How Do I Know If My Truck AC Compressor Is Bad?

• Compressor not cooling

There may be a problem with the compressor, which cannot compress the refrigerant, causing the refrigerant to vaporize. So it doesn't feel cold. The air conditioner compressor plays the role of compressing and driving the refrigerant in the air conditioner refrigerant port. The air conditioner compressor is generally installed in the outdoor unit. The air-conditioning compressor extracts the refrigerant from the low-pressure area, compresses it, and sends it to the high-pressure area for cooling. The heat is released into the air through the heat sink, and the refrigerant changes from gaseous to liquid, increasing the pressure. The working circuit of the air conditioner compressor is divided into an evaporation zone (low-pressure zone) and a condensation zone (high-pressure zone). The indoor unit and outdoor unit of the air conditioner belong to the low-voltage or high-pressure area respectively (depending on the working status).

• The compressor is working abnormally

The truck air conditioner compressor starts and stops abnormally.

First, the weather is not too hot, the working time of the compressor is short, and the temperature inside the car meets the set requirements, so the compressor will start frequently.

Second, there is a lack of a proper amount of refrigerant in the cooling system. After the lack of refrigerant, the pressure of the air conditioning system will decrease. In order to protect the compressor, the high pressure will cut off the power supply of the compressor, which will also cause the compressor to start frequently.

Third, the pressure is too high, the pressure is too high and the pressure is too low, both are to protect the air conditioning system.

As a result, the compressor starts and stops frequently.

• The compressor does not work when the air conditioner is turned on

Automotive electronic system failure: After the air conditioner is turned on, the starter cannot sense the command.

Damaged air-conditioning button: This cause will directly cause the overall failure of the air-conditioning system to start.

If after inspection, it is found that the compressor cannot be started because the battery is dead, you should contact the repair shop in time for an inspection and A/C compressor replacement.

• Compressor not working

1. The failure of the circuit system will cause the car air conditioner compressor to fail to work normally. After this reason occurs, the car owner can check whether the circuit is smooth and check the temperature sensor and diesel engine stop solenoid valve.
2. The compressor is mainly used to compress and transport cold air. After a problem occurs, you can check whether there is any leakage of the refrigerant. When there is no cold air to compress or transport, it will naturally not work.
3. The inside of the compressor has suffered heavy wear and tear, making it impossible to perform normal work. Because the compressor plays a vital role in the air conditioning system, its main job is to compress the cold air and transmission, which causes the compressor to be in a state of high-speed rotation for a long time.
4. The plug of the control circuit of the sub-air conditioner compressor is loose, resulting in poor contact, the voltage supplied to the electromagnetic coil drops, and the current is unstable, causing the electromagnetic clutch of the air conditioner compressor to sometimes engage and sometimes separate.