The service book IV / ALFA 12 03-9940.186
During the installation there must be observed cross-sections conductor listed in the table to avoid voltage
drop. The difference between the voltage on the battery voltage and on the heater must not be greater
than 0.3 V.
The wires C, D is connected so that it cannot be disconnected from the power supply heater (eg. when
ignition is switched off). The heater must not be connected behind the battery disconnect or.
In the event that after turning off the battery isolator will the backlight timer, it is necessary to connect them
with the two relay switching contacts (see picture).
It is appropriate to insure conductor C by additional safety fuse with rated current (see the technical part)
1. The heater
2. The battery
3. Fuse
MAINTENANCE
It is recommended to carry out a common inspection and maintenance every year before the winter
season which covers the following operations
checking the fuel piping - carry out a test of the heater
checking the electric wiring and connections to eliminate defects, if there are any
cleaning the heating air ventilator and ribs and remove accumulated deposits
After the lapse of the design life i.e. 10-year period from the beginning of operation, the heater has to be
given in charge of a competent workshop for overhaul, which covers the following work:
dismantling the heater
replacement of the motor and the heat exchanger
checking and repair or replacement of other parts regarding to their conditions
reassemble of the heater
function test and adjustment
function test of the overheating fuse
TROUBLESHOOTING
The various defects that may occur on the heater are described in detail in the document Error Messages
03-9930.99 (see Annex), their probable causes and possible remedies.
In the event of any defect, try, after switching off the red LED and reset the error code on the display, to
start the heater again. In the event of any defect, try again to run the heater. If it is reloading or frequent
occurrence of errors check the connection of all connectors inside and outside heater. Then follow the
referred instructions.
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