Fiat Ducato - Activation of the Heating System

F0N0150m
fig. 54
(In winter) the additional heater provides heat, maintains
the temperature and circulates the engine coolant for the
preset time in order to ensure the optimum temperature
conditions of the engine and the passenger compartment
when the engine is started up.
The heater can operate automatically when programmed
with a digital timer or manually by pressing the ‘immedi-
ate heating’ button on the timer.
After heater activation, either programmed or manual, the
electronic control unit operates the liquid circulation pump
and ignites the burner in accordance with the preset, con-
trolled procedures.
The circulation pump output is also controlled by the elec-
tronic control unit in order to minimise the initial heat-
ing time.
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DASHBOARD
AND CONTROLS
SAFETY
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TECHNICAL
SPECIFICATIONS
INDEX
When the system operates, the control unit turns on the
passenger compartment heater unit fan at the second
speed.
The thermal power of the boiler is regulated automatically
by the electronic control unit depending on the temper-
ature of the engine coolant.
IMPORTANT If heater is equipped with a thermal limiter
that cuts off combustion in the case of overheating due
to insufficient coolant/coolant leaks. In this case, after re-
pairing the fault in the cooling system and/or topping up
the fluid, press the program selection button before turn-
ing the heater back on.
The heater can turn off spontaneously due to misfiring
after start-up or because the flame goes out during oper-
ation. In this case, carry out the turning off procedure
and try to turn the heater back on. If it still does not work,
consult a Fiat Dealership.
Activation of the heating system
When an automatic climate control system is present, the
control unit sets the air temperature and distribution when
the heater is turned on from the park position. When
a manual heater/climate control is present, to obtain max-
imum heater efficiency, check that the passenger com-
partment heating/ventilation temperature adjustment knob
is in the ‘hot air’ position.
To prioritise passenger compartment pre-heating, set the
air distribution knob to the
©
position.
037-122 DUCATO LUM EN 11-02-2010 14:26 Pagina 66