Troubleshooting - LG LFXS26973 Series Service Manual

6. TROUBLESHOOTING

6-1 Error Code Summary
WARNING: When checking Resistance values, make sure to
turn off the power, and wait for the voltage to
discharge.
NOTE) Within 3 hours after the error : Press the Ice Plus button and
Freezer button simultaneously
3 hours after the error : All errors, except for "rt E", "HS E",
"IS E" (except for Icing room sensor),"SS E","Od E",
"IU E","Id E", "gF E", "It E" error, are displayed.
"IS E" which is displayed without input of user is the error of Icing Sensor.
Error Detection
NO
Category
1 Normal
Freezer Sensor
2
Error
Refrigerator
3
Sensor Error
Defrosting
4
Sensor Error
Icing Sensor
5
Error
Humidity Sensor
6
Error
Room Temp
7
Sensor Error
Ice maker kit
8
defect
Flow
9
Meter(Sensor)
Defect
10 Poor Defrosting
Abnormality of
11 BLDC FAN Motor
for Ice Making
Abnormality of
12
BLDC FAN Motor
for Freezer
Abnormality of
BLDC FAN Motor
13
for Mechanic
Room
Communication
14
Error
Abnormal Pantry
15
15 Sensor
Abnormal Wi-Fi
16
Modem
Abnormal F Room
17 Icemaker Tray Sensor
Abnormal F Room
18
IceMaker Kit
Error Display
Freezer Refrigerator
Temperature
Temperature
(Error code ①)
(Error code ②)
FS
E
E
rS
dS
F
E
IS
HS
E
E
rt
E
It
E
gF
dH
F
IF
E
E
FF
E
CF
E
CO
SS
E
E
Od
E
Id
IU
E
Error Generation Factors
None
Short or Disconnection
of Freezer Sensor
Short or Disconnection
of Refrigerator Sensor
Short or Disconnection
of Defrosting Sensor
Short or disconnection of
the sensor about Ice maker
(Icing sensor, Ice maker
sensor)
Short or Disconnection
of Humidity
Short or Disconnectoin of
Room temp.sensor
Other Electric system error
such as moter, gear, Hall IC,
operation circuit within I/M kit
Error of flow meter or water
input or low water pressure
During 2 consecutive cycles
the defrosting sensor did
reach over 46F (8C)
It is caused when feedback
signal isn't over 65 seconds
during BLDC FAN motor
operating
It is caused when feedback
signal isn't over 65 seconds
during BLDC FAN motor
operating
It is caused when feedback
signal isn't over 65 seconds
during BLDC FAN motor
operating
Communication Error
between Micom of Main PCB
and Display Micom
Humidity Sensor Short Or
Open Circuit
Communication Error Between
Display And Wi-Fi Modem
Icemaker Tray Sensor Short Or
Open Circuit
Other Electrics System Error Such
As Motor, Gear,Hall IC, Operation
circuit Within I/M Kit
- 21 -
Remark
Ration of display
Check each sensor at it's
connector.
When the ice does not drop
even when the I/M Test S/W
is pressed
Error of flow meter or water
input or low water pressure or
flow meter connection
Temperature Fuse
Disconnection, Heater
disconnection, DRAIN Jam,
Poor Relay for Heater
Poor BLDC Motor connection,
DRIVE IC, and TR
Poor BLDC Motor connection,
DRIVE IC, and TR
Poor BLDC Motor connection,
DRIVE IC, and TR
Poor Communication
connection,Poor TR of
Transmitter and Receiver
Tx/Rx between display and
main board.
Check sensor at it's connector
Poor Communication Connection
(Short Or Open Circuit)Poor TR
of Transmitter and Receiver Tx/Rx
Check sensor at it's connector
When the Ice Does not Drop even
when the I/M Test S/W is pressed