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holes in the rear roof liner and inner panel of the tail gate apertures,
via ventilation grille with valves and rolled down door window.
Automatic temperature control
When the automatic temperature mode is on, the panel controller
calculates the required control mode, basing on the sensors signals
and internal programs, and controls the air conditioner compres-
sor after the required temperature is set by the electric air fan and
aps actuators, to provide comfortable feeling in the interior.
Air fan actuator control
When AUTO mode is ON, the control panel controls the air
fan speed, in order to obtain the required temperature. Manual
control of air current direction and switching the air conditioner
and recirculation on/off is also available.
Control panel operation mode (Fig. 3.21)
“Manual” operation mode is the main mode of the control panel.
While rotating the air fan handle 3 (Fig. 3.21) within points 1
and 8 the system switches to manual control, and the air fan speed
increases by 1 point up and down, within the points range.
When this mode is switched on, the control panel scans the
condition of the control elements (rotary switches 1, 2 and 3)
and, depending on their positions, works in accordance with the
prescribed operation algorithm, determines the condition of the
recirculation ap 4, A/C switch 7, position of the rotary switches.
“Intensive windshield heating” switches on by switch 5
(Fig. 3.21 a, b) or 11 (Fig 3.21 c), transmitting a signal to the
control panel, which generates and transmits to executing devices
the control signals needed for the control panel to switch to the
required mode.
In this mode, the control panel changes the position of the air
distribution ap to “To the window” position, air damper to posi-
tion, which corresponds to the 8th switch position 1 (Fig. 3.21).
However, rotation speed of the climate control unit fan corresponds
with 8th positions of switch 3. In this mode, the control panel does
not react to changes in positions of the rotary switches.
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