LG SxS LRSPC2661T Service Manual page 29

MICOM FUNCTION
2-18. Failure Diagnosis Function
1. Failure diagnosis function is a function to facilitate servicing when improper operation of the product occurs.
2. The user will notice a failure when pressing one of the function buttons yields no consequent effect beyond the audible
Ding.
3. If the improper operation ceases while a failure is displayed, the MICOM resets the display to a normal state.
4. A failure code is indicated on the LCD displays refrigerator and freezer temperature readouts temperature for the freezing
room and the display part of setting temperature for the cold storage room of LCD, which are placed at the display part of
a refrigerator. All the LCD graphics other than a failure code are turned off.
Failure code display part
No. Item
Setting
temperature
for freezing
1 Failure of freezer
sensor
2 Failure of refrigerator
sensor 1
3 Failure of refrigerator Setting temperature
sensor 2
4 Failure of frost
removal sensor
5 Poor of frost
removal
6 Failure of BLDC FAN
at freezing section
7 Failure of BLDC FAN
at machine section
8 Failure of
Communication
9 Abnormal
electronic single
motor Damper
10 Failure of Setting temperature
Outside Sensor
11 Failure of ice Setting temperature
removal sensor
12 Failure of Setting temperature
Icemaker unit
In display of the failure mode, all LCDs of setting temperature for freezing/ setting temperature and for cold storage are
turned off (excluding Note1 and Note2).
WATER
CUBED
CRUSHED
OFF
Setting
Symptoms of failure
temperature for
cold storage
Er FS Snapping or short-circuit of
freezer sensor
Er rS Snapping or short-circuit of
refrigerator sensor 1
Snapping or short-circuit of
display (Note 2) refrigerator sensor 2
Er dS Snapping or short-circuit of frost
removal sensor
Er dH Snapping of frost removal heater
or temperature fuse, pull-out of
connector (indicated minimum 4
hours after failure occurs)
Er FF Poor motor, connection of wires
to fan. Contact of structures to
Fan. Snapping or short-circuit of
Er CF L/wire (if there is no fan motor
signal for more than 60 seconds
in operation of fan motor
Er CO 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.
Er dP Faulty damper motor. Lead wire of
damper lead switch in out or short-
circuited. Interference of foreign
materials in damper baffle or EPS.
Snapping or short-circuit of outside
display (Note 1) temperature perceiving sensor
Snapping or short-circuit of ice-
display (Note 2) making sensor
Poor motor or Hall IC within ice-maker
display (Note 2) unit. Snapping or short-circuit of
L/Wire. Poor main PCB drive circuit.
TEMP TEMP
FILTER STATUS
H
M
L
Compressor
ON for 15mi n utes
OFF for 15mi n utes
- 29 -
ROOM TEMP
6
5
4
3
2
UNLOCK
1
: Normal Operation
Product operation status in failure
Freezer M/C room
Fan Fan
Standard
RPM
Standard
RPM
Standard
RPM
No frost
Standard
removal
RPM
Standard
RPM
OFF (check every
30 mi n utes)
OFF (check
Standard
every 30 mi n utes)
RPM
Standard
RPM
Defrost Stepping
Heater motor damper
Open f o r 10munut e s,
cl o si n g f o r 15 mi n ut e s
Check
operation
every hour