Troubleshooting - LG LFXS29766 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
All errors except for "E rt", "E SS", "E IS(except for icing Sensor)", "E gF", "E It", E hS", "E Id",
"E IU" error, are displayed.
"E IS" which is displayed without input of user is the error of Icing Sensor.
Error Detection
NO
Category
1 Normality
Freezer Sensor
2
Error
Refrigerator
3
Sensor Error
Defrost Sensor
4
Error
humidity Sensor
5
Error
Freezing Icing
6
Sensor Error
Refrigerator Icing
7
Sensor Error
Pantry sensor
8
error
Room Temp
9
Sensor Error
Freezer Ice maker
10
kit defect
Refrigerator Ice
11
maker kit defect
Flow
Meter(Sensor)
12
Defect
13 Defrosting Error
Abnormality of
14
BLDC FAN Moter
for Ice Making
Abnormality of
BLDC FAN Moter
15
for Freezer
Abnormality of
BLDC FAN Moter
16
for Mechanic
Room
Communication
17
Error
Error Display
Refrigerator Freezer
Temperature Temperature
(Error code ) (Error code )
E FS
E rS
E dS
E hS
E Id
E IS
E SS
E rt
E IU
E It
E gF
F dh
E IF
E FF
E CF
CO
E
Error Generation Factors
None
Short or Disconnection
of Freezer Sensor
Short or Disconnection
of Refrigerator Sensor
Short or Disconnection
of Pantry Sensor
Short or Disconnection
of humidity
Short or Disconnectoin of the
sensor about freezer Ice maker
Short or Disconnectoin of the
sensor about refrigerator Ice maker
Short or Disconnection
of Pantry Sensor
Short or Disconnectoin of
Room temp.sensor
Other Electric system error
such as moter, gear,
operation circuit within
freezer I/M kit
Other Electric system error such
as moor, gear, opeation circuit
within refrigerator I/M kit
Error of flow meter or water
input or low water pressure
Even though it is passed
80Minute since then
Defrosting, if Defrosting
sensor is not over
46.4°F(8°C), it is caused
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
- 26 -
Remark
Normal operation of Display
Check each sensor at it's
connector.
When the ice does not drop
even when the freezer I/M
Test S/W is pressed
When the ice does not drop
even when the refrigerator
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.