How to Troubleshoot a Thermostat
Last updated September 7, 2023
If you find that your HVAC system is pumping out heat or air conditioning at a drastically different temperature than you desire, or not producing any heat or AC at all, it’s time to check your thermostat. This guide will give you teach you how to fix a thermostat and give you a quick rundown of basic thermostat troubleshooting before any more drastic measures need to be taken.
Difficulty:
Beginner
Duration:
Under 2 hours
Table of Contents
Remove Thermostat Cover
Inspect the Thermostat Wiring
Remove Thermostat Cover
- Turn off the power to your HVAC system at the circuit breaker panel box.
- Remove the cover plate to your thermostat.
- Loosen the thermostat body mounting screws with a screwdriver.
Inspect the Thermostat Wiring
- Inspect the wiring on the base.
- If there are any loose wires or wires that are cut or corroded, they should be clipped, stripped and reattached to the terminal screws.
- Replace the thermostat body plate.
- Restore power at the circuit breaker panel box.
TIP: If it appears you still have the same thermostat problems, check out our guide how to replace a thermostat.
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