F3T2 on a JennAir over-the-range microwave refers to the convection thermistor or its wiring.
Model compatibility: JennAir reuses codes across series and model years, so F3T2 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 convection thermistor or the associated wiring.
The code F3T2 points JennAir over-the-range owners to the convection thermistor and its wiring. In one place the article prints it as F3.t2, with a dot, so both spellings refer to the same entry.
At a glance
Cycle the power. When the code comes back, the next call is to a technician.
Background
Convection cooking moves heated air around the food, and a thermistor on that side of the appliance reports a temperature to the control. JennAir says there may be a problem with that thermistor or the wiring. No symptom and no cause are given, which leaves no further owner checks.
The reset
Switch off the breaker(s) for one minute.
Switch the breaker(s) on again.
Watch the oven for one minute for the code.
Confirm the oven operates.
JennAir then states that you may need assistance from a qualified technician. It gives no advice on cleaning, airflow or placement.
Dotted or not
The F3.t2 form is the same fault as F3T2 in the article. Say the code the way it looks on your display, and mention the alternative spelling if you are unsure.
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.
