Posts Tagged: AC Compressor turns on and off

AC Compressor Short Cycling Explained

What Causes AC Compressor Short Cycling Quick Summary When you hear your car’s AC compressor turn on and off repeatedly every few seconds, you’re dealing with a short AC cycling problem. The most common cause of AC compressor short cycling is low refrigerant. Here’s how that happens: • The compressor clutch engages. • The compressor starts pumping refrigerant vapor. • Since the system is low on refrigerant, the pumping causes a rapid pressure drop. •  The pressure drop causes the low-pressure switch to turn off power or ground to the … Read More