Troubleshooting - LG LFX28968D 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 "E rt", "E HS",
"E IS(except for Icing sensor)", "E gF", "E It" error, are displayed.
"E IS" which is displayed without input of user is the error of Icing Sensor.
Error Display
Error Detection Freezer
NO
Category Temperature
(Error code ①)
1
N r o m l a
Freezer Sensor
2 E
Error
Refrigerator
3 E
Sensor Error
Defrosting
4 F
Sensor Error
Icing Sensor
5 E
Error
Humidity Sensor
6 E
Error
Room Temp
7 E
Sensor Error
Ice maker kit
8 E
defect
Flow
9 E
Meter(Sensor)
Defect
10 Poor Defrosting F
Abnormality of
11 BLDC FAN Motor E
for Ice Making
Abnormality of
12 E
BLDC FAN Motor
for Freezer
Abnormality of
BLDC FAN Motor
13
E
for Mechanic
Room
Communication
14 E
Error
Refrigerator
Error Generation Factors
Temperature
(Error code ②)
N o n e
Short or Disconnection
FS
of Freezer Sensor
Short or Disconnection
rS
of Refrigerator Sensor
Short or Disconnection
dS
of Defrosting Sensor
Short or disconnection of
the sensor about Ice maker
IS
(Icing sensor, Ice maker
sensor)
Short or Disconnection
HS
of Humidity
Short or Disconnectoin of
rt
Room temp.sensor
Other Electric system error
It
such as moter, gear, Hall IC,
operation circuit within I/M kit
Error of flow meter or water
gF
input or low water pressure
During 2 consecutive cycles
dH the defrosting sensor did
reach over 46F (8C)
It is caused when feedback
signal isn't over 65 seconds
IF
during BLDC FAN motor
operating
It is caused when feedback
signal isn't over 65 seconds
FF
during BLDC FAN motor
operating
It is caused when feedback
signal isn't over 65 seconds
CF
during BLDC FAN motor
operating
Communication Error
between Micom of Main PCB
CO
and Display Micom
- 21 -
Remark
N r o m l a o p r e t a o i n f o D s i p a l y
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.
r