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How to replace a dryer's thermostat:
This step-by-step guide teaches you how to replace the thermostat in your dryer. Find the official OEM replacement thermostat that fits your appliance.
Your dryer uses multiple thermostats to regulate its internal temperature. The cycle selected determines which thermostat is used. The cycling thermostat can be found somewhere in the path of air that is leaving the drum. So, it could be found on the blower wheel housing or inside the venting/exhaust system. Dryer thermostats are usually oval shaped and about an inch and a half in length. Also, there should be two wires leading to each thermostat. Label these wires before you remove them so that you are able to correctly reconnect them later.
The wires to the thermostat are connected using metal slip on connectors. Remove the wires by pulling on the connectors, and not the wires themselves. It may be a good idea to use a pair of needle nosed pliers to help you.
The thermostat itself is attached to the dryer with two screws. Remove both screws and discard faulty cycling thermostat. Install new thermostat, securing it in place with two screws. Reconnect the two wires, reassemble your clothes dryer, and restore power to the unit. Run your dryer through a cycle to make sure it is working properly.
For more information about dryer thermostats: