What is the AC Pressure Switch?
Your car’s air conditioning system uses a refrigerant that takes on diverse characteristics at diverse pressures. Under low pressure, the refrigerant is a gas. Under high pressure, it’s a liquid. This indicates there are technically two “sides” to the AC system – the high pressure side and the low pressure side. Both sides must monitor pressure to guarantee safe operation. One of the safety features built into modern air conditioning systems is a pressure switch – the AC low pressure switch is planned to trip if there’s a pressure-related issue on the low side, and the high pressure switch on the high side.
The AC pressure switch fundamentally turns a side of the system off if certain events take place. There are numerous origins of low or high pressure switch tripping, and not all of them include switch failure. A low refrigerant charge can cause the low pressure switch to read incorrectly. The same goes for a high refrigerant charge.
Facts to Note:
- AC pressure switch operation is generally not checked unless there is a problem.
- Many different problems can cause symptoms consistent with pressure switch failure.
How to Fix:
- The AC pressure switch is verified to see if it needs to be replaced
- The defective AC pressure switch is removed
- The new AC pressure switch is installed
- The AC pressure switch is tested for operation
- The AC is tested to ensure proper operation of the AC pressure switch
We propose having your car’s AC system professionally examined and maintained at all times. Ongoing, regular upkeep is the best way to guarantee that all components are in good operative condition, and to hone in on the actual problem causing symptoms. If you suspect your AC pressure switch is faulty or there is something else wrong with the air conditioning, have one of your expert mechanics diagnose and repair it.
Common indication you may need to change the AC Pressure Switch:
- AC does not operate
- AC compressor will not turn on
Importance of this service:
Your car’s air conditioning system isn’t essential for overall vehicle operation. Yet , it’s an essential convenience and comfort feature, particularly in areas with high summertime temperatures or humid conditions. If your AC isn’t functioning correctly, have it diagnosed by one of your expert mechanics.