IsReg2001NC-0 Rev. 051011-2
20-30
Changeover switch operation
English
Operating description
The changeover switch supplied with the kit has one button, 7 LEDs and an internal buzzer.
BUTTON
This is used to select either the petrol or the gas fuel supply. Press the button one time to switch to gas and
press it again to return to petrol.
GREEN LED FUNCTIONS
Rapid flashing –
the control unit is prepared to start with petrol and switch automatically to GAS.
Steady on with yellow LED off –
Gas operation.
RED LED + 4 GREEN LED FUNCTIONS
Fuel level indicator;
reserve RED LED, while the 4 GREEN LEDS indicate the fuel level (1/4, 2/4, 3/4, 4/4).
The indicator is illuminated only when the gas mode is selected.
YELLOW LED FUNCTIONS
Steady on with Green LED off –
PETROL operation.
Steady on with flashing Green LED –
the control unit is prepared to start with petrol and switch automati-
cally to Gas.
LOW GAS PRESSURE PETROL CHANGEOVER
When the changeover switch indicates the fuel tank is in
reserve
and the gas pressure drops below a set value,
the control unit automatically switches over to gas. This prevents the engine from running with an excessively
lean carburetion, thus damaging the catalyser. Before returning to gas operation, fill up. The changeover switch
signals the
changeover to petrol due to low gas pressure
by activating the internal buzzer, illuminating
the YELLOW petrol operation LED and by illuminating the RED LED in an alternating pattern with the 4 GREEN
LEDS. To make the changeover switch return to normal operation press the BUTTON one time; the YELLOW LED
will remain on to indicate that the car is operating with petrol and the buzzer turns off.
DIAGNOSTIC ERROR FINDING
The switch reports a finding of a diagnostic error by turning on the YELLOW fuel operation LED, by making the
GREEN GAS LED blink rapidly and by sounding a warning with the internal buzzer. To put the switch back into
normal operation, press the BUTTON once. The YELLOW LED will stay on to indicate the vehicle is operating
with fuel and the buzzer will turn off.
EMERGENCY
If the car won’t start with petrol (e.g. problems with the petrol pump, etc.), it can be started directly with GAS.
To do this follow the instructions listed below:
• insert the ignition key and press the button to switch the changeover switch to gas operation;
• remove the key;
• insert the ignition key and keep pressing the button (about 5 seconds) until the GREEN LED stops flashing;
• now, start the engine without turning off the ignition key; the car will start directly with GAS;
• each time the car engine is turned off, the operation will have to be repeated to start in the EMERGENCY
condition.
WARNING!
The EMERGENCY function can be activated only if the changeover switch is illuminated when the
ignition key is turned
4 GREEN
LEDS - FUEL
LEVEL
YELLOW LED -
PETROL
OPERATION
RED LED
– EMPTY TANK
RESERVE
BUTTON
GREEN LED -
GAS OPERATION
WITH
DIAGNOSTIC
SIGNAL
