5 Common Issues Causing AC Units to Shut Off Unexpectedly

When the heat of summer is overwhelming and sweat is dripping off you, you rely on your air conditioning unit to provide comfort. Any irregularities in its cooling efficiency become painfully obvious, making your discomfort grow. Calling a technician for air conditioning services in Provo is one way to regain comfort, but it’s also important to understand potential reasons why your unit might be shutting off unexpectedly.

1. Thermostat Malfunction

If your thermostat is not functioning correctly, it could cause your air conditioner to short cycle. An inaccurate temperature reading can lead to incorrect signals being sent to your AC system, causing it to frequently turn on and off. Signs of a battery issue include a blinking, blank, or dim display. Replacing the batteries is a simple first step.

2. Clogged Air Filter

Your air conditioning unit needs a steady airflow to perform efficiently. If the air filters are not regularly changed, they can become clogged with dust and debris, limiting airflow and leading to the unit shutting off as a protective measure. Check your filters for accumulation.

3. Inappropriate Thermostat Location

A thermostat positioned near a window that gets direct sunlight, under air vents, or in a warmer area of the house can produce unreliable temperature readings. This misreading can make the thermostat detect temperatures that are not representative of the home’s overall climate. Consider consulting with a professional to relocate your thermostat.

4. Incorrectly Sized Unit

An air conditioning unit that is too large may lead to inefficient refrigerant cycles, causing the system to cool the home too quickly. This can result in the unit shutting off shortly after turning on, only to cycle back on sooner than necessary.

5. Dirty Condenser Coils

Regular maintenance, especially before peak usage seasons like summer, is essential. When the condenser coils become dirty and caked with debris, they cannot effectively expel the heat extracted from your home, leading to overheating and system shutdown.

In Provo, air conditioning is vital during the summer months. Ensure your AC system is serviced annually to prevent intermittent cooling and unexpected repair costs.