NRF 38949 Air conditioning pressure switch

23.43

      • Number of pins:3
      • Thread Size:M10x1,25 Female
      • Voltage [V]:12
      • Refrigerant:R 134a
      • Supplementary Article / Supplementary Info Info 2:with seal ring
      • Item number:38949
      • Manufacturer:NRF
      • EAN number:8718042123763
      • TecDoc Engine Number:This characteristic varies depending on the car model.
      • Condition:New

Description

The Audi pressure switch, also known as the A/C pressure transducer, plays a crucial role in protecting your car’s air conditioning system and ensuring its smooth operation. Here’s a brief description:

Function:

  • The pressure switch acts as a safety guard, constantly monitoring the pressure of the refrigerant within the A/C system.
  • It has two main operating thresholds: a low-pressure limit and a high-pressure limit.
  • If the pressure falls below the low-pressure limit (e.g., due to a leak), the switch signals the compressor to shut off to prevent damage from running without enough refrigerant.
  • Conversely, if the pressure rises above the high-pressure limit (e.g., due to a clogged component), the switch again signals the compressor to shut off to prevent overheating and potential component failure.

Location:

  • The pressure switch is typically located in the refrigerant line, somewhere between the condenser and the evaporator, where it can effectively monitor system pressure.

Construction:

  • The switch is a small, electromechanical device with a pressure sensor and electrical contacts.
  • The sensor detects pressure changes, and the contacts open or close based on whether the pressure exceeds the set limits.

Maintenance:

  • The pressure switch itself doesn’t require regular maintenance. However, it’s crucial to address any underlying issues causing abnormal pressure fluctuations to prevent the switch from triggering unnecessarily.
  • Regular A/C system checks and refrigerant level monitoring are crucial to ensure proper pressure levels and optimal system performance.
  • If you experience issues like frequent compressor cycling, inconsistent cooling, or warning lights related to the A/C system, a qualified mechanic can diagnose the problem and determine if the pressure switch is functioning correctly.