Wolf Overheating – Thermal Cutoff Opening

Microwave runs for a few seconds then shuts off completely, sometimes resuming after cooling.

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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

Blocked ventilation, Failed cooling fan motor, Grease buildup restricting airflow, Weak thermal cutoff opening prematurely

How to Fix / Troubleshooting

Safety first: Unplug the microwave and allow it to cool for at least 30 minutes.

Ventilation checks:

  • Ensure the microwave has the clearances specified in the Wolf installation manual on all sides, top, and rear.
  • Inspect and clean exterior vents with a vacuum or soft brush to remove dust and grease.
  • Clean the interior cavity, especially around vent openings, to remove grease buildup.

Operational check:

  • After cooling and cleaning, run the unit with a cup of water on a lower power setting and listen for the cooling fan.

If the unit still shuts off quickly:

  • The cooling fan or thermal cutoff may be failing and should be tested and replaced by a Wolf technician.
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Repair Difficulty

Hard 4/5

Required Part

Thermal Cutoff
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