The F22 error code on a Kenmore dryer indicates a failure of the exhaust outlet thermistor — a temperature sensor that monitors the air temperature leaving the dryer drum. When this sensor reads outside its expected range or fails to send a signal, the dryer displays F22 to prevent overheating.
Causes of the F22 Error
- Failed or open-circuit outlet thermistor
- Clogged dryer vent causing excessive heat buildup (which can damage the thermistor)
- Wiring fault in the thermistor circuit
- Control board fault
Troubleshooting
- Check your dryer vent immediately. A clogged vent is the most common cause of thermistor damage. Clean the vent duct thoroughly before proceeding.
- Reset the dryer by unplugging for 5 minutes.
- If F22 returns after vent cleaning and reset, the thermistor requires replacement.
Important Safety Note
A clogged dryer vent is a leading cause of house fires. If you suspect your vent is clogged, have it professionally cleaned before using the dryer again. Our technicians can inspect and clean your dryer vent as part of the repair visit.