LG LTCS20020 Series Service Manual page 29

8-1-9 ERROR DIAGNOSTIC MODE
1. The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while
operating the product.
2. Even if the function control button is pushed when an error occurs, the function will not be performed.
3. When the error is cleared while the error is detected, the appliance returns to the normal condition (Reset).
4. The error code is displayed by the refrigerator temp indication LED on the display of the refrigerator while the remaining
LEDs are off.
Note) All of the errors except room temperature sensor error are displayed only after 3 hours after sensing the error.
To check if an error has occurred before 3 hours have passed, press and hold down TEMP AJUST button.
NO Item
Failure of
1
Refrigerator . Sensor
Failure of Defrost
2 Sensor
Failure of Room
3
Temperature Sensor
Failure of Defrost
4
mode
Failure of Fan Motor
5 at freezer
Compartment
Failure of Fan
Motor at
6
mechanic room
Error Code
R1 R2 R3 R4 R5
29
Product Operation Status in Failure
Contents
Compressor
15min ON/
Ref. Sensor Open or
15 min OFF
Short circuit wire
Defrost Sensor Open Normal
or Short circuit wire
RT Sensor Open or
Normal
Short circuit wire
When defrosting
sensor do not reach
reach 50°F (10 ) Normal
within 1Hr after
starting Defrost
If there is not motor
Normal
Signal (motor could be
locked)
If there is not motor
Normal
signal (motor could
be locked)
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ON OFF
Freezer Defrost
Motor Heater
15min ON/
15 min Normal
OFF
No
Normal
defrost
Normal Normal
Normal Normal
OFF Normal
Normal Normal