8. DEFECTS AND REMEDIES
DEFECT
PROBABLE CAUSES
POSSIBLE REMEDIES
The unit does not work
Automatic switch released due to
absorption overload
Re-start the automatic switch
Main switch off
Turn the main switch on
Refrigeration switch off
Turn the refrigeration switch on
Electrical black-out in the building
If the black-out does not end in a reasonable time frame, it become
necessary to move the displayed product in another refrigerator
The temperature inside the display
area does not get enough cold
The evaporator(s) is blocked by ice
forming
Operate a complete defrost cycle after having displaced the products in
another refrigerator.Do not put the product back in the cabinet until the real
defect has been identified
The internal fans are damaged or not
working
Replace the damaged fans. If the fans are not damaged, an electrical defect
must be identified. If the fans are replaced, the blades’ inclination have to be
maintained unchanged
Excess of internal ventilation
Replace the fans and make sure that blades’ inclination is kept unchanged
The pre-set temperature of the digital
control panel is wrong
Set the correct temperature
The digital control is not working
Replace the slave module or the temperature sensor, after you made clear
which one is faulty
The display area is crossed by draught or
exposed to direct/reflected sunbeams
Eliminate draughts and try to avoid sunbeams interference in any way
Air condenser is clogged by dust or dirt
Clean the condenser with accuracy
The cooling air flow of the condenser is not
sufficient
Remove everything that might obstacle the air flow through the condenser
Refrigerant gas not sufficient inside the
cooling system
Find and remove the leak inside the system. Refill the system with the
refrigerant
The cooling water flow of the water
condenser is not sufficient
Check that water supply is operating. In case it is, just regulate (or replace)
the regulation valve
The product gets too hard next to
air outlet and too soft next to air
intake
Front evaporator blocked by frost
Verify the efficiency of the gasket seal (relatively to the glass superstructure).
Verify that the display area is not crossed by draughts. Verify that backsliders
(or night blind) are always closed, peak hours excepted. Verify that internal
ventilation is sufficient and that the product does not exceed 10mm above
the pans level. Act accordingly
Front evaporator blocked by ice
All the a.m. checks are required
Verify, in addition, the defrost cycle efficiency
Back evaporator blocked by ice
Verify that the refrigerating and electric systems of the unit are working
properly
Internal fans are not efficient
Restore the efficiency of the fans by replacing the damaged ones
The basket seal of the glass
superstructure is not sufficient
Verify the seriousness of the defect and make sure the draughts are
minimized
Some of the products tend to
soften, while some other keep the
right consistence
The temperature inside the display area is
not fit for the products that get too soft
Since the storage temperature cannot be appropriate for any gelato product,
based on different flavours and compositions, it is suggested to display only
similar products together
The compressor does not start or it
does not hold operating
There is no electrical supply
Verify there is no black-out in progress. Turn all the power switches on.
The supply tension is too low
Verify that nominal tension at connecting clamps is 220V; a tension between
198V and 242V will be acceptable. If the tension does not reach 198V, the
compressor might have problems in starting. Verify the efficiency of electric
installation including the connecting clamps to the compressor
The pre-set temperature on the thermostat
is too high
If the preset temperature is higher than in the display area, the compressor is
not going to work. Change the settings if you verify that the preset
temperature is not enough low
The intervention of the max pressure valve
(where present)
Identify the probable cause among the following:
The air condenser is blocked - The cooling fan of the air condenser is not
working - The room temperature is too high - Lack of cooling water in the
water condenser - The pressure valve is broken - Remove the cause
Summary of Contents for CIAO GEL 12
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