Digital air- conditioner controller KR- 454
5.2 MAXIMUM/ MINIMUM SETTING OF THE SETPOINT CONTROLS,
PASSENGER COMPARTMENT TEMPERATURE (OVERRIDE-MODE)
S17 S18
Override - mode heating (uncontrolled heating)
Set setpoint temperature to max. 28°C with key
S18
/
S20
and
release it. Then press key
S18/S20
longer than 2 seconds; you
can then see an
“H“
on the display - the
system heats in an
uncontrolled
manner.
All
actuators
of
the
heating
system
(motor
S19 S20
valves and convector valves) are fully
opened. This operating
mode is used for bleeding the water
circuit for instance.
Override - Mode cooling (uncontrolled cooling)
Set setpoint temperature to minimum 18°C with
key S17/S19
and
release it. Then press key
S17/S19
longer than 2 seconds; you
can see a
“C“
on the display - the system cools in an uncontrolled
manner. In this operating mode the air-conditioning system is
switched on continuously and no regulation function is performed
(e.g. in order to fill the system).
You leave the automatic control range of the unit in Override-
mode. In this case the red LED in the auto- and convector key
blinks.
If you want to finish the Override-mode you can set the
temperature to normal with keys
S17
or
S18
.
5.3
Minimum speed setting of the roof duct fans
-see service-/ test program No. 11 and 12
INDUSTRIE-ELEKTRONIK
Control and regulating systems for vehicle air conditioning
D-71691 Freiberg a.N.,
Siemensstr.21
Phone: +49 7141 / 68877 - 0
Fax: +49 7141 / 68877 - 39
page: 19
of:
42
04541530.SDW
Issue: October 1998 - Copyright (C) BADER GmbH - Alterations reserve
