Failure Diagnosis Function - LG LSC26905TT Service Manual

MICOM FUNCTION

2-16. Failure Diagnosis Function

1. Failure diagnosis function is to facilitate service when a failure occurs and produces an error code.
2. In occurrence of failure, pressing the function adjustment button does not perform function.
3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).
4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting
temperature for the cold storage room of display, which are placed at the display part of a refrigerator. All the display
graphics other than a failure code are turned off.
(1) GR-L267BV(T)R Model (Refer to appendix)
F4
Trouble Code
F3
Index
F2
F1
Trouble Code Index
No. Item
F1
1 Abnormal
freezer sensor
2 Abnormal refrigerator
sensor 1 (R1)
(Upper part in the
refrigerator
compartment)
3 Abnormal refrigerator
Normal display
sensor 2 (R2)
(Upper part in the
refrigerator
compartment)
4 Abnormal defrost
sensor
5 Failed defrosting
6 Abnormal freezing
BLDC motor
7 Abnormal cooling
BLDC motor
Normal display
8 Abnormal
ambient sensor
Normal display
9 Abnormal
icemaker sensor
10 Abnormal Normal display
icemaker unit
Normal display
11 Abnormal W/T
sensor
EXPRESS
CUBE
FRZ
WATER
FRZ
ON
CRUSH
TEMP
C E
Contents of failure
F2 F3 F4
Freezer sensor short circuit
Refrigerator sensor1 short circuit
Refrigerator sensor2 short circuit
(Note 1)
Abnormal short circuit
Defrost heater, temperature fuse short
circuit, unplugged connector(indicated
4 hour later after trouble)
Motor defect, hooked of lead wire
to fan, contact of structures with
fan, short or open of lead
wire(there is no signal of BLDC
motor more than 115 seconds in
operation of fan motor)
Ambient sensor short circuit
(Note 1)
Icemaker sensor short circuit
(Note 1)
Faulty icemaker unit morot or hall
ic, lead wire short circuit, faulty
(Note 1)
motor driving circuit
Water Tank sensor short circuit
(Note 1)
Trouble Code
FILTER
DIGITAL CONTROL
COLDEST
FILTER RESET
HOLD 3SECS
COLD
FRZ TEMP REF TEMP
F G
Product operation status in failure
Compressor
BLDC motor
ON for 15mi n utes / Standard
OFF for 15mi n utes
G G
Standard
G G
Standard
G G
Standard
G G
Standard
G G
G G
Standard
G G
G G
G G
G G
- 26 -
DISPENSER
BUTTON
3 SECS
LOCK
D
 : On l : Off ˇ : Normal
Freezing Cooling Defrost
BLDC motor Heater
G G G G
RPM
G G G G
RPM
G G G G
RPM
G G
No defrost
RPM
G G G G
RPM
G G G G
OFF
G G
OFF
RPM
G G G G
G G
G G G G
G G
G G G G
G G
G G G G
G G
Stepping
motor damper
G G
Full opening for
10 minutes/
Full closing for
15 minutes
G G
G G
G G
G G
G G
G G
G G
G G
G G