DAF 95XF Тепловентилятор / системы кондиционирования воздуха

20. HEATER FAN/ AIR-CONDITIONING SYSTEM
A voltage is applied to the heater fan switch
(C588) through the heater fan fuse (E031).
Depending on the position of this switch, the fan
will start operating.
The switch has five (5) positions:
Off: Heater fan (B015) off.
Position 1: Fan at lowest speed setting (wire
4650), supply of heater fan (B015)
through three (3) resistors.
Position 2: Fan at somewhat higher speed
setting (wire 4651), supply of heater
fan (B015) through two (2) resistors.
Position 3: Heater fan in next to highest speed
setting (wire 4652), supply of heater
fan (B015) through one (1) resistor.
Position 4: Heater fan in highest speed setting
(wire 4653), relay G065 now
activated. This relay connects the
supply (wire 1201) to wire 4654 and
the heater fan. The relay is only
activated in position 4 (full supply
voltage heater fan B015).
AIR-CONDITIONING SYSTEM
SHORT DESCRIPTION OF THE RECIRCULATION VALVE
If switch C802 (air-conditioning recirculation
valve) is activated, a voltage is applied to point 1
of relays G257 and G258. As a result, pin 2 of
recirculation-valve motor B252 is connected to
earth and simultaneously pin 1 of B252 is
connected to the positive voltage. This will
activate motor B252 and close the recirculation
valve.
If C802 is not activated, no voltage is applied to
both relays G257 and G258. As a result, the
direction of flow of the current through motor
B252 is reversed and the recirculation valve will
open.


SHORT DESCRIPTION OF THE AIR-CONDITIONING SYSTEM
When the air-conditioning system is engaged
with switch C760, a voltage is applied to both
relay G279 and G267 through wire 4655, switch
E508 (air-conditioning compressor temperature
switch), E509 (air-conditioning high/low pressure
operating switch) and wire 4657.
As a result, the heater fan (B015) will start
operating in position 1 and the air-conditioning is
activated.
VARIANTS
Location
33 A round 4-pin black connector is attached
to the wiring harness coming from B043
(air-conditioning compressor). This
connector is not provided with a connector
number and is installed at the front (upper
centre) of the engine block.
SEE THE SYSTEM MANUAL FOR MORE
INFORMATION

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