What to do if your thermostat becomes stuck

A temperature control controls your heating and air conditioning system’s functions by determining the amount of heat produced by the gas furnace.

It can get stuck in the on or off position and affect your HVAC unit’s normal function.

When it does, you will need to repair it by first determining the causes for the sticking. A build-up of grease, debris and dirt can cause your temperature control to get stuck. When your temperature control gets stuck in the closed position, your HVAC system will overheat since there will not be any coolant circulation, to repair this, you should first turn the power to the HVAC system off. The next step is to unfasten the cover by following your manufacturer’s directions. Brush and vacuum the temperature control carefully to unfasten dust and dirt from the contact point and lever switches. Wipe the several metal strips with a soft cloth and use a crisp dollar bill to unfasten dirt from the crevices. Then slip a 7/32″ wrench onto the hex nut below the bimetal while you hold the temperature adjustment lever in a stationary position. Turn the hex nut clockwise until you open the switch. Then adjust the lever to the lowest temperature setting. Replace the cover and wait for the temperature to stabilize before moving the temperature adjustment lever to correspond to the room temperature, mount the temperature control in a spot where the air is consistent with the room temperature. Regularly cleaning your house temperature control will help clear grime, dirt and dust. It ensures your heating and air conditioning system runs well without any hiccups; Consult your heating and air conditioner business to calibrate the temperature control if you cannot do it on your own. If the temperature control continues to fail despite correct cleaning and repair, you should get a replacement from your local heating and air conditioning supplier or get in touch with your heating and air conditioning repairman.

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