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heres maintain the pressure inside the sealed aircoditioning,low,high,protect the compressor,
The dealer, NAPA or O"Reilly Auto parts.
Air con is an abbreviation for Air Conditioning, and a pressure switch is a device used to monitor the A.C. system for irregular pressures within the sealed system. There are low pressure and high pressure switches, usually normally closed, open on drop or open on rise respectively.
high pressure vapor
discharge pressure is high, suction pressure is high superheat is low and subcooling is high.
You can find the air conditioning ports on top of the air conditioning compressor. There will be a low pressure port and a high pressure port.
A pressure switch a valve that shuts off the unit when the pressure is to low or to high
You will definitely lose all of your Freon when you replace the high pressure switch. Once the high pressure switch is loosen the Freon will begin to access the system.
it does not have a high pressure switch all it has is a evaporator temp sensor/switch.
The switch had a meltdown or the high speed relay is stuck.
check to see if you have enough low side freon pressure and/or if the low pressure switch is working. bypass switch by crossing the wires of the switch with a paperclip to apply trigger voltage to the coil on the compressor,also check to see if there is voltage going to the low pressure switch,if these measures don't work,disconnect the high pressure switch to see if that switch is stuck and shutting off power thru the relay.
The low pressure connection for your 1993 Jeep Cherokee air conditioning system is located on the top of the air conditioning compressor. There is a low pressure connection and a high pressure connection, both should be labeled.