Whirlpool Dryer Error Code F22

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

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. Check the moisture sensor bars and their harness: Clean the sensor bars (metal strips) with a soft cloth and isopropyl alcohol. Corrosion or residue causes false readings.
9. Swap or inspect relays on the control board: If the board is suspected, look for burnt components or swollen capacitors. Board replacement is often the final step when individual parts test good.
10. Run a diagnostic cycle: Many Whirlpool dryers have a test mode — consult the model’s service sheet to read live sensor values and active error logs. This narrows down which component is failing.
11. If you’re uncomfortable with electrical tests or the dryer is gas-powered, stop and call a qualified appliance technician. Gas heating system repairs are high risk and should be handled by pros.

Maintenance / Prevention Tips

• Clean the lint filter before every cycle to maintain airflow and reduce heat buildup.
• Inspect and clean the exhaust duct at least annually; more often if the dryer is heavily used.
• Use smooth, short ducting (no long flexible foil runs) and minimize bends to improve airflow.
• Keep the exterior vent flap and screen free of debris, nests, and lint accumulation.
• Don’t overload the dryer — packed loads restrict airflow and extend drying time.
• Clean the moisture sensor bars occasionally with a soft cloth and rubbing alcohol to remove residue from dryer sheets or fabric softener.
• Replace worn or crushed vent hoses; use rigid or semi-rigid metal ducting where possible.
• Check the dryer’s cabinet and back panel for lint accumulation and vacuum out dust during maintenance.
• Ensure the dryer is level — improper leveling can affect door/latch alignment and sensor behavior.
• Use correct dryer cycles and avoid selecting high-heat cycles unnecessarily for delicate items.
• Schedule annual professional maintenance if you have a gas dryer or if you rely on the appliance heavily.
• Replace thermal fuses, thermostats, or the heating element promptly when they show signs of failure to prevent cascading damage.
• Keep the area around the dryer clear to avoid restricting ventilation openings.
• Use approved replacement parts to maintain proper performance and safety ratings.
• If you notice a burning smell, visible sparks, or smoke, unplug the dryer immediately and get professional help.

FAQs

Conclusion / Safety Notice

F22 on a Whirlpool dryer is often tied to heating and sensing systems — problems that can affect drying performance and, in some cases, create safety risks. When troubleshooting, always disconnect power (and gas supply for gas dryers) before opening panels. Use proper tools and test procedures. If troubleshooting steps above do not resolve the issue or if you encounter damaged wiring, gas components, or signs of overheating, contact a certified appliance technician. Professional diagnosis ensures safe, code-compliant repairs and avoids accidental injury or further damage.

When in doubt, unplug the appliance and call a qualified repair service. Small DIY fixes like cleaning the lint trap, clearing the vent, or replacing easily accessed parts can solve many problems, but safety must come first for any electrical or gas-related repair.