What is AC high pressure switch?

What is AC high pressure switch?

Hear this out loudPauseA 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.

Which knob is high pressure on AC?

Hear this out loudPauseThe blue hoses, gauge, and valve knob represents the low pressure side of the air conditioning system, and red ones represent the high pressure side.

How fast should AC pressures equalize?

Hear this out loudPauseHaving AC issues and it takes 120 minutes for high and low pressure to equalize. Initial Static pressure is 100 psi on both sides. At startup low goes to 35 psi and high to 200 psi.

What causes high pressure switch trip?

Hear this out loudPauseThe most common cause of a refrigerant high-pressure switch tripping in the wintertime is lack of airflow across the indoor coil. One of the signs of lack of airflow is a high temperature split across the indoor coil. Inspect the filter, not just if it is dirty but restrictive.

Where is the low pressure AC switch located?

The low pressure switch is located on the air conditioning line in the right rear of the engine compartment near the firewall.

Where is the low pressure AC switch?

The low pressure switch (also known as the AC compressor switch) will be under the hood, it will be located in the low side AC line from the AC compressor, this is the larger of the two lines from the AC compressor.

Where is the AC compressor relay switch located?

Locate the air conditioner clutch relay by tracing the wire connection from the air conditioner compressor plug-in to the relay. In most cases, the relay is mounted on the fender well or fire wall . The relay in a typical A/C control installation has a three-wire connection.

Where is the AC low pressure valve located?

The low-pressure valve is located on the AC hose that runs from the compressor to the accumulator. Attach the hoses from the manifold gauges to the service valves.