F3T1 refers to the user interface thermistor, or the wiring to it, on an over-the-range JennAir microwave.
Model compatibility: JennAir reuses codes across series and model years, so F3T1 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
Possible problem with the user interface thermistor or the associated wiring.
Of the thermistor codes in JennAir’s over-the-range list, F3T1 is the one tied to the control panel side: the user interface thermistor, plus the wiring going to it.
Limits of the code
You learn which sensor the control is unhappy with. You do not learn the temperature involved, the cause, or whether the panel is damaged, because JennAir publishes none of that. Reading more into the code goes beyond the article.
The listed procedure
Reset the power at the breaker: off, sixty seconds.
Back on.
Watch for one minute to see if the code displays again.
Verify that the oven operates.
After these the article says you may need assistance from a qualified technician.
Value of the reset
Either result helps. A code that stays away can be reported as a one-time event, and one that returns immediately can be reported as such with confidence.
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 JennAir appliance?
Book a specialist visit for a clear estimate and approval before any repair.
