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How to Detect a Faulty Thermostat

How to Detect a Faulty Thermostat

If you are experiencing issues with your HVAC system, the thermostat is the first item you should inspect. These gadgets regulate the HVAC system's functionality and, if they malfunction, it will appear like your HVAC system has issues. The thermostat is the brain of your HVAC unit; if it develops technical problems, you will recognize some changes in your energy costs and air comfort.

Therefore, it's best if you check your thermostat regularly to ensure it's working correctly. Let us look at the signs of a faulty thermostat and how to troubleshoot them.

Signs of a Faulty Thermostat

Here are four signs that show your thermostat is faulty and causing your HVAC ailments:

HVAC Unit Won't Turn On

One of the most evident signs of a faulty thermostat is when your HVAC unit won't turn on. The thermostat transmits electrical signals to your heating and cooling system using wires. A wiring issue will prevent the electrical signals from transmitting to your air conditioning unit.

Thermostat Fails To Respond To Updated Settings

Your thermostat should almost instantly respond to the temperature settings adjustments you apply. In many of these situations, the thermostat makes a slight ticking sound as the adjustments are made, and then the cooling or heating begins. If the ticking sound does not happen or the unit doesn't respond after the adjustments are made, your thermostat has malfunctioned, needing replacing.

HVAC Unit Short-Cycling

Short cycling happens when your air conditioner randomly switches on without your order, turning off quickly, or doesn't complete a full cooling or heating system cycle. This leads to ineffective cooling and heating, thus impacting your comfort.

Incorrect Thermostat Display

Programmable thermostats have displays. When the screen is blank, missing regular details such as the current temperature, or displaying the incorrect temperature, this may indicate that it is faulty and needs to be replaced.

Thermostat Troubleshooting

Replace the Batteries

Most modern thermostats depend on battery power to function. If the thermostat display is unlighted or blank, replacing the batteries could fix the issue. Bad batteries also cause other thermostat issues. Replace your batteries and see whether it does the trick.

Reset Circuit Breakers

Check to ensure your circuit breakers haven't fallen. Locate circuit breakers on your main breaker box and air conditioning unit. If they have fallen, flip the circuit breakers and test your air conditioner and thermostat.

Check and Adjust the Settings

The thermostat may reset to factory default settings if a power failure or a circuit breaker is switched. Ensure that your thermostat is set to give the proper cooling or heating as required and that the configured set-points are right.

Knowing how to detect a faulty thermostat d will save precious troubleshooting time to get to the root of cooling and heating issues. If the above tips don't work for you, consider hiring an HVAC specialist to inspect and fix the underlying air conditioning issues.

Contact us at Robert Bair Plumbing Heating and Air for all your cooling and heating needs, including thermostat replacement.