A
SS
I
ST
ANCE
G
B
52
Service Manual
Ne
w
E
lectronic Cold Platform 2005
Edition
2005.03.25
Language
E
nglish
FAULT
CORR
E
CTIV
E
ACTIONS
CAUS
E
-
Check efficiency of contacts on PCB connector J8;
-
Check for impedance on wiring connector J8 pins 2 and 1 and ensure that
the value is compatible with the value given in the relevant table;
-
Check correct switching of the solenoid valve. Check, with the compressor
running, that the solenoid valve switches when the refrigerator compart-
ment is set to OFF by means of the temperature control knob
-
Renew solenoid valve;
-
Renew PCB.
-
I
n the case of an original production PCB, renew PCB and EEPROM;
-
I
n the case of replacement PCB and EEPROM, check correct insertion of
EEPROM in PCB socket.
For L
E
D interface PCB:
-
Check efficiency of contacts on PCB connector J13;
-
Check continuity of connector J13 / 5-way and 7-way connectors of LED
PCB;
-
Renew main PCB;
-
Renew display PCB;
For Digit interface PCB:
-
Check efficiency of contacts on PCB connector J13;
-
Check continuity of connector J13 / 4-way interface PCB connector;
-
Renew main PCB;
-
Renew display PCB.
-
Renew PCB.
-
Renew PCB.
-
Check efficiency of contacts of PCB connector J11;
-
Check NTC sensor, ensuring that the impedance value read on pins 3 and
4 of wiring connector J11 is compatible with the values in the temperature-
impedance correlation table (also heat the sensor by holding it with your
hand where possible and checking the change in the impedance value);
-
Renew PCB.
-
Check efficiency of contacts of PCB connector J11;
-
Check NTC sensor, ensuring that the impedance value read on pins 1 and
2 of wiring connector J11 is compatible with the values in the temperature-
impedance correlation table (also heat the sensor by holding it with your
hand where possible and checking the change in the impedance value)
-
Renew PCB.
-
Renew appliance
-
Check efficiency of contacts of PCB connector J11;
-
Check NTC sensor, ensuring that the impedance value read on pins 5 and
6 of wiring connector J11 is compatible with the values in the temperature-
impedance correlation table (also heat the sensor by holding it with your
hand where possible and checking the change in the impedance value);
-
Renew PCB.
-
Check efficiency of contacts of PCB connector J11;
-
Check NTC sensor, ensuring that the impedance value read on pins 1 and
2 of wiring connector J11 is compatible with the values in the temperature-
impedance correlation table (also heat the sensor by holding it with your
hand where possible and checking the change in the impedance value)
-
Renew PCB.
F08
I
ncorrect switching of sole-
noid valve
File setup error (EEPROM
not programmed or faulty).
No communication be-
tween display PCB and
control PCB
F12
F09
F23
FREEZER Air NTC sensor
open / short circuit
F24
F22
F14
FR
I
DGE Evaporator NTC sensor open / short circuit
FR
I
DGE Air NTC sensor
open / short circuit
Ambient NTC sensor U
I
F21
Faulty power PCB
F25
FREEZER Evaporator NTC
sensor open / short circuit
Summary of Contents for New electronic cold platform 2005
Page 73: ......
