5 common reasons behind AC compressor not working

Compressor of AC not working

A compressor is the heart of an air conditioner system. It is the component that is responsible for cooling your room. It is located in the outside box  along with the condenser and fan. This is also called the outer unit of AC system. A compressor is a reliable component of AC. So when it goes bad it indicates that there is a serious underlying fault that needs to be corrected immediately.

There are various reasons behind AC compressor not working:

  • Excess refrigerant flow : The compressor’s job is to compress the low pressure cool refrigerant into high pressure hot gas. Excess refrigerant means excess high pressure. This high pressure build up inside the compressor makes it go bad.
  • Lack of lubrication: A compressor needs lubrication for proper operations. Lubricating oil is carried through the AC system and compressor by the refrigerant. The oil will not circulate without refrigerant. When the refrigerant is undercharged or leaks then the lubrication oil also leaks along with it. Less refrigerant means lack of lubrication which damages the compressor.
  • Poor heat dissipation: The compressor compresses the cool low pressure gas into high pressure hot gas. This process produces heat. A clogged radiator or dirt covered fins or faulty fan (the ones responsible for keeping the outer unit cool and well ventilated) result in poor heat dissipation from the outer unit. This causes the temperature and pressure to shoot up and damage the compressor.
  • Compressor contamination: Over time dust, dirt and impurities get deposited inside the compressor. This contamination hinders in the proper functioning of compressor. It also makes the compressor go bad.
  • Over use & frequent on-off : Frequent on-off of air conditioner hinders in the working of compressor. Sometime long and continuous hour  of operation heats up the outer unit. This overheating has adverse effect on the compressor.

It is a common practice that when the compressor fails you replace it with a new one. But before making the replacement, make sure that you find out the actual cause of failure and repair it. If the actual causes of failure i.e. refrigerant over flow, lack of lubrication, heat dissipation etc. are not corrected, then within no time your new compressor will also go bad.

READ ALSO:  6 most common AC installation mistakes to be informed about

If you’re considering getting a new AC, do take a look at these amazing products available on Amazon.in:

  1. AmazonBasics 1.5 Ton 5 Star 2020 Inverter Split AC (Copper Condenser, Advanced Motor, White) 
  2. Carrier 1.5 Ton 5 Star Inverter Split AC (Copper ESKO NEO HYBRIDJET INV R32CAI18EK5R39F0 White) 
  3. LG 1.5 Ton 5 Star Dual Inverter Split AC (Copper, KS-Q18HNZD , White, Hi Grooved Copper)
  4. Daikin 1.5 Ton 5 Star Wi-Fi Inverter Split AC (Copper FTKR50TV White) 
  5. Godrej 1.5 Ton 5 Star Inverter Split AC (Copper GIC 18HTC5-WTA White) 
  6. Voltas 1.5 Ton 5 Star Inverter Split AC (Copper 185VSZS White) 

For AC compressor change or compressor repair connect with Mr.Right.

Stay Healthy! Stay Happy!

Team Mr. Right

P.S. – These DIY recommendations will help you a lot if you wish to Service your Window AC on your own.

  1. Heebo Air Conditioning Cleaner & Purifier 450 ML: Pack of 2 
  2. Stainless Steel Fin Comb Brush for AC Blade Radiator Cooling Straightening Cleaning Tool 
  3. Real Life Solution Plastic AC Fin Comb Set, Straightener, Cleaner, Condenser, Evaporator, Cleaning Tool (Blue)
  4. KetZeal Plastic Cleaning Tool Kit Wire Brushes with Brass, Nylon, Stainless Steel Bristles (Set of 3)

For Better cleaning you can consider these Water Spray Guns available online:-

  1. Voroly 7 Mode High Pressure Spray Gun with 1/2″ 3/4″ Hose Connector 
  2. GOCART WITH G LOGO Metal Trigger Brass Nozzle Water Spray Gun 
  3. High Pressure Water Spray Gun 
  4. LALA LIFE SGL Metal Copper Home High Pressure Water Spray Gun 
  5. Glive Plastic 8 in 1 Turbo Water Spray Gun 
  6. Sajani Water Spray Gun

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6 Comments

  1. 1

    It’s great to create a blog like this that is clarified by the information provided to its readers. Hopefully, just continue the meaningful narrative of how to repair an AC compressor.

  2. 2
  3. 3

    Dear sir,i have Samsung 3 star split 1.5ton ac this product has one problem it’s compressor sometime work on starts but sometimes not start for a whole day or night ,so please tell me about this problem. I have changed this pcv also by company but problem not resolved. Thank you.

  4. 4
  5. 5

    Some other common reasons for AC compressor is not working include:
    1. Blocked suction lines
    2. Dirty condenser coils
    3. Incorrect suction line size
    4. Low refrigerant charge
    5. Electrical problems

  6. 6

    Blue star5.5tr AC compressor not switching on from remote fan working but compressor not switching on checked the PC board it’s OK.

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