Say goodbye to overheated laundry: learn how to test the high limit thermostat in your whirlpool dryer

A malfunctioning high limit thermostat can lead to a range of issues with your Whirlpool dryer, including overheating, premature shutdowns, and even fire hazards. If you suspect a problem with this critical component, it’s essential to test it promptly to ensure the safety and efficiency of your appliance.

Identifying the High Limit Thermostat

The high limit thermostat is typically located near the heating element or blower housing in your Whirlpool dryer. It is a small, round device with two terminals and a reset button. The thermostat is responsible for monitoring the temperature inside the dryer and shutting off the heating element if it exceeds a safe level.

Materials Needed

To test the high limit thermostat, you will need the following materials:

• Multimeter
• Screwdriver
• Gloves (for safety)

Safety Precautions

Before proceeding with the test, ensure that the dryer is unplugged from the power outlet. Always wear gloves when handling electrical components to prevent shocks.

Step-by-Step Testing Procedure

1. Remove the High Limit Thermostat

Use a screwdriver to remove the screws holding the high limit thermostat in place. Carefully disconnect the wires from the thermostat terminals.

2. Set Multimeter to Ohmmeter Setting

Turn on your multimeter and set it to the ohmmeter setting. The ohmmeter will measure the electrical resistance of the thermostat.

3. Test Thermostat Continuity

Place one probe of the multimeter on each terminal of the thermostat. If the multimeter displays a reading of zero or close to zero, it indicates continuity, meaning the thermostat is closed and working correctly.

4. Reset the Thermostat

If the thermostat is open (no continuity), press the reset button on the thermostat to reset it. Reconnect the wires to the thermostat terminals and reinstall it in the dryer.

5. Test the Thermostat in the Dryer

Plug the dryer back into the power outlet and start a drying cycle. Monitor the dryer for any signs of overheating or premature shutdowns. If the thermostat is functioning correctly, it should prevent the dryer from overheating.

Troubleshooting Test Results

• Continuity in Both Positions: The thermostat is faulty and needs to be replaced.
• No Continuity in Both Positions: The thermostat is open and needs to be replaced.
• Continuity in Reset Position Only: The thermostat is not resetting properly and needs to be replaced.

Replacing the High Limit Thermostat

If the test results indicate that the high limit thermostat is faulty, it must be replaced. Follow these steps to safely replace the thermostat:

1. Unplug the Dryer
2. Remove the Old Thermostat
3. Install the New Thermostat
4. Reconnect the Wires
5. Reinstall the Thermostat

Additional Tips

• Regularly clean the lint screen and exhaust duct to prevent overheating and potential thermostat issues.
• Inspect the heating element and blower wheel for any damage or obstructions.
• If you are not comfortable testing or replacing the high limit thermostat yourself, contact a qualified appliance repair technician.

Wrap Up

Testing the high limit thermostat in your Whirlpool dryer is a crucial step in diagnosing and resolving overheating issues. By following the steps outlined in this guide, you can ensure the safety and performance of your appliance. Remember to always prioritize safety and consult a professional if you encounter any difficulties.