Air conditioning

AIR CONDITIONING

DESCRIPTION

The air conditioning (A/C) system fitted to the Defender 50LE operates independently of the standard heating and ventilation system. Controlled by 2 switches mounted in the centre of the fascia, the A/C system will only operate when the engine is running and the blower control is in at least position 1.

The blower control is a 3 position switch, and works in conjunction with the temperature control. Temperature control is by a variable resistor. The cooled and dehumidified air produced by the A/C system is directed through vents located in the lower fascia bezel.

The A/C system can be used in conjunction with the standard heating and ventilation system. By combining the two separate systems, virtually any required interior condition can be met.

OPERATION

Feed from the positive battery terminal is connected to the engine compartment fuse box (C1217-1) by a brown wire. Current flows across fusible link 1 and fusible link 2, which are connected in series. From fusible link 2 (C570-1), current flows to fuse 15 and 16 (C581-5) of the passenger compartment fuse box on a brown/purple wire. Fuses 15 and 16 are connected in parallel.

Fuse 15 (C581-10) supplies a feed to the blower relay switch (C817-30) on a brown/slate then purple/slate wire. Fuse 16 (C581-12) supplies a feed to both the condenser fan relay switch (C1212-30) on a brown/white wire, and the compressor clutch relay switch (C1213-30), also on a brown/white wire.

When the ignition switch is turned to position ’II’, current is allowed to flow from the ignition switch (C90-1) to fuse 17 (C581-13) of the engine compartment fuse box on a white wire.