Car air conditioning is extremely necessary in hot climates, such as in a desert city region. Many components comprise the intricate cooling system, including the high pressure switch on the air conditioning compressor.
A high pressure switch is a safety mechanism that shuts off power to the air conditioning compressor if pressure levels exceed what the compressor can withstand. This prevents the compressor from becoming damaged from excess pressure .
Typically, the high pressure switch is located on the rear, or end, of the compressor. This keeps it away from the discharge and suction lines that may influence the functioning of the switch, resulting in incorrect pressure readings.
The high pressure switch works with the low pressure switch. If the pressure level becomes too low, due to low levels of refrigerant, the air conditioning compressor will shut off to prevent compressor damage. Having both switches working together keeps the air conditioning system working smoothly and within manufacturer's specifications.
