What is the purpose and function of the low pressure and high pressure switches?
What is the purpose and function of the low pressure and high pressure switches?
A high pressure switch (HPS) and a low pressure switch (LPS) are protective devices for the compressor and refrigeration circuit. The high pressure switch monitors the system for an inoperative outdoor motor, and/or a dirty/restricted condenser (outdoor) coil.
What line is the high pressure switch on?
The high-side switch is located on the smaller of the two air conditioning lines close to the radiator on the passenger side of the vehicle. The low-side switch will be located on the largest diameter air conditioning line or on the side of the accumulator (round container) on the passenger side firewall.
Where are the low and high pressure switches on a car?
The low-pressure side switch is found before the AC compressor, while the high-pressure switch comes after the compressor. Most AC pressure switches are found within the engine compartment, but some manufacturers put them elsewhere.
How to tell if your AC pressure switch is bad?
1 When The Compressor Fluctuates The first symptom which can answer the question “how to tell if AC pressure switch is bad”. 2 When It Is Not Getting Cold Enough Another AC pressure switch symptom is not getting cold enough. 3 Or If The AC Does Not Work At All
How does an AC high pressure switch work?
AC high pressure switch and low pressure switch monitor the pressure of the refrigerant on both the low and high pressure side of the system. AC splits into two halves, one is low pressure half and the other is high pressure and both sides are equipped with an AC pressure switch.
Why is my high pressure switch not working?
Most common cause is a dirty condenser coil. just because the outside looks clean, don’t forget that some units have splitcondenser coils and the inner coil could be dirty. where is the high pressure switch located?
What’s the difference between a high and low pressure switch?
There is a high side pressure switch, and low side pressure switch, and they both serve to monitor the system for pressure faults that can damage the compressor. When the pressure is too low, the compressor risks damage due to running with low oil. When it is too high, the compressor is at risk of overheating and becoming damaged.
How can I find the high pressure switch?
Locating the high- versus low-pressure switches can be known by the pressure lines. Usually, high-pressure lines are larger than small pressure lines. Therefore, if you are looking to replace the high-pressure switch, look for large pipes under the hood and follow these lines to locate the pressure sensor.
Where are the low and high AC pressure switches located?
The low-pressure side switch is found before the AC compressor, while the high-pressure switch comes after the compressor. Most AC pressure switches are found within the engine compartment, but some manufacturers put them elsewhere. A look in your service manual will show you the appropriate location for your model. AC Pressure Switch Function
1 When The Compressor Fluctuates The first symptom which can answer the question “how to tell if AC pressure switch is bad”. 2 When It Is Not Getting Cold Enough Another AC pressure switch symptom is not getting cold enough. 3 Or If The AC Does Not Work At All
