O
PERA
T
I
ON
G
B
25
Service Manual
Ne
w
E
lectronic Cold Platform 2005
Edition
2005.03.25
Language
E
nglish
Opening and closing of the damper are managed by the PCB through the activation of a triac on the board.
The damper is opened in the presence of a cooling demand from the refrigerator compartment and when
the compressor is running.
When there is no cooling demand from the refrigerator compartment, the damper is closed, even though
the compressor may continue to run to meet cooling demand from the freezer compartment.
Pre-defrost: connection of the defrost and drip tray heating elements during a defrost cycle is preceded by
opening of the damper and activation of the freezer fan for a time interval parameterised in the EEPROM
memory.
Post defrost: the delay interval before opening the damper if the compressor is started for the first time after
a defrost cycle is a parameter stored in the EEPROM memory.
Refrigerator Door: there exists a condition wherein, despite the fact that the compressor is running, the
damper is not kept open; this is the case in which the refrigerator door is open: in this condition the damper
is closed even in the presence of a cooling demand from the refrigerator compartment and when the
compressor is running. The damper is opened again only when the fridge door is closed.
To check opening of the damper check whether there is an air flow from the vents on the base of the
refrigerator compartment in the presence of an active cooling demand from the refrigerator compartment
and simulating door closed conditions by applying a magnet.
To check closing of the damper check that there is no air flow from the vents on the multiflow unit on the
base of the refrigerator compartment with the fridge door open and the freezer fan running.
FRIDG
E
LAMP OP
E
RATION:
Housed in a light fixture, the fridge lamp serves to
illuminate the refrigerator compartment. The lamp is
controlled by a triac on the PCB and it switches on
when the door is opened and switches off when it is
closed.
I
f the door is kept open for more than a time interval
parameterised on the PCB, the lamp will flash until
the door is closed.
STATISTICS MANAG
E
M
E
NT:
There are several parameters recorded in the memory that serve to identify the behaviour of the user and
the appliance. The parameters are divided on a daily basis and recorded each week in rolling mode. When
the current day is stored in the memory data for the oldest date are deleted.
Summary of Contents for New electronic cold platform 2005
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