If your HVAC system
fails to come on, your thermostat could be the culprit. The thermostat could be malfunctioning due to several reasons such as loose wires and tripped circuit breakers. These can be easily corrected to get the thermostat working like before. The thermostat could also be faulty and needing replacement.
Take the steps below to determine if it's time for a thermostat replacement.
- Set the thermostat 5 degrees higher than usual during the heating season or 5 degrees lower during than usual during the cooling season. Check if the appropriate device kicks on.
- If the device doesn't work properly, check if you've correctly set the thermostat to "heat" or "cool." Check your heating or cooling system's main circuit breaker and ensure it's in the "on" position.
- Shut off the power to the system at the appropriate circuit breaker.
- Remove the thermostat's cover carefully using your hand.
- Check if the wires are firmly attached to the mounting screws. Tighten any loose mounting screws and wires.
- Switch the breakers on and find out if the system runs by repeating the first step, which is setting the thermostat. If it still doesn't run, turn the power off.
- If you're having furnace problems, disconnect the red and white wires inside the thermostat. If you're having air conditioning problems, disconnect the red and green wires. While loosening the screws, firmly grip the wires using your other hand to prevent them from slipping behind the wall.
- Twist the two wires together and then switch the power back on. If the system's blower kicks on, you have a bad thermostat that needs replacement. If it doesn't come on, the thermostat is not to blame for the problem.
When you get a new thermostat, it's important to clean it occasionally to keep it working correctly. For more information on thermostat replacement, please contact us at Russell's Heating & Cooling
. We've been serving the Hampton Roads area of Southeast Virginia for nearly 40 years.
Our goal is to help educate our customers in Chesapeake, Virginia and surrounding areas about energy and home comfort issues (specific to HVAC systems). For more information about thermostats and other HVAC topics, download our free Home Comfort Guide or call us at 757-750-1831.
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