Exhaust thermistor error — dryer exhaust temperature sensor not reading correctly
The F3E2 error on the Maytag MED5630HW indicates exhaust thermistor error — dryer exhaust temperature sensor not reading correctly. This typically occurs due to exhaust thermistor component has failed — reading shorted or open circuit. A qualified technician can usually diagnose this in 15–25 min, but the steps below will help you understand the issue.
Safety Warning
This is a high-severity error. Unplug the appliance immediately and assess the situation before attempting any repair.
Safety Warning
This repair is recommended for certified technicians only. The diagnostic steps below can help you understand the issue before calling for service.
Common Causes of F3E2
- 1Exhaust thermistor component has failed — reading shorted or open circuit
- 2Wiring connecting the thermistor to the control board is damaged or disconnected
- 3Lint buildup around the thermistor skewing temperature readings
- 4Control board thermistor input circuit malfunction
How to Fix F3E2
- 1
Step 1
Cancel the cycle and unplug the dryer from the wall outlet
- 2
Step 2
Clean the lint screen and ensure the external vent duct is not blocked
- 3
Step 3
Excessive lint restriction can cause erratic thermistor readings from thermal stress
- 4
Step 4
After cleaning the vent system, restore power and run a short medium heat cycle
- 5
Step 5
If F3E2 returns, the exhaust thermistor needs to be tested with a multimeter
- 6
Step 6
Call a technician to test resistance at the thermistor terminals — a failed thermistor is an inexpensive part but requires accessing the back of the dryer
Tools Needed
When to Call a Technician
F3E2 returns after vent cleaning — thermistor or control board input circuit needs professional diagnosis and replacement
Frequently Asked Questions
Common questions about Maytag F3E2 error
The F3E2 error on the Maytag MED5630HW indicates the exhaust thermistor — the sensor that monitors exhaust air temperature through the dryer — is sending a reading outside of the expected range. This can be caused by a restricted vent duct producing heat buildup, or by the thermistor component itself failing. Cleaning the vent system is the first step to take.
When the dryer shows F3E2 due to a sensor fault, it will typically stop the cycle to prevent overheating, which is a safety feature. However, a blocked vent duct — one of the causes of F3E2 — is a genuine fire risk. Always keep the exterior dryer vent clear of lint and ensure the duct run is not kinked or crushed. Clean the duct annually.
Was this guide helpful?
Help us improve our repair guides