How to Test the Thermostat on a Dryer With No OHM Meter

If your dryer is experiencing heating problems, the cause is likely the thermostat. The thermostat on a dryer is responsible for the heating and cooling of the drying cycle. Not more than an inch and a half in size, the thermostat can be removed and replaced without great difficulty. Without the use of an ohmmeter, it will be necessary to troubleshoot to discover if the problem is the thermostat.

Things You'll Need

• Dryer
• Screwdriver

Instructions

1. Unplug the dryer. Remove the lint screen and remove the two screws holding its case to the dryer. Under the lint screen you should find the thermostat. Check the wires of the thermostat for corrosion, breakage or other damage.

2. If your dryer is gas, check the ignitor and see if it is lit. A bad igniter will turn on a few times and then quickly shut off. If your igniter is not bad the problem with your dryer could be the thermostat.

3. Check the coils in the gas valve. The gas valve has two coils. When the the coils are bad, the gas valve won't open up to allow gas flow.

4. Check that the power source to the dryer is sufficient. Electric dryers require 240 volt electrical power.

5. Check that the dryer vent is not obstructed by dirt and debris. Remove the dryer vent and vacuum it out. If the dryer is still not heating then your problem is likely due to a bad thermostat.

Tips & Warnings

• To help eliminate odors in your dryer, soak a batch of towels in ten parts water and one part lemon juice and dry in the dryer.

• Never leave tools around children.

References

• Appliance Aid
• Part Select
• DIY: Washing Machine

Resources

• Appliance Parts Pros