Whirlpool Dryer Error Code F22 — What It Means
The Whirlpool dryer error code F22 typically signals a problem in the dryer’s heating or temperature sensing system. When the control board detects abnormal temperature readings, a broken sensor, an open thermal fuse, or an issue with the heating circuit, it will display F22 to alert the user. This can cause longer drying times, garments that remain damp, frequent cycle interruptions, or in some cases overheating and safety risks if a failing component causes inconsistent control of the heater. Understanding the underlying causes and impacts helps you troubleshoot safely and either make a simple fix or call a professional when required.
Common causes
- Faulty moisture sensor or moisture sensor bars (incorrect dryness detection)
- Defective thermistor or temperature sensor (open/short circuit)
- Blown thermal fuse (safety cutoff due to overheating)
- Open or damaged heating element
- High-limit thermostat or cycling thermostat failure
- Malfunctioning electronic control board or relay that controls the heater
- Wiring harness issues: loose connectors, burnt wires, or corroded contacts
- Restricted venting or clogged lint trap causing high temperatures or long cycles
- Door switch or interlock problems preventing proper sensor readings
Troubleshooting steps
- Power cycle the dryer: Unplug the dryer or switch off the circuit breaker for 1–2 minutes, then restore power and try a test cycle. This clears some transient errors.
- Check the lint filter and exhaust vent: Remove lint, check the cabinet vent path and exterior vent hood. Restricted airflow can cause overheating or long-dry complaints that trigger code responses.
- Inspect the vent duct: Disconnect the vent and run the dryer briefly (monitor carefully). If drying improves or error clears, clean or replace the vent hose and exterior vent cover.
- Visual wiring inspection: With power off, open the rear panel and inspect wires to the heating element, fuses, thermostats, and control board for burns, loose splices, or disconnected harnesses.
- Test the thermal fuse: Use a multimeter (continuity mode) on the thermal fuse. If it has no continuity, it’s blown and must be replaced. Note: thermal fuses blow from over-temperature events — fix the cause first.
- Test the heating element: Check the element for continuity and visible breaks. An open element can prevent heating and cause the control to register an error.
- Test thermistor/temperature sensor and thermostats: Measure resistance values per the service manual. A shorted or open thermistor/thermostat can cause incorrect temperature readings and trigger F22.
- Check the moisture sensor bars and their harness: Clean the sensor bars (metal strips) with a s