AC Won’t Stay On: Six Reasons and How to Troubleshoot

Florida summers are known for extreme heat and humidity. That’s why Tampa homeowners rely on their air conditioning units more than ever when the weather starts to heat up.

Air conditioning units cool your home by releasing cool air in frequent cycles. When the AC won’t stay on, it can be challenging to cool your home. The Airzone air conditioning installation experts in Tampa understand the importance of having a working AC during the Florida summer. When the AC unit breaks, the Airzone technicians are ready to provide an effective and long-lasting repair.

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Follow these six troubleshooting tips to restore the cool air when your AC won’t turn on.

1. Faulty Thermostats

When the AC won’t stay on, check the thermostat first. A home’s AC unit cools a room according to temperature instructions set by the thermostat. When the thermostat malfunctions, the air conditioning unit is incapable of adequately cooling the home.

First, check the batteries. It can be easy to forget about changing the thermostat’s batteries, but doing so can prevent the air conditioner from working efficiently.

If the batteries aren’t the issue, it could be that the thermostat is not in a proper location. For example, if the thermostat is near a heat source such as a duct or household appliance, it will heat up quicker, affecting the air conditioner’s temperature instructions. Changing the location of a thermostat typically requires the expertise of a professional HVAC technician.

2. Dirty Air Filters

Dirty or clogged air filters are one of the most common problems with residential air conditioning units. The system’s air filters remove dust and debris from the air to protect a home’s indoor air quality. Over time, the debris collects on the filter, preventing it from filtering air effectively.

In more severe cases, a dirty air filter can clog and overheat the system. This often leads to short cycling and forces the system to shut down.

The best way to prevent overheating and clogging is to replace the air filter regularly. For most systems, it is recommended to replace the air filter every three months. Thankfully, air filters are inexpensive and easy to install.

3. Electrical Problems

Various electrical problems can affect the efficiency of an air conditioning system, such as:

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● Faulty sensors

● Malfunctioning relays

● Control board issues

● Faulty start capacitors

● Poor fuses

To check if the AC unit is experiencing electrical problems, shut off the power to reset the system. If this doesn’t work, it’s time to call a professional HVAC technician.

4. Frozen Evaporator

Dirty condenser coils or evaporators will prevent effective heat transfer in the system. This leads to overheating and system shut-down.

In some instances, dirty coils, along with a lack of airflow, will cause the evaporator to ice over, resulting in the system shutting off. Although Florida homeowners want a cool home, a freezing AC unit produces a long list of problems.

Fixing faulty condenser coils or evaporators requires professional expertise. The professionals at Airzone Air Conditioning and Heating will provide a quick and effective fix that restores the air conditioning unit and protects the home’s indoor air quality.

5. The Air Conditioning Unit is the Wrong Size

Like many other household appliances, an air conditioning unit works more efficiently when it fits the home. A common problem homeowners face is having a unit that is too small for the home. When the unit is too small, it must work harder to reach thermostat demands. This leads to increased energy bills, unevenly cooled rooms, and a short-cycling system.

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On the other hand, a unit that is too big will also short-cycle. In this case, the air conditioning system will cool the home too quickly; as a result, it will shut off quicker. Although this seems like a minor concern at first, an oversized air conditioner cannot filter or dehumidify the air, affecting the home’s indoor air quality.

Unfortunately, the only way to resolve this issue is to replace the old unit with one that better fits the size of the home. Working with an HVAC professional can help when deciding which system to install.

6. The System Has Low Refrigerant

Refrigerant is an essential liquid in the air conditioning system that keeps the unit running and cooling properly. It is vital to maintain a proper refrigerant level to keep the system functioning – not too little and not too much.

Low refrigerant can be the result of two things:

1. A refrigerant leak
2. Poor installation

In the case of poor installation, adding more refrigerant to the system will restore efficiency to the unit. However, a refrigerant leak is a more severe problem.

Refrigerants are poisonous to people and animals. If the air conditioning system is leaking and is not correctly protected, the refrigerant can be fatal to those that ingest it. To fix a refrigerant leak, block off the area and call the HVAC professionals right away.

Tampa, FL Air Conditioning Repair and Installation

As the summer approaches, it becomes more important to have a functioning AC system. The best way to ensure that a home’s AC unit continues to run without malfunctioning is through regular maintenance.

Frequently replacing the air filter and checking the unit for dirt or debris are simple steps to prevent repairs and keep your home comfortable year-round. The professional HVAC technicians at Airzone Air Conditioning and Heating care about helping Florida homeowners restore their air conditioning units quickly and effectively.

When the AC won’t stay on, sometimes quick troubleshooting can resolve the issue. However, some problems require professional tools and expertise. For example, electrical issues, faulty condenser coils, and refrigerant leaks are issues that the professionals should handle.

When looking for air conditioning repair in Westchase, FL, let the experts at Airzone Air Conditioning and Heating help. Call today at (813) 750-0191 to schedule an inspection.

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Categories: Outdoor