LG GR-S642, Service Manual

Page: 19 / 46

7-1-10 ERROR DIAGNOSTIC MODE
1. The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while
operating the product.
2. Even if the function control button is pushed when an error occurs, the function will not be performed. However, the
recognition tone (beep~) sounds.
3. When the error is cleared while the error code is displayed due to a fault, the appliance returns to the normal condition
(Reset).
4. The error code is displayed by the refrigerator temp indication LED on the display of the refrigerator while the remaining
LEDs are off.
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Error Code
Display
NO Error
Error Code
Cause
State of Operation with Error
Display
Comp Cooling fan Defrosting heater
1
2
3
4
5
Faulty refrigerator
(R) sensor
Faulty defrosting
sensor
Faulty Room
temperature sensor
(in the main PCB)
Defrosting failure
Failure of
communication
(LCD MODEL
ONLY)
r
d
when checking
LED, the error
code display all off
H
C
Cut or short-circuited wire of
refrigerator sensor
Cut or short-circuited wire of
defrosting sensor
Cut or short-circuited wire of
intake air temperature sensor
Cut or disconnected wire of
defrosting heater or temperature
fuse(indicated at least 4 hours
later after the error occurs)
Connection between main PCB
and display PCB. Snapping or
short-circuit of L/wire
transmission between main
PCB and display PCB. Poor TR
and receiving part.
15 min ON/
15 min OFF
standard
RPM
standard
RPM
standard
RPM
standard
RPM
standard
RPM
No defrosting