Your Position :
Home » News » Why My Truck Refrigeration Unit Not Working–Common Failure of Truck Refrigeration Unit

Why My Truck Refrigeration Unit Not Working–Common Failure of Truck Refrigeration Unit

Date: 2022-09-16
Read: 149 次浏览


It’s a nightmare for all truck drivers to be trapped in a hot cab on a hot summer day. If the air conditioning isn’t cold, something is wrong and you should take action to fix it.


The 5 most common truck air conditioning problems are:

(1) Coolant Leakage

(2) Condenser Blockage

(3) Condenser Broken

(4) Cooling Fans Malfunction

(5) The Compressor Breakdown


1Coolant leakage

Refrigerant leakage is one of the most important issues affecting refrigeration unit cooling capacity. The easiest place to spot leaks is at the refrigeration unit’s hose connections. The oil can collect around these ports, which may be the cause of the leak. You can use sealant to fix leaky joints, which will help prevent water from coming into the joint and causing damage. However, pinpointing the location of a leak can be difficult, as any part of the refrigeration unit can leak refrigerant. If you don’t know the exact location, it’s best to get help from a professional technician.


2. Condenser Blockage

Condensers are important pieces of the air conditioning system, used to compress and cool refrigerants. Since the condenser is located outside the cab, dirt and debris on the road can block the condenser. This can quickly cause the truck’s air conditioning to malfunction and release hot air. At the same time, it’s easy to visually see if something is blocking the condenser, and cleaning the condenser can easily solve the problem.


3. The Condenser Broken

If you check the capacitor and it appears to be clear, it could be that something is blocking it. If a visual inspection finds a hole or damage in the capacitor, the best solution is to replace it with a new one.


4. Cooling Fans Malfunction

The cracks in the fan may be caused by dirt on the road. If the fan is not working, it may be because the condenser has not cooled properly, which might be because the fan is not working. To check if a fan is defective, you can also visually inspect it and, if necessary, replace it. This is the only true way to solve the problem. Other common causes of cooling fan failure include blown fuses and other electrical issues.


5. The Compressor Breakdown

The compressor helps to power your refrigeration unit. If the compressor fails, the refrigeration unit will not work. The most common cause of compressor failure is not using it for a long period of time. If you restart the AC system after a long time, you may receive an electric shock and may malfunction. As the old saying goes, if a knife is not sharpened, it will eventually rust. To counteract this situation, you can run the air conditioning system every three weeks for about 15 minutes. This keeps the compressor fresh and functional, and also helps it last longer.


As the top manufacturer of refrigeration units supplier,we can provide all kinds of refrigeration units, for trucks, vans, trailers and portable/mobile cooler boxes and mobile cooling room. Please email to, if you are ineterested to our refrigeration unit products,please let us know.
Copyright 2021 Henan Kingclima Industry Co., Ltd. All Rights Reserved.