How To Fix Split AC Compressor Not Turning ON

Your air conditioner isn’t working properly? Before you replace it, take a look at the compressor, where you will find the cause of your malfunction. A split AC compressor not turning ON can be due to various reasons, all of which are simple and easy to fix at home.

In my case, the problem did not seem to be getting sorted out because I got confused. I was not an expert but a friend of mine guided me. Finally, I was able to solve it. Here are the most common reasons why your split AC compressor isn’t turning ON.

Split AC Compressor Not Turning ON

What is a compressor?

Before starting, we must know what exactly is a compressor. The compressor is basically a base on which the air conditioner works. It’s a pump that moves refrigerant through the system.

When the refrigerant reaches the compressor, it’s under high pressure. The compressor squeezes (compresses) the refrigerant, which raises its temperature.

How does the compressor work?

The compressor is the heart of the air conditioner. It’s a pump that circulates the refrigerant through the system. The compressor pressurizes the refrigerant and forces it through the coils. It basically absorbs heat from the air inside your home when the refrigerant passes through the coils.

This process continues until the temperature inside your home reaches the thermostat setting. At that point, the compressor turns off and circulated room-temperature air through your home until the temperature rises again, at which point it turns back on.

Why is my compressor not turning on?

There are a few reasons why your compressor might not be turning on. The most common reason is that the power to the unit has been turned off. Other potential causes include a blown fuse, a tripped circuit breaker, or a defective thermostat.

If you suspect that the power to the unit has been turned off, check the circuit breaker or fuse box for signs of damage. In case you find that the power is off, turn it back on and see if the compressor starts up.

If the power is on and the compressor still isn’t working, try resetting the thermostat. You can also seek the help of an expert.

What are the Causes of Air Conditioner compressor problems?

The most common cause of an air conditioner compressor failure is simply age and wear and tear. Over time, the compressor will begin to break down and will eventually need to be replaced.

Other causes of compressor failure include lack of maintenance, improper installation, and electrical problems. If your compressor is not turning on, it could be due to one of these issues.

The Solution

  • If your split AC compressor isn’t turning on, the first thing you should check is the power supply
  • If the unit is plugged in and the breaker hasn’t tripped, then you’ll need to check the wiring
  • Once you’ve confirmed that the power is flowing to the unit, take a look at the thermostat to see if it’s set properly
  • If everything looks good so far, then it’s likely that there’s an issue with the compressor itself
  • You can try resetting it by turning off the power and waiting a few minutes before turning it back on
  • If that doesn’t work, then you’ll need to call a professional for help.

Helpful Tips

If your split AC compressor isn’t turning on, there are a few things you can do to try and fix the issue. First, check to make sure that the power is turned on to the unit. Next, check the thermostat to see if it is set low enough for the compressor to turn on.

If neither of those is the problem, then it is likely an issue with the compressor itself and you will need to call a technician. In the meantime, you can try running a fan next to the unit to help circulate air.


Some questions that people ask mostly related to the compressor problems are discussed below.

Why did the compressor suddenly stop working?

Compressor stops due to various reasons. It includes air leakage, oil leakage, or any broker part inside of it. If you can not do it yourself, then get it checked by an expert. He might guide you better in this regard.

Why my AC compressor is being killed?

Your compressor might be killed because of an Excessive Refrigerant Charge. It may destroy the system completely because of the phenomenon known as liquid slugging. It damages your compressor entirely.

Also read: Split AC Compressor Not Working But Fan Is Running-Ultimate Solution


In conclusion, if your split AC compressor is not turning on, there are a few things you can check and do to troubleshoot the issue. First, make sure that the power is turned on and that the circuit breaker has not tripped.

After that check your thermostat to see if it is properly set. Finally, if all else fails, you may need to call a professional to take a look at your unit. Leave a comment if the problem was solved.

Leave a Comment