Appliance Codes
Your go-to resource for appliance repair guides, repair help and parts
Your go-to resource for appliance repair guides, repair help and parts
Find out how to troubleshoot and repair the F22 error code on your Whirlpool Duet Dryer. Follow our comprehensive guide to test the thermistor and restore your dryer’s functionality.
The F22 error code on your Whirlpool Duet Dryer signifies an open exhaust thermistor. This component is responsible for monitoring the exhaust temperature and ensuring the dryer heats properly. When the thermistor is open, the dryer cannot regulate temperature effectively, which can lead to the dryer shutting down or not heating at all. To resolve this issue, you’ll need to perform a series of tests to check the thermistor and its connections. Follow the steps below to troubleshoot and repair the F22 error code on your dryer.
1. Prepare the Dryer for Testing: Before starting any diagnostics, ensure the dryer is empty and the lint screen is clean. This will provide accurate test results and prevent any blockages that could affect the thermistor’s readings.
2. Run a Diagnostic Test: Plug in the dryer or reconnect power and start a Timed Dry cycle. If the F22 error code flashes after about 60 seconds and the dryer shuts off, this indicates that the thermistor or its wire harness is either open or shorted. Unplug the dryer or disconnect the power before proceeding to the next steps.
3. Check Wire Connections: Access the machine control electronics as outlined in the service manual. Locate the thermistor, usually found at the exhaust outlet. Check all wire connections at the machine control electronics and the thermistor. Ensure all connectors are secure and free of damage. Loose or damaged wires can cause the F22 error to appear.
4. Test the Thermistor: If the wire connections are good, the next step is to test the thermistor itself. Remove the two wires connected to the thermistor. Using a multimeter set to measure resistance (ohms), check the thermistor’s resistance at various temperature levels. Refer to the following table for the correct resistance values:
| Temperature Setting | Temperature (°F) | Thermistor Resistance (kΩ) |
|---|---|---|
| High | 155° ± 5°F (68° ± 3°C) | 2.1 - 1.7 |
| Medium | 140° ± 5°F (60° ± 3°C) | 2.8 - 2.3 |
| Low | 125° ± 5°F (52° ± 3°C) | 3.8 - 3.1 |
| Extra Low | 115° ± 5°F (46° ± 3°C) | 4.7 - 3.8 |
If the resistance values match those listed above, the thermistor is functioning correctly. If not, the thermistor is faulty and needs to be replaced.
5. Replace the Thermistor: If the thermistor is found to be defective, replace it with a new one. Be sure to use the correct part number for your dryer model. The part number can vary by model, so it is important to confirm the right one. If you are unsure, you can submit a question on our website with your dryer’s model number, and our team will help you identify the correct part.
6. Reassemble and Test the Dryer: Once the thermistor is replaced, reconnect all wires and ensure all connections are secure. Reassemble any panels that were removed and plug the dryer back into the power source. Start a Timed Dry cycle again to test the dryer. Monitor the dryer to ensure the F22 error code does not reappear and that the dryer heats and operates correctly.
If the F22 error code persists after replacing the thermistor, it may indicate a deeper issue with the dryer’s electrical system or another component. In such cases, consulting a professional technician for further diagnosis and repair is recommended.
For additional assistance, feel free to submit a question on our website and provide your dryer’s model number. Our team of experts is ready to help you with any appliance repair issues you may encounter, including identifying the correct part numbers for your dryer’s components.
