An abrupt malfunction in your HVAC system can cause alarm. The issue may very well be with the air conditioning or heating unit itself. However, it could also be due to a faulty thermostat. Here’s how to identify common thermostat problems and how they inhibit optimal HVAC operation.
AC Won’t Start or Won’t Turn Off
If the furnace/AC won’t start at all, this may be due to a wiring defect within the thermostat. When the wiring is loose, the thermostat can’t read the room temperatures correctly and may fail to switch on the cooling or heating.
Bad wiring may also lead to the opposite problem, in which the HVAC units won’t switch off. It’s also possible the thermostat is improperly calibrated and sending the wrong instructions to the HVAC system.
The room temperature may not match the reading on the thermostat. The issue can be as simple as the thermostat’s not being perfectly level. This can occur if you accidently bump it. Fix the issue by placing a carpenter’s level below it and adjusting the unit’s level. Continue Reading →