What Causes the Air Conditioning Refrigerant to Not Circulate?
2 Answers
Air conditioning refrigerant not circulating is usually caused by a blockage in the capillary tube or throttle components. Below is relevant information about air conditioning refrigerant: 1. Automotive Refrigerant: There is no fixed replacement cycle for automotive refrigerant. This depends on the specific usage conditions and cooling performance of each vehicle's air conditioning system. If the car's air conditioning shows poor cooling performance, an inspection is necessary. 2. Low Refrigerant Level: If the issue is due to low refrigerant levels, timely replenishment is required. With proper vehicle maintenance, topping up is generally unnecessary for three to four years.
I've encountered this issue and repaired many cars before. The lack of refrigerant circulation in the air conditioning system is usually caused by problems with key components. The most common issue is refrigerant leakage, where aging or damaged pipe fittings lead to insufficient pressure, preventing circulation. A faulty compressor can also fail to pump the refrigerant, so check the belt tension or listen for abnormal noises. A clogged expansion valve can trap refrigerant in the system, blocking flow. Air or moisture entering the system can form bubbles, hindering normal circulation. It's best to use a pressure gauge to measure high and low pressures—if it's low, there might be a leak to fix; if it's high, there could be a blockage that needs clearing. Before turning off the engine after driving, let the air conditioning run for a few minutes to keep the compressor working and prevent seizing. In summer, inspect the system more frequently to avoid major issues—fixing small problems saves both money and hassle.
