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Digital air- conditioner controller KR- 454
S7
S8
S9
S10
INDUSTRIE-ELEKTRONIK
running. The fan and the air- conditioner are always switched off
when you switch off the ignition. The motor valves and flaps
remain in position. In Automatic mode the passenger compartment
temperature is automatically regulated to the temperatures set
with the setpoint keys using the components of the system (fan,
air-conditioner, heater).
As a special function, you can switch off automatic speed control
of the roof duct fans with the ventilation keys (S7/S8). The fan
speed is then permanently set to 40 % (stage I - S7) or 100 %
(stage II - S8) as is the case in Ventilation mode (f.ex. to vent
the vehicle quickly).
VENTILATION MODE, stage I
When you press key S7, the motor valves of the roof duct heater
close and the roof duct fans are switched on to stage I (approx. 40
%). This ventilation mode is possible even without the engine
running and only with the ignition switched on. The incorporated
undervoltage protection facility in the unit avoids exhaustive
discharge of the vehicle battery.
VENTILATION MODE, stage II
Function as with key S7, but ventilation capacity 100 %.
This key operates only with the engine running (alternator).
NOTE: The fans are increased slowly and in controlled manner to
100% fan capacity in order to avoid a high making current! (this
takes approx. 15 sec.!)
Flap "Fresh air/circulating air" passenger compartment
You can use this key when on the move to switch the ventilation
system to circulating air, and an automatic function switches back
to fresh air after 10 min.
In addition, the system switches over automatically to circulating
air at temperatures above 28°C and below -20°C (according to
the function chart).
AUXILIARY HEATING SYSTEM
The auxiliary heating system is started up when you press this
key. Operation of the auxiliary heating system is indicated by the
LED in the key.
Control and regulating systems for vehicle air conditioning
D-71691 Freiberg a.N.,
Phone: +49 7141 / 68877 - 0
Issue: October 1998 - Copyright (C) BADER GmbH - Alterations reserve
Siemensstr.21
Fax: +49 7141 / 68877 - 39
page:
10
of:
42
04541530.SDW
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