23
ISETTA
USE AND MAINTENANCE MANUAL
428000372
237
EN
In the event of uncertain or no operation,
before requesting the intervention of the service
Technical After-sales
carry out the following controls:
FAULT
CAUSE
SOLUTION
The appli-
ance is not
working
Blown protective fuse
Previously fi nd the cause of the intervention
of the switch, and then re-introduce the new fuse.
The master switch is open
Close the master switch.
The plug is not inserted
Insert the plug.
Electric black-out
If the black-out should be prolonged,
transfer the product into an appropriate cold storage container.
The internal
temperature
is not low
enough
Evaporator/s obstructed completely
by ice
Carry out an additional defrosting cycle.
The wrong temperature has been
set on the electronic control board
Set the appropriate temperature.
The appliance is affected by
draughts or is exposed to direct or
refl ected sunlight
Remove any excessive draughts and prevent any direct or re-
fl ected sunlight.
Insuffi cient cooling air fl ow in the
air condensing unit
Remove anything that may affect air fl ow inside the condensing
unit (paper sheets, cardboard, grids with an insuffi cient number
of holes, etc.).
Internal fans at standstill
or with fans damage
Contact the
Technical Assistance
service
Internal ventilation is too high
Contact the
Technical Assistance
service
Low electronic control board ef-
fi ciency
Contact the
Technical Assistance
service
Replace the electronic control board. The electronic control board, if
designed for
R290
refrigerant must be replaced only with an origi-
nal provided by
ISA
.
Replace the temperature probes only after checking which of the
two is not operating effi ciently.
Air condensing unit blocked by dust
or debris
Contact the
Technical Assistance service.
Clean the condensing unit thoroughly.
Insuffi cient coolant
in the cooling system
Contact the
Technical Assistance
service
Find the cause behind the lower amounts of coolant and eliminate
it. Top up the coolant. If necessary, empty the system before
topping up.
The com-
pressor does
not start-up
or operates
for a few
moments
No power supply
Check if there is a power cut.
Close the various switches on the power supply line.
The power supply voltage is too
low
Check that the network voltage of the power supply cable is 220V
+/- 10%.
The temperature set on the
thermostat is too high
If the set temperature is higher compared to the air in the display
area, the compressor does not activate itself.
Set a more suitable temperature if the current value is not low
enough
The pressure switch operated at
maximum pressure
(where present)
Contact the
Technical Assistance service.
Check the reasons why the pressure switch is operating at
maximum pressure levels, such as: air condensing unit blocked,
condensing unit fan stopped, ambient temperature too high,
pressure switch broken.
10. TECHNICAL ASSISTANCE
10.1 Faults
Содержание Isetta 12R LX
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