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IT EN FR DE ES
OPERATION
MANUALLY CONTROLS
Turning the selector on the rst ventilation speed will activate the system (g. 10a).
It is possible to increase the speed of ventilation by turning the selector on the other 2 positions, without changing
the temperature of the outgoing air.
DIGITAL CONTROLS
For the management of the electronic control unit, please refer to the specic manual supplied.
If you wish to change the default temperature setting, you must manually change the thermostat installed in the
roof unit (g. 12 - 13) after removing its outer covering.
By rotating the thermostat’s knob clockwise, the temperature decreases with respect to the default setting, and
increases if you turn it counter-clockwise.
While using the cooling unit, you may experience interruptions in its operation; these are recorded and signalled
by means of the supplied led light.
Error codes are explained in the following table:
Point
Error code Cause Solution
1
Light is xed
Low pressure in the system.
The pressure switch (for low pressure) is calibrated so as
to activate when pressure falls under 2 bar; this happens
when there is a low amount of coolant (for example in
case of a leak) or when the outside temperature is less
than 5°C.
Have a specialized technician check that the unit’s circuit
is sealed and reload with R134a.
2
Light and electric
compressor are
cyclically on and o
High pressure in the system.
The pressure switch (for high pressure) is calibrated
so as to activate at a pressure exceeding 14 bar; this
happens when there is an excessive amount of coolant,
a blockage in the cooling circuit or when the condenser
is not correctly ventilated.
Have a technician check that there is not an excessive
amount of coolant (R134a) in the system, that there are
no blockages, grime on the condenser or condenser
fans malfunction (check the fuses).
3
Light o but cooling
unit is inoperative
The cooling unit is not working but the led light is
not signalling it.
This may be due to electrical problems.
Check if the led light is correctly working. Check fuses,
relays, electrical wiring and connections.
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