LG LMX25984ST/01, Service Manual

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6. TROUBLESHOOTING (Error Code)
NO
Error Detection
Category
1
Normality None Normal operation of Display
2
Freezer Sensor
Error
Er FS
Short or Disconnection of
Freezer Sensor
3
Refrigerator
Sensor Error
Er rS
Short or Disconnection of
Refrigerator Sensor
Each Sensor have to check
disconnection
Error Generation Factors Remark
Error Display
Freezer
Temperature
Ref.
Temperature
4
Defrosting Sensor
Error
Er dS
Short or Disconnection of
Defrosting Sensor
5 Icing Sensor Error Er IS
Short or Disconnection of
Icing Sensor
6 Poor Defrosting Er dH
Even though it is passed
1hour since then Defrosting,
if Defrosting sensor is not
over 46°F(8°C), it is caused Temperature Fuse
Disconnection, Heater
disconnection, DRAIN Jam,
Poor Relay for Heater
7
Abnormality of
Brushless DC
FAN Motor for Ice
Making
Er IF
It is caused when F/B signal
isn’t over 65 seconds during
Brushless DC FAN motor
operating Poor BLDC Motor connection,
DRIVE IC, and TR
8
Abnormality of
Brushless DC
FAN Motor for
Freezer
Er FF
It is caused when F/B signal
isn’t over 65seconds during
Brushless DC FAN motor
operating Poor BLDC Motor connection,
DRIVE IC, and TR
9
Abnormality of
Brushless DC
FAN Motor for
Mechanic Room
Er CF
It is caused when F/B signal
isn’t over 65seconds during
Brushless DC FAN motor
operating Poor BLDC Motor connection,
DRIVE IC, and TR
10
Communication
Error
Er CO
Communication Error
between Micom of Main PCB
and Display Micom Poor Communication
connection, Poor TR of
Transmitter and Receiver
ERROR CODE on display panel
NOTE) In the case of Room Temperature Seneor Error, “Er rt” appears on the Display when ICE PLUS KEY and Freezer
Temp’ KEY pressed at the same time for one second.
NOTE) 3 hours befor the error : Press the ICE PLUS button and Freezer button simultaneously
3 hours after the error : All errors, except for “Er rt” error, are displayed.