4
*The connection of outputs 2-5 directly to the Power, without a load, is not
permitted. The connection of outputs 1 and 6 directly to the Ground, without a
load, is not permitted
The signals to be necessarily connected marked in Italics
X1.2 Heater_off-
1
The input can be used to switch the heater off, operated in pre-heat mode, by the
impulse of negative polarity (the input
Hea
in that case has to be
connected to the Power). The heater is stopped by the leading edge of the impulse.
If the heater is idle, negative impulse on this input cancels the program start of the
heater, programmed by DIS. This input is suitable for the most alarm systems and
GSM-modules connections in order to control the heater remotely.
X1.3 He
1
The input can be used to switch the heater on by the impulse of positive polarity
(the input
Heater_on
- in that case has to be connected to the Ground). The heater
is started by the leading edge of the impulse.
X1.4 Heater_on-
1
The input can be used to switch the heater on by the impulse of negative polarity
(the input
He
in that case has to be connected to the Power). The heater is
started by the leading edge of the impulse. This input is suitable for the most alarm
systems and GSM-modules connections in order to control the heater remotely.
X1.5 Button
The input for multi-functional button connection. The current function of the
button depends on heater status, ignition status and engine status (see Table 4 for
more details)
X1.6 Boost
The input for external control of boost heat mode. It enables or disables boost heat
mode depending on setting 1.1. External switch can be connected to the Boost
input in order to quick manage of boost heat mode.
X1.7 RC_in
The input can be used to switch the heater on/off by the impulse of positive
polarity. The heater is turned on by the leading edge of an impulse and is turned off
by the trailing edge of the impulse. The specialized remotes such as Smart Start,
Easy Start and Telestart can be connected to this input
1
. GSM-modules with a
potential signal on the control channel also may be connected to the input.
X1.8 Ground
1
X1.9 Power +12V
1
X2.1 RC_out
The output is used to inform Defa VU module that the heater has been switched
off. When the heater is switched off, the impulse of positive polarity with 0.5
second duration appears on the output. When the engine is running, the output is
permanently pulled up to the Power. This signal is used for Defa Smart Start only.
