Project Guide

Troubleshooting Your Thermostat

Remove Thermostat Cover
Remove thermostat cover - Troubleshooting Your Thermostat
  • 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 thermostat wiring - Troubleshooting Your Thermostat
  • 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.

This guide should have helped you with basic thermostat repair. If it appears your thermostat problems cannot be fixed, check out this guide on how to replace a thermostat.