Fisher & Paykel Overheating / Thermal Cut-out Cycling

Microwave runs but stops partway through the set time and may restart after cooling.

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

Blocked vents causing overheating, Failing cooling fan motor, Weak thermal cut-out opening prematurely, Magnetron overheating

Safety first: Unplug the microwave and allow it to cool before inspection.

Check ventilation: Ensure adequate clearance around the microwave and that vents are not blocked.
Clean filters and vents: Remove and clean grease filters; vacuum dust from vents.
Verify fan operation: During operation, listen for the cooling fan. If it is not running or is very weak, test and replace the fan motor.
Inspect thermal cut-outs: Test thermal cut-outs for proper operation. Replace any that are opening at too low a temperature (per service specs).

Hard 4/5

Cooling Fan Motor

Check Price on Amazon

We may earn a commission from links on this page.