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How to Detect a Faulty Thermostat

How to Detect a Faulty Thermostat

Like any other component of your HVAC system, your thermostat can become faulty. It is important that you keep an eye out for any problems to ensure the proper functionality of your heating and cooling system. Let's take a look at some of the signs of a bad thermostat and how you can troubleshoot the issue.

Signs of A Bad Thermostat

There are several signs of a bad thermostat, including:

  • Battery Replacement: If you have no power to your thermostat or it is not responding at all, this is a sign that your thermostat needs its batteries replaced or it needs a repair.
  • Problems with Wiring: If you turn your thermostat on and it does not turn the HVAC unit on, this may be caused by a wiring issue with your thermostat.
  • Your Unit Will Not Cut Off: If your heating and cooling system will not cut off and runs continuously, this is a sign that the wiring of your thermostat is frayed or that the thermostat is miscalibrated.
  • Room Temperature and Thermostat Settings Do Not Match: If you set your thermostat to a specific temperature, but the air in your home is not reaching that temperature, this is a sign that your thermostat has gone bad.

Troubleshooting Your Thermostat

Once you have noticed the signs above, you can troubleshoot your thermostat to see if you can find the issue.

  • Step one: Look to ensure that the thermostat is set in the right setting. If it is not in the right setting, this can cause the thermostat to not function correctly.
  • Step two: Turn the thermostat down or up by five degrees. You should hear a click, and then the unit should come on and push out air through your registers.
  • Step three: Replace the batteries in your thermostat. This may fix the problem. It is important that you change out your thermostat batteries at least once a year.
  • Step four: If you have a mechanical thermostat, gently clean it. Dust can make these types of thermostats not function correctly.
  • Step five: Test and check wires for connections. If they are not firmly connected, tighten them. If you do not feel comfortable with checking the wires, you can have a technician do that for you.

If you took the steps above and still cannot get your unit to function properly, please give the experts at Harwich Port Heating and Cooling a call. We will troubleshoot your thermostat and replace it if necessary. We have numerous years of experience in the HVAC field and know the importance of a properly functioning system.

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