How to Solve the Problem of Car Compressor Starting and Stopping Intermittently?

[DiGrant]

Compressor starting and stopping intermittently is because the air conditioning compressor automatically starts or stops according to the set temperature, rather than running continuously. Below are the relevant explanations: 1. Compressor phenomenon: The intermittent operation of the compressor is a protective phenomenon, representing the recovery time of the compressor's thermal protector. Normally, it only takes a dozen to several dozen minutes, but after long-term use of the compressor, these values may change. 2. Reasons for protection: One reason could be a lack of refrigerant in the system, causing the compressor's exhaust temperature to trigger thermal protection. Even if there are white bubbles at the needle valve, it only indicates the presence of refrigerant in the system, but the amount and whether there is a deficiency cannot be determined. Another reason could be excessively high compressor exhaust pressure, leading to increased operating current and subsequent thermal protection due to current. There are many possible causes, such as poor ventilation of the external heat exchanger, clogged heat exchanger, poor external fan motor, etc. Another possibility is a faulty thermal protector in the compressor, which is quite troublesome and usually requires replacing the compressor.