905-670-4822 sales@Snowdonhvac.com

Bad Thermostat

Do I have a Bad Thermostat? Your thermostat is the “brains” of your heating and cooling system. It detects the indoor temperature and compares it to your desired setting. When a room needs to be warmer or cooler it sends the signal to your system requesting heat or air. If it’s not functioning properly your whole system can seem “out of whack”.

Here are a few ways you can check to see if you have a  bad thermostat:

1. Check to see if your thermostat is set to cool or heat

  • Time flies and seasons change quickly! If you haven’t made the setting switch depending on the season, that may be the culprit.

2. Adjust your thermostat setting

  • Set your thermostat slightly higher than you normally would if it’s heating season, and slightly lower than you normally would it is the cooling season. Check to see that the appropriate device starts up.

3.  Check the batteries

  • Thermostat batteries are often forgotten! This is a quick fix and may be the solution.
  • If you have fully charged batteries you have a bad thermostat.

4.  Perform a wiring test

  • Turn the breaker for your furnace to the off position in the “fuse box “or circuit breaker panel.
  • Remove the faceplate of your thermostat and expose the wiring.
  • Use your phone or a camera to take a picture of the wiring to document the original connection.
  • Loosen the screws labeled W and R (or Rh).
  • Remove the wires from under the screws and twist the ends together.
  • Turn the furnace breaker back on, if the furnace starts up the thermostat is not sending out signals to your system and it will need to be replaced. If it doesn’t turn on, your furnace needs a repair.

The best way to troubleshoot any HVAC problems is to schedule a service call from your preferred HVAC technician. Tell them if you need any parts, you want them from Snowdon. As the leading HVAC distributor of Eastern Canada we’re sure have to what you need!

If you have any questions feel free to call us or come visit us at:

7457 Trans Canada Route, Saint-Laurent, QC H4T 1T3, Canada

1645 Bonhill Rd Unit 3&4, Mississauga, ON L5T 1C1, Canada

110 Ronald Dr, Montreal-West, QC H4X 1M8, Canada