LG MULTI V Service Manual page 135

Error No. Error Type
Outdoor unit liquid
65 pipe (condenser) tem-
perature sensor error
n Error diagnosis and countermeasure flow chart
Is temperature sensor
connector connections
are normal?
Yes
Is the value of temperature
sensor resistance normal?*
Yes
Replace outdoor unit PCB
* Sensor resistance 100 kΩ over (open) or 100 Ω below (short) will generate error
Note: Temperate sensor resistance vary with temperature, So compare temperature sensor resistance value
according to outdoor unit temperature by referring below table (±5 % tolerance)
Air temperature sensor: 10 °C = 20.7 kΩ : 25 °C = 10 kΩ : 50 °C= 3.4 kΩ
Pipe temperature sensor: 10 °C = 10 kΩ : 25 °C = 5 kΩ : 50 °C= 1.8 kΩ
Error Point
Abnormal sensor resis-
tance value
(Open/Short)
No
Check and correct connection
No
Replace sensor
- 135 -
Self-diagnosis function
Main Reasons
1. Defective temperature sensor connection
2. Defective temperature sensor (Open / Short)
3. Defective outdoor unit PCB
Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.