KitchenAid F22 — F22 signals the exhaust-side thermistor is out of range, often tied to a blocked vent.

This guide explains the Kitchenaid Dryer F22 Error: what it means, what causes it, and how to resolve it safely.

Understanding the Kitchenaid Dryer F22 Error

Below, our specialists break down everything you need to know about the Kitchenaid Dryer F22 Error.

Understanding the Kitchenaid F22 Error

Below, our specialists break down everything you need to know about the Kitchenaid F22 Error.

What F22 means on your KitchenAid dryer

On the exhaust side of the drum, where hot humid air exits toward the vent, most KitchenAid dryers place a thermistor to keep tabs on outlet temperature. This sensor is one of the machine’s safeguards against overheating, and the control board relies on its readings constantly during a heated cycle. A KitchenAid F22 error means that outlet reading has drifted outside the range the board considers valid, so the machine halts the cycle rather than run the heater without a trustworthy temperature check.

This particular sensor sits directly in the path of the hottest air the dryer produces, which makes it more exposed to thermal wear over time than some of the machine’s other components, and it’s also more sensitive to problems elsewhere in the exhaust path, like a clogged vent driving temperatures well past normal before the sensor itself even fails.

Symptoms

• The dryer shuts down mid-cycle and displays F22
• Heated cycles fail to complete, though Air Fluff may still run
• You notice unusually hot air or a burning smell near the vent before the code appears
• Drying times had already been getting longer in the weeks before the problem showed up
• The dryer cabinet or exhaust area feels hotter than usual to the touch after a cycle

Common causes

• The outlet thermistor has failed electrically after years of exposure to the hottest exhaust air the dryer produces, returning either an open or a shorted reading.
• The wiring between the outlet thermistor and the control board has broken or disconnected, typically at a point where the cabinet flexes during normal vibration.
• A blocked exhaust vent has pushed exhaust temperatures far above normal, which can drive even a healthy thermistor’s reading out of the valid range before the sensor itself ever physically fails.

Troubleshooting steps you can try

1. Unplug the dryer before inspecting anything, since you’ll be working near the rear panel and exhaust path where components can retain heat.
2. Remove and wash the lint filter, then disconnect the vent hose behind the dryer and clean it thoroughly with a vent brush, reaching as far into the wall duct as you can. Check the exterior vent hood outside for any blockage as well.
3. Do not run the dryer again on a heated cycle until the vent is confirmed clear and, ideally, until a technician has checked the thermistor — running it without a valid temperature reading is a genuine fire risk, not just an inconvenience.
4. Use an alternative like line drying or a laundromat for urgent loads while you wait for service.

When to call a technician

Certain dryer conditions are not safe or practical to fix yourself — call a professional if:

Because F22 sits squarely on the safety side of dryer problems, treat it as a priority service call rather than something to defer, especially if you noticed unusual heat or odor near the vent before the problem first appeared.

If these checks do not clear the F22 code on your dryer, the problem likely sits in a component that needs a specialist. Book a KitchenAid repair online, browse related error codes, or see product details at kitchenaid.com.