Aggressive Mechanical, Inc

Programmable Thermostat on the Blink? Some Tips for Getting It Shipshape

17 Jun
Programmable Thermostat

Programmable thermostats are an easy way to save money on the heating and cooling bills for your Monmouth County home, and though they are typically very reliable, every once in a while they may fail to operate correctly. If your programmable thermostat is on the blink, try a few of these tips to see if you can fix the problem yourself, before you call a professional or replace the unit:

  • Check the Programming: If your thermostat has power check the programming to make sure that it is set correctly. Double-check that all times are set to the correct AM or PM value and that the day of the week is correct. Also, after you are done checking the programming, make sure that the thermostat is set to “Run” or “Auto” according to the manufacturer’s operating instructions.
  • Test the Power: If your programmable thermostat is powered by batteries, put in a new set and test the system again. If it receives power from the HVAC system, use a volt meter to make sure that there is power on the thermostat line from the wall and measure the voltage to make sure that it matches your system’s specifications, usually 24 volts. Also check the breakers for the HVAC system.
  • Replace the Fuse: If there are fresh batteries or there is power at the wall, check the thermostat for a blown fuse. Usually, this is a glass automotive-style fuse, with a glass body, metal end-caps and a thin filament running through the glass body. Open the thermostat and check the fuse for a broken filament. Replace it with the same type of fuse, with matching amperage and voltage specifications.
  • Test Heating and Cooling: Check both the heating and cooling systems. If one system works correctly with the thermostat, and the other does not, it is likely a problem with the HVAC system, not the thermostat.

If you have followed these tips and your programmable thermostat is still on the blink, contact our HVAC professionals at Aggressive Mechanical Contractors, Inc. for advice. We provide quality HVAC services for Monmouth County and the surrounding areas.

Our goal is to help educate our customers in Monmouth County, New Jersey and surrounding areas about energy and home comfort issues (specific to HVAC systems). For more information about programmable thermostats and other HVAC topics, download our free Home Comfort Resource guide.

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