1. Common AC problems
  2. Diagnosis and Troubleshooting
  3. AC won't turn on

Troubleshooting an AC that Won't Turn On

Having trouble getting your air conditioner to turn on? Read this article to learn what you can do to troubleshoot the issue and get your AC running again.

Troubleshooting an AC that Won't Turn On

When your air conditioner won't turn on, it can be a huge problem in the middle of summer. It's important to troubleshoot the issue and diagnose the cause of the problem as soon as possible. This article will provide tips and tricks for troubleshooting an air conditioner that won't turn on. We'll discuss common causes, such as power supply issues, faulty wiring, and blocked air filters, as well as simple solutions to get your AC working again.

Wiring Issues & Thermostat Problems

Wiring IssuesIf your AC won't turn on, it's possible that the wiring has become loose or disconnected.

This could be due to a variety of reasons, such as an animal chewing on the wires or a loose connection in the fuse box. If the wiring is loose, you'll need to hire an electrician to repair it.

Thermostat Problems

Another possibility is that the thermostat is malfunctioning. If this is the case, then you may need to replace the thermostat or have it repaired by a professional.

If you're not sure how to do this, you can always call an AC repair technician. In either case, it's important to have any wiring or thermostat problems checked out by a professional before attempting to fix them yourself.

Check Your Thermostat

If your air conditioner isn't turning on, you should first check your thermostat. Make sure it is set correctly and that all circuit breakers are in the correct position. If your thermostat is set properly and all circuit breakers are functioning, then your problem may be with the HVAC unit itself. If the settings on your thermostat are not accurate, or if any of the circuit breakers are not working, it can prevent your air conditioner from turning on.

Make sure to double-check all the settings and circuit breakers to ensure that they are in the correct position. If everything is set correctly, but your air conditioner still isn't turning on, then you may need to call an HVAC technician for further diagnosis and repair.

Faulty Compressor

The compressor is an integral part of the air conditioning system. It is responsible for circulating refrigerant throughout the system, and when it fails, it can cause your AC to stop functioning properly. If your AC won't turn on, it could be due to a faulty compressor. The first thing you should do is check to make sure the compressor is getting power.

Check the circuit breaker and make sure it hasn't been tripped. If it has, simply reset it and try turning the AC on again. If the breaker trips again, you may have an electrical issue that needs to be addressed. If the power is fine, you may have a problem with the compressor itself. This could be due to a faulty capacitor, motor, or other component.

You'll need to call a professional technician to diagnose and repair the issue. If your AC won't turn on, a faulty compressor could be the cause. Make sure you check the power source first, and then call a professional technician to diagnose and repair the problem.

Clogged Filter or Blocked Air Ducts

Clogged Filter or Blocked Air DuctsWhen your AC won't turn on, it could be due to a clogged filter or blocked air ducts. A clogged filter will reduce airflow through the system, preventing your AC from cooling your home efficiently. A blockage in the air ducts can also cause a lack of airflow.

This can happen if the ducts are too small for the amount of air that needs to pass through them, or if they become blocked by debris or insulation. If you suspect that your filter is clogged or your air ducts are blocked, you should inspect them and clean or replace them as necessary. When inspecting the filter, make sure it's not torn, damaged, or excessively dirty. If it is, you should replace it with a new one. Inspecting the air ducts is a bit more complicated.

Make sure they are free of any obstructions or blockages, and ensure that they are the proper size for the system. You can also hire a professional HVAC technician to inspect your system and troubleshoot any issues. They can check for clogged filters and blocked air ducts, as well as any other problems that may be causing your AC to not turn on.

Condenser Coils & Fan Motor

The condenser coils and fan motor are an integral part of an air conditioner's cooling process, and if either of these two components are malfunctioning, your AC won't be able to cool down your home. The condenser coils are responsible for releasing heat from the system, while the fan motor is responsible for circulating air over the condenser coils. If either of these parts are not functioning properly, your AC won't be able to cool down your home.

To diagnose the issue, you'll need to check both the condenser coils and fan motor to see if they are working correctly. If the condenser coils are dirty or clogged, they won't be able to release heat from the system, and the air conditioner won't be able to cool your home. To clean the coils, turn off the power to the AC unit and use a vacuum cleaner to remove any dirt or debris that may be clogging the coils. If the fan motor is malfunctioning, it won't be able to circulate air over the condenser coils.

To check if the fan motor is working properly, you'll need to inspect it visually to make sure it is spinning properly. If it isn't, you'll need to replace it. If your AC won't turn on, it's important to check both the condenser coils and fan motor to make sure they are functioning properly. If either of these parts are malfunctioning, your AC won't be able to cool down your home.

Jayne Viviani
Jayne Viviani

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