Digital air- conditioner controller KR- 454
5.6. ENCODING WITH VEHICLES WITHOUT AIR-CONDITIONING
If the vehicle has no air-conditioning the air-conditioner must be encoded
accordingly. To do this fix a 24V-signal terminal 15 (ignition) to the control
input air-conditioner check-back (plug X2 Pin 9) tightly.
(e.g. wire bridge X10 Pin 2/5)
With its system check the air-conditioner controller recognizes automatically if it's
any special model without roof duct heating or convector heating. The controller
finds f. ex. the connected roof duct sensor and looks for the corresponding roof
duct valve. If there is no valve the controller gives an error message. If there is no
sensor
and
valve the unit realizes and stores the control circuit as not existing.
(Analogous the convector control circuit). The convector key is without any function
if the unit has recognized that the convector control circuit system is not existing
(no sensor
and
no valve).
That is why you can equip either the front or the rear convector control circuit
without changing or setting the unit.
5.7 SPECIAL FUNCTIONS OF THE DISPLAY
If you press key
S7
within 5 seconds after pressing keys
S12
/
S13
(passenger compartment temperature) the current roof duct
temperature is displayed for a short period of time. You can see a
“d“
on the left side of the display with the temperature value in °C
next to it.
If you press the convector key equally, you can see the current
convector temperature
“c“
in °C on the display.
The display switches back to the basic function outside
temperature after 5 seconds.
By lighting up individual decimal dots on the LED-display the air-conditioner controller
informs about different operating modes of the air-conditioning.
With ignition on the decimal dot of the second digit blinks. This dot
also blinks at
undervoltage
(< 22,5V), however with short blink
pulses. If you press any key at undervoltage you can see a “
U
“ on
the display.
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: 21
of:
42
04541530.SDW
Issue: October 1998 - Copyright (C) BADER GmbH - Alterations reserve
