F1 on GE microwave ovens, and on 120 volt Advantium models, reports an open thermal sensor caused by excessive heat in the cavity.
Model compatibility: GE reuses codes across series and model years, so F1 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Open thermal sensor, caused by excessive heat in the microwave cavity.
F1 is an open thermal sensor fault, brought on by excessive heat inside the microwave cavity. GE lists it for all microwave ovens and for the 120 volt Advantium.
What GE advises
For microwave ovens, the support article says a trained service technician should be called when the control displays a fault code like this one. On a 120 volt Advantium you may first try to clear it yourself:
Press Clear/Off or Cancel.
Program the control again.
If the code shows again, disconnect power to the oven for a minute or two.
Restore power and program the cooking function once more.
Compare with the other thermal sensor code
F2 is the shorted version of a thermal sensor fault. A touch pad problem shows up as F3.
GE microwave service, Los Angeles
Los Angeles residents can phone (310) 620-9683 about an F1. Keep the model number nearby and note whether the oven is an Advantium. Further information sits on the microwave repair page.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your GE appliance?
Book a specialist visit for a clear estimate and approval before any repair.
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