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24
Service Manual
Ne
w
E
lectronic Cold Platform 2005
Edition
2005.03.25
Language
E
nglish
A defrost during the SUPER FREEZE function is possible, specifically, after a number of hours from the end
of the function as parameterised in the EEPROM memory, the compressor is switched off and a defrost
cycle is executed, ending with the conditions already discussed for normal operation. At the end of this
defrost cycle, the compressor is switched on again to complete the hours remaining for the SUPER FREEZE
function.
2. Prolonged refrigerator door open time: in the case of a refrigerator door open time greater than a value
parameterised in the EEPROM memory, the system activates forced defrost cycles managed as per nor-
mal operation, every number of hours parameterised in the EEPROM memory.
3. Optimisation of power consumption: connection of the defrost and drip tray heating elements is managed
differently in the case of the conditions already described in the heading “Compartments adjustment” under
the subheading “Special Conditions”; in this condition defrost requests are activated only in accordance
with the time that has elapsed since the last defrost cycle on the basis of a parameter stored in the EEPROM
memory. Defrosting is managed in the same manner as described above.
I
n order to check whether or not the defrost and drip tray heating elements are switched on, check whether
the drip tray is hot or whether any water due to the melting of ice on the evaporator coil is coming out of the
drain tube.
FR
EE
Z
E
R FAN
The purpose of the freezer fan is to distribute the
cold air, produced by the evaporator coil, inside the
freezer compartment. The freezer fan, located in front
of the evaporator coil, is switched on by the PCB.
The freezer fan is switched on after a time interval
parameterised in the EEPROM memory from the
time when the compressor was connected due to a
freezer cooling demand. On the contrary, in the case
of a refrigerator cooling demand the fan is started at
the same time as the compressor. When the com-
pressor is switched off also the fan is switched off.
Pre-defrost: connection of the defrost and drip tray heating elements during a defrost cycle is preceded by
activation of the freezer fan for a time interval parameterised in the EEPROM memory.
Post defrost: the delay in starting of the freezer fan in the event that the compressor is started for the first
time after a defrost cycle is a parameter stored in the EEPROM memory and is different from the delay time
utilised during normal operation.
I
n order to check whether the freezer fan is running check for the presence
of an air flow issued from the vents on the bottom of the freezer compartment.
DAMP
E
R
The purpose of the damper is to allow the cold air
produced by the evaporator coil to be distributed in-
side the refrigerator compartment. By means of the
damper, which is positioned in the upper zone on
the base of the refrigerator compartment, and by
means of an air duct that connects the evaporator
coil to the damper, cold air from the evaporator coil
is distributed in the refrigerator compartment by
means of openings on the multiflow unit.
Summary of Contents for New electronic cold platform 2005
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