
Checks:
- 1. Listen for fan operation: During a cook cycle, you should hear the cooling fan. If silent or unusually loud, there may be a problem.
- 2. Inspect vents: Look through the rear or top vents to see if the fan is spinning when cooking. Do not insert objects into the vents.
- 3. Internal inspection (for DIYers): Remove the outer cover (after unplugging). Check that the fan blades are not obstructed by wiring or debris and that the motor spins freely by hand.
- 4. Wiring: Ensure the fan motor connectors are firmly seated.
If the fan motor is seized or has no continuity, replace it. If the fan runs constantly even when the unit is idle, the control board relay may be stuck and the board will need replacement.
Repair Difficulty
Required Part
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