What to Do When the Programmable Thermostat MalfunctionsProgrammable thermostats are a great way to save money on your Indianapolis area home’s energy bills. Like many other mechanical or electronic devices, however, sometimes they stop working. You can troubleshoot it yourself, before calling a professional. Here are some simple steps to get you going. 

  • Check the batteries. Some programmable thermostats are battery powered. If the thermostat isn’t coming on, you should check the batteries if your model is battery powered. Other models can be powered by the HVAC system, and may require a professional to troubleshoot.
  • Check the Fuse. Some programmable thermostats contain a fuse that can blow out with prolonged use. These fuses have a filament, like a light bulb, which should be one continuous piece. If it appears to be broken, you should replace it with a new fuse.
  • Check the opposite system. If the other steps fail or don’t apply to your circumstances, but your cooling or heating isn’t coming on, you should check the opposite system (heating if you’ve been trying to cool, and vice-versa), to see if it will come on. This will help isolate the problem. If one system is coming on, but not the other, the problem is with that equipment rather than the programmable thermostat.
  • Replace the thermostat. If the problem occurs with both heating and cooling, it’s possible that the problem is with the programmable thermostat, and it needs to be replaced. You can check with the manufacturer and see if the model of thermostat is under recall or warranty coverage before going out and buying a new unit. Once it’s replaced, you can install it according to the manufacturer’s directions, or if you are unsure about installing it yourself, set up a service appointment with your HVAC company.

For more expert information about programmable thermostats or other home comfort related questions, please contact us at Mowery Heating, Cooling and Plumbing. We have been serving the Indianapolis area for more than 40 years.

Our goal is to help educate our customers in Brownsburg, Indiana and surrounding areas about energy and home comfort issues (specific to HVAC systems). 

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