Air Conditioning Repair May 21, 2024

Why Is Your Air Conditioner Failing to Start?

When summer temperatures start to climb, a functioning air conditioner becomes essential to your home’s comfort. However, sometimes you may find that your AC won’t turn on. This can be frustrating and leave you scrambling to find a solution. Understanding common reasons why your AC isn’t turning on can help you diagnose the issue quickly and get your system up and running in no time.

Thermostat Troubles

One of the most common culprits behind an AC unit that won’t turn on is thermostat issues. It’s advisable to first check whether your thermostat is set to ‘cool.’ Additionally, adjust the temperature to a setting that’s a few degrees below room temperature. If the display is unresponsive or incorrect, the batteries might need replacement.

Occasionally, the issue could be more complex, like a faulty sensor, which requires professional attention to ensure your thermostat commands your AC correctly.

Air Filter Blockage

A clean air filter is crucial for maintaining airflow. Air filters should be replaced every one to two months and more frequently if you have pets or live in a dusty area. A clogged filter restricts airflow, leading to overheating and potentially causing the unit to shut off as a safety measure. If your AC isn’t turning on due to a dirty filter, replace the filter and allow any ice that has formed to thaw before restarting the unit.

Capacitor Failures            

Capacitors play a vital role in starting up the AC fan and compressor. Symptoms of a failing capacitor include a humming noise from the AC unit without it starting, or the unit may start but shut down quickly. These components are not user-serviceable and require the expertise of a qualified technician to diagnose and replace.

Shutoff Switch Confusion

The indoor and outdoor shutoff switches are safety features that might be mistakenly turned off, particularly during maintenance. These switches are often located near the furnace or outside near the unit. Ensure these switches are in the “ON” position before troubleshooting other potential causes.

Ice Accumulation

Continuous use without proper maintenance can lead to ice forming on the coils of your AC, impeding its ability to function. If you notice ice, turn the unit off and allow it to defrost completely. This is a sign that it’s time for a maintenance check-up to prevent future issues.

For Optimal Performance

If your air conditioner still isn’t functioning after these checks, it might be time to seek professional help. For expert AC repair in Manassas, VA, feel free to reach out to Parish Services. Our team is equipped to handle all your HVAC needs, ensuring that your system operates smoothly and efficiently.