Breville Cooling Fan Overrun / Thermostat Control

Microwave fan continues to run for a long time after cooking has finished.

Advertisements

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.

Advertisements

Possible Causes

High internal temperature triggering fan thermostat, Blocked vents causing slow cooling, Stuck fan relay on control board, Faulty temperature sensor

How to Fix / Troubleshooting

Safety: It is generally safe for the fan to run after cooking; this protects internal components.

User-level steps:

  • 1. Allow time: After heavy or long cooking, allow several minutes for the fan to shut off automatically.
  • 2. Improve ventilation: Ensure vents are clear and the microwave has proper clearance.
  • 3. Power reset: If the fan runs indefinitely, unplug the microwave for 10 minutes, then plug back in and observe behavior.

If the fan runs continuously even when the unit is cool, the control board fan relay or temperature sensor may be faulty and should be serviced by a technician.

Advertisements

Repair Difficulty

Medium 3/5

Required Part

Fan Control Circuit on Main Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements