Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Climate Control - Air Conditioning

COMPONENT LOCATION - VEHICLES WITHOUT AN INTERNAL HEAT EXCHANGER ( IHX )

COMPONENT LOCATION - VEHICLES WITHOUT AN INTERNAL HEAT EXCHANGER ( IHX )

  1. Refrigerant pressure sensor
  2. Thermostatic eXpansion Valve (TXV)
  3. Evaporator
  4. Receiver/Drier
  5. Condensor
  6. Air Conditioning (A/C) compressor
  7. Low pressure line
  8. High pressure line
  9. Low pressure servicing connection
  10. High pressure servicing connection

COMPONENT LOCATION - VEHICLES WITH AN INTERNAL HEAT EXCHANGER ( IHX )

COMPONENT LOCATION - VEHICLES WITH AN INTERNAL HEAT EXCHANGER ( IHX )

  1. Refrigerant pressure sensor
  2. Thermostatic eXpansion Valve (TXV)
  3. Evaporator
  4. Receiver/Drier
  5. Condensor
  6. Air Conditioning (A/C) compressor
  7. Low pressure line
  8. High pressure line
  9. Low pressure servicing connection
  10. High pressure servicing connection

Overview

A choice of Air Conditioning (A/C) systems are available with features to enhance the performance for second and third-row seat passengers.

The system is available in two forms, with an optional rear air conditioning unit.

  • Manual air conditioning system.
  • Two-zone auto system, with separate LCD display controls for driver and front passenger.
  • Vehicles with 5+2 seating, an optional auxiliary air conditioning unit for third row passengers is available, with controls for temperature and fan speed.

    For additional information, refer to: Auxiliary Climate Control (412-02 Auxiliary Climate Control, Description and Operation).

The rear air conditioning has a child lock function which disables the rear fan speed control switches. This is feature is accessed from the Touch Screen.

The A/C system transfers heat from the passenger compartment to the outside atmosphere to provide the climate control assembly with dehumidified cool air.

The A/C system is a sealed closed-loop system, filled with refrigerant as the heat transfer medium. Refrigerant oil is added to the refrigerant to lubricate the internal components of the A/C compressor:

  • R1234yf refrigerant is used in USA and Canada (NAS market); systems with an Internal Heat Exchanger (IHX) installed.
  • R134a refrigerant is used in the ROW markets; systems without an Internal Heat Exchanger (IHX).

For additional information, refer to: Specifications (412-01 Climate Control, Specifications).

The compressor is a variable displacement unit, where the displacement (flow of refrigerant) is controlled to match the thermal load of the evaporator. The type of compressor fitted will depend on engine variant, see below.

The operation of the A/C system is controlled by the Automatic Temperature Control Module (ATCM).

For additional information, refer to: Control Components (412-01 Climate Control, Description and Operation).

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