E14
Thermador
Cooling Fan / Airflow Error
Microwave displays E14 and will not start; sometimes occurs after a long cook cycle.
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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.
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Possible Causes
Failed internal cooling fan motor,Blocked air intake or exhaust vents,Loose fan wiring,Obstructed fan blade
How to Fix / Troubleshooting
Safety first: Disconnect power before servicing.
- Step 1 – Check external vents: Ensure that cabinet cutouts and trim kit vents for the Thermador microwave are not blocked by items or dust buildup.
- Step 2 – Listen for fan: During operation, you should hear the internal cooling fan. If it is silent or unusually noisy, suspect a fan issue.
- Step 3 – Access fan (qualified persons): Remove the outer cover. Locate the cooling fan assembly, typically near the magnetron and control board.
- Step 4 – Inspect and clean: Remove any debris from the fan blades. Check that the fan spins freely by hand.
- Step 5 – Test fan motor: Use a multimeter to check the fan motor windings for continuity. Replace the fan motor if open or seized.
Warning: Operating the microwave with a failed cooling fan can overheat and damage internal components.
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Repair Difficulty
Hard
4/5
Required Part
Cooling Fan Motor
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