How to Fix an Air Conditioner Thermostat

With record-breaking scorching summer weather, an air conditioner has become essential for most homes. Air conditioning units contain connectors, controls, piping, lines, airflow outlets, and more. Of all these elements, the thermostat is one of the most common parts to cause issues. How do you diagnose and repair thermostat problems? Read on to learn how to fix an air conditioner thermostat. 

What Does an Air Conditioner Thermostat Do?

An AC thermostat reads the air temperature and triggers adjustments by turning the unit’s compressor and fan off or on as needed. Essentially, the thermostat is a switch connected to a sensor. If not working correctly, energy efficiency is compromised, and the comfort level of your home decreases. 

Signs That You Have Thermostat Issues

There are many indicators of problems with an AC thermostat. The following are suggestions on how to diagnose and fix an air conditioner thermostat.

• The unit is not cooling efficiently: There are many reasons that an AC may not be cooling properly. One of them is thermostat issues. Check for loose or defective wires. Try resetting the thermostat to Auto mode and opening all vents. Remove/debris from around the thermostat housing using a small brush or dry cloth. Never use water.
• Your AC unit won’t turn on: If your unit doesn’t start, check that the thermostat is in cooling mode. Some thermostats require batteries. Check that they have a charge. Call a qualified air conditioning technician if your thermostat requires calibrating or reprogramming.
• The AC unit won’t turn off: If your unit fails to turn off, you may have a short in the wires or a broken thermostat. Contact a reputable HVAC company for help.
• Your thermostat won’t allow a setting change: Check if a child lock is in active mode. Check the circuit box. Examine the AC unit for detached, loose, or corroded wires. If you discover this problem, contact an HVAC technician for assistance. 

How McMillin Air Can Help

Troubleshooting an AC thermostat can be complicated. Trying to repair it yourself could result in additional costly repairs, safety issues (electrical shock, pressurized gases, toxic fumes, etc.), compromised efficiency, and invalidation of the warranty. The qualified technicians at McMillin Air repair and service all makes and models of ACs. We’ll get your system going quickly for a reasonable cost. Should you require a new unit, we’ll help you select the brand and size of air conditioner that’s right for your home. Call to book an appointment.