JennAir JMV Code F3T1: user interface thermistor

What F3T1 means

F3T1 on JennAir over-the-range microwave hoods like the JMV9196CS and JMV8000 series tells you there may be a problem with the user interface thermistor or its wiring. That sensor tracks the temperature around the control panel. When it misreports, the control may stop cooking early or lock out heated functions, and the display shows F3T1. The code can appear after a long cook or even when the unit is idle and cool.

Common causes of F3T1

User interface thermistor has failed
Connection at the control panel is loose
Wiring to the thermistor is damaged

✓ One safe check you can try

1. Press Stop/Cancel and let the unit cool for ten minutes. 2. Make sure the area above the door and the top vent are clear of grease and stored items. 3. Power the unit down at the breaker for sixty seconds. 4. Try a short cook with a cup of water. 5. Call us if F3T1 comes back.

! Why to stop there

The thermistor is attached close to the panel electronics that we should not disturb.
A reset sometimes hides a weak sensor until the next long cook.
Rough handling of the keypad ribbons can create a new problem.
We state a price in writing beforehand and back the repair for 30 days.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Microwave codes

LOC or "L" or Padlock IconJennAir Microwave Message LOC, L or Padlock Icon: Control Lock Enabled Locked, Lock or LocJennAir Built-In Microwave Message "Locked, Lock or Loc": Control Lock On ":" or "." in displayJennAir Built-In Message ":" or "." in display: clock needs setting F8 E3JennAir Built-In Microwave Code F8 E3: one more cooling alert Sabbath, Sab, 5Ab, or 5A6JennAir Built-In Microwave Message "Sabbath, Sab, 5Ab, or 5A6": Sabbath Mode On F8 E4JennAir Built-In Microwave Code F8 E4: exhaust air sensor SEJennAir JMV Code SE: keypad problem F8E5JennAir JMV Code F8E5: exhaust air temperature sensor

F3T1F3T1 questions

What temperature is this sensor watching?

It watches the area around the user interface, not the food. Its job is to protect the panel electronics from heat. If the reading is lost, the control chooses to stop rather than risk damage.

Can steam from my cooktop trigger F3T1?

Hot air from pans below can warm the front panel area, but the code points to the sensor circuit itself. Frequent F3T1 after boiling suggests a marginal sensor, which we can test.

Is F3T1 the same as F3T2?

No. Each F3T number belongs to a different thermistor. F3T1 is the user interface one, F3T2 is the convection thermistor, so the repairs go to different spots.