LG GB7143**AV Series Service Manual page 42

BETTER
(1)
(5)
(9)
NO Item
1 Normality
Failure of Freezer
2
Sensor
Failure of Refrigerator
3
Sensor
Failure of Freezer
4
Defrost Sensor
Failure of Refrigerator
5
Defrost Sensor
Poor of
6
Freezer Defrost
Poor of
7
Refrigerator Defrost
Failure of Fan Motor
8
at Freezing
Compartment.
Failure of Fan Motor at
9
Refrigerator
Compartment.
Failure of Fan Motor at
10
Mechanical Room
Failure of
11
Communication
(2)
(6)
(10)
Error Code
Refriger-
Freezer
ator
temperature.
(1)
(2)
(3)
(4)
80minute later After starting defrost.
(5)
50minute later After starting defrost.
(6)
If sensor doesn't be over 10°C.
(7)
FF If there is no fan motor signal
for more 65 sec in operation fan
(8)
(9)
(10) communication between main PCB
- 42 -
(3)
(7)
(11)
Contents
-
Cut or short circuit wire
Cut or short circuit wire
Cut or short circuit wire
Cut or short circuit wire
If sensor doesn't be over 5°C.
motor.
If there is no signal for
and display PCB.
(4)
(8)
Remarks
Display Switch is normal
Inspection connecting
wires on each sensor.
Snapping of defrost heater
and Temperature fuse,
Poor of Heater relay
operation, Drain is
blocked.
Poor motor, hooking to
wire of fan and drive
IC, TR
Short of lead wire
connecting between main
PCB and Display,
transmission TR and
receiving part.