Six Common Reasons for Failure of the Electric Air Conditioning Scroll Compressor to Start or Run

The failure of the new energy electric air conditioning compressor to start and not operate is also one of the typical failures of the air conditioning system of pure electric vehicles. Unlike the failure of the air conditioning compressor in the air conditioning system of traditional fuel fueled vehicles, the main reasons for the failure of the air conditioning compressor are the failure of the refrigerant circulation system and the failure of the electronic control system. In the air conditioning system of pure electric vehicles, the air conditioning compressor is driven by a high-voltage power battery as the power source. In addition to the same factors as in traditional fuel fueled vehicles, the main reasons for the failure of the air conditioning compressor also involve the failure of the high-pressure system. When it comes to the circuit inspection and handling of the high-voltage system, it is necessary to operate it by professional maintenance personnel who have received training in the operation of the vehicle's high-voltage system and are certified. During operation, safety precautions should be taken, and the high-voltage system can only be powered down in strict accordance with the safety maintenance operating procedures before proceeding. The six common reasons why the electric air conditioning scroll compressor fails to start or operate are as follows:
1. Check whether the air conditioning compressor reports overpressure, overcurrent, and overheating faults, and the controller protects and shuts down.
2. Check the temperature sensor and tube temperature sensor for open circuit or poor contact under refrigeration condition, and for short circuit under heating condition.
3. Low voltage terminal wiring error.
4. The compressor controller power supply is open or shorted.
The compressor controller capacitance is damaged.
6. The DC high-voltage connector is damaged.