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Clothes dryers, whether gas or electric, employ heat to eliminate moisture from garments. The cycling thermostat controls the on-and-off cycles of the dryer’s heating element, allowing for more efficient temperature regulation and the use of thermal energy. As a result, it prevents the dryer from becoming too hot or not getting hot enough to dry the clothes.
When your dryer stops operating, determining the actual problem might be challenging. However, due to the presence of electrical and gas lines, it would be best if you called a professional to do the diagnostics and repairs. Nonetheless, you can take measures to troubleshoot and check for a broken thermostat.
The Function of a Cycling Thermostat
During operation, your dryer’s temperature is monitored and maintained by a dryer cycling thermostat. The thermostat features a closed electrical circuit, allowing energy to flow freely and power the heating element.
The thermostat opens and breaks the electrical connection to the dryer’s heating element as the temperature rises. Doing so cools down the dryer’s heating element and air inside. Subsequently, the thermostat re-closes, and the dryer’s heat source reactivates when the drum temperature decreases.
What Transpires if Your Dryer Thermostat Malfunctions?
Maintaining a steady temperature in your dryer is accomplished by repeatedly cycling the heat on and off. Possible signs that the thermostat isn’t making the proper connection to power the heating element include:
- The drum rotates, but the air within is not heated
- Your clothes are still damp when your dryer stops operating
Also, a defective thermostat may have a permanent connection that remains intact even as the temperature rises. If the dryer’s heating element stays on for too long, you may have any of the following problems:
- Your dryer is getting too hot and perhaps starting a fire
- Your dryer is shutting down before its allotted time has passed
On specific models, the cycling thermostat controls the timer. Therefore, an automatic dryer that won’t shut off may have a faulty thermostat. You should examine your cycling thermostat to see whether you need to replace it if you notice any of these symptoms.
How to Test Your Cycling Thermostat
Gathering the necessary equipment is the first step in checking the cycling thermostat on your dryer. You will need a digital multimeter, needle-nose pliers, and a Phillips screwdriver. Afterward, follow the following steps:
Unplug Your Dryer
Ensure the dryer is disconnected, then open the cabinet to access the cycling thermostat. It is usually connected to the blower housing and positioned along the drum’s airflow.
Open Rear Panel
Pull your dryer away from the wall to access the rear panel. It is a screwed-in square or rectangle of metal. Remove the screws, then remove the panel.
Locate Your Dryer’s Temperature Control Setting
The panel reveals the wheel housing and dryer vents. Here you should notice a little round or oval component around 1.5 inches. It may have an identification label.
Examine the Thermostat
Examine the thermostat and the label. If either appears burned, you need to replace your thermostat. However, if both are in excellent shape, examine the thermostat’s electrical performance.
Identify and Mark Wires
Two cables link the dryer’s thermostat and heating element. And metal slip connectors connect them to the thermostat. Label the wires for reconnection.
Unplug the Cables
Grip the connectors while pulling wires from terminals. Not the cables! If the connection is too tight, use needle-nose pliers.
Calculate the Electrical Flow of the Thermostat
Place the prongs of your multimeter on the terminals of the thermostat, and make sure Rx1 is selected. A value of 0 or infinity should appear. If your test results differ, you must purchase a new cycling thermostat.
Call a Specialist for Help
Like any other appliance, regular usage and time will ultimately deteriorate the condition of your dryer’s components. However, routine maintenance ensures that your dryer continues to function effectively, particularly when you need it most. The above article will help you manage most maintenance and minor repairs. However, if you can’t fix it, get an expert.
Author’s Biography:
Hiram M. Hamilton graduated from university with a BA in Journalism but became a trusted employee at his father’s HVAC company. With 20 years of experience under his belt, Hiram is a specialist in the industry and a self-thought plumber. However, his passion for journalism prompted him to pick up the pen again. Now, he is writing informative articles related to HVAC issues, home services, and plumbing tips and tricks to educate the public and help people become more self-reliant.
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