Written by
Maren Coleman Appliance Care EditorPublished October 29, 2026
VERIFIED
Error codeF3T3
ApplianceMicrowave
The part behind F3T3
Whirlpool’s help article links F3T3 to the Hood Temperature Thermistor and the wiring attached to it. The article is written for over-the-range microwaves.
Reset it in four moves
Move
Action
Power off
Break power at the breaker or at the plug and let one (1) minute pass.
Power on
Restore the breaker or plug the unit in.
Watch
Keep an eye on the display for one (1) minute for F3T3.
Verify
Make sure the microwave is running again.
Should F3T3 keep returning, a qualified technician is the right person to look at it.
A Whirlpool microwave in San Francisco or elsewhere in the Bay Area can be booked through Whirlpool microwave repair, or at (415) 687-4102. Keep the F3T3 code and model number close, and say what you tried.
Model compatibility: Whirlpool reuses codes across series and model years, so F3T3 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
F3T3 means the Hood Temperature Thermistor or its wiring may have a problem.
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 Whirlpool appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Whirlpool WMH32519HZ over-the-range steam microwave repair in San Francisco: no heat, dead keypad, weak vent fan, light out, humidity sensor and overheating…
Whirlpool WML75011HZ low-profile over-the-range microwave repair in San Francisco: no heat, dead keypad, turntable trouble, weak fan and sensor error codes.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Whirlpool appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
