How to Fix the Operating Thermostat for a Dryer That's Not Heating

If your dryer is running but has no heat, it could be an issue with your dryer’s operating thermostat. An operating, or cycling, thermostat is responsible for turning the heating element within your dryer on and off as needed. If it malfunctions or is bad and needs replacing, it can cause your dryer to stop heating entirely, so if your dryer is receiving no heat at all (as opposed to not getting hot enough), this could be the culprit. This thermostat is one of the core functions of any dryer and is an integral part of the electrical system as well, working with the hi-limit thermostat and thermal fuse, so its status can completely change how well a dryer operates. Our guide below will help you figure out if the operating thermostat is the root cause of your dryer issues, and will help you diagnose and replace this thermostat in the event that it is.

What is an Operating Thermostat?

An operating thermostat is a device within your dryer that, together with the control board, manages the internal temperature of your dryer by turning the heating element on and off during the drying cycle.

Where is the Operating Thermostat Located?

The operating thermostat is located near the blower housing within your dryer to detect whether the internal air temperature gets too hot. If you need help finding your operating thermostat, our 3D rendering below can give you a general location. Consult your model’s user manual for a more specific location.

General Location of the Operating Thermostat in a Dryer

How to Access, Remove, and Inspect the Operating Thermostat in a Dryer

1. Unplug your dryer from the wall outlet.
2. Depending on your model, you may need to remove parts of the top panel before you can access the rear of the machine.
3. Using the appropriate screwdriver or wrench, disconnect the back panel from the dryer.
4. Once you locate the thermostat, remove any wires connected to it.
5. Disconnect any screws that are keeping your thermostat attached to the dryer and then you should be able to remove it.

How to Test the Operating Thermostat

1. Using a multimeter, touch the probes to the outer terminals. If, after completing the circuit, the multimeter detects a current, it means it has electrical continuity.
2. To test whether it works properly in hotter temperatures, heat a pan or griddle to the number printed on the side of the thermostat (e.g. L140, 155, etc.).
3. Touch the probes to the outer terminals once again, and if the thermostat shuts off at higher temperatures, it’s working properly. If it does not, your thermostat is defective.

How to Install a New Operating Thermostat

1. Put the new thermostat into the dryer, then reconnect any screws or wires to secure the thermostat within the dryer cabinet.
2. Reconnect the top panel if necessary and reconnect any other wires or screws that were previously disconnected to access the thermostat. Your repair is complete!

Next: Troubleshooting the High-Limit Thermostat

Go To Main Page: Not Heating