Subsequently, one may also ask, what is low pressure switch in AC?
The AC pressure switch is a safety switch that is mounted on both the high and low sides of the air conditioning system. It monitors the pressure of the refrigerant on its respective side of the system. When the pressure is too low, the compressor risks damage due to running with low oil.
Beside above, where is the low pressure switch located? The low side service valve is located in the line that runs from the compressor through the evaporator (firewall) and up to the condensor on the low pressure (suction) side of the system.
Then, how do I know if my low pressure switch is bad?
The most common symptom of a bad AC pressure switch is most likely that you will notice that the AC compressor is cutting on and off rapidly when you are idling your car. These switches between on and off can be noticeable on the engine’s rpm, and you may see or feel fluctuations from it.
What causes low pressure lockout?
When a unit cycles or locks out on the low pressure switch, what should you look for? the most common cause is low air flowacross the evaporator. look for dirty filters, dirty evaporator coil, dirty blower wheel.