What does AC low pressure switch do?

What does AC low pressure switch do?

The low pressure switch monitors the refrigeration system for a loss of refrigerant charge, and may also be helpful in stopping the evaporator (indoor) coil from freezing up due to a dirty filter or low airflow over the coil.

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.

What happens if your AC pressure switch is too low?

If the pressure is too low (AC low pressure switch), the compressor risks damage due to running with low oil. If it is too high (AC high pressure switch), the compressor is at risk of overheating and becoming damaged.

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. A look in your service manual will show you the appropriate location for your model.

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.

What happens when an auto air conditioner switch fails?

In case of an auto air conditioner pressure switch fails, it transfers a signal to the system, and as a result, the AC turns off. The faulty pressure keeps your car’s aura from getting cool down. The system gets shut off and it does not reach the specific temperature. Thus, if it is getting longer to cool the interior than usual, it may be a sign.