LG LTCS20220W Service Manual page 25

8-1-4 Defect Diagnosis Function
1. If there is a problem, an error code will appear..
2. The buttons will not operate.
3. When the problem is repaired, the display will return to normal.
4. The error code is displayed using the LEDs.
• ERROR CODE on Refrigerator Temperature panel
NO Item
Failure of
1
Refrigerator . Sensor
Failure of Defrost
2
Sensor
Failure of Room
3
Temperature Sensor
Failure of
4
Defrost mode
Failure of Fan Motor
5
at freezer
Compartment
ON
Error Code
R1 R2 R3 R4 R5
- 27 -
- 25 -
OFF
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)
Freezer Defrost
Motor Heater
15min ON/
15 min Normal
OFF
No
Normal
defrost
Normal Normal
Normal Normal
OFF Normal