LG ARUN Series Service Manual page 129

Error No. Error Type
113*
Master
Outdoor unit liquid pipe
11 ¡ 131
(condenser) temperature
sensor error
Slave
12 ¡ 132
Error No. Error Type
114*
Master
Outdoor unit sub-cooling
11 ¡ 141
inlet / outlet temperature
sensor error
Slave
12 ¡ 142
I 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 kΩover (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(50°F) = 20.7 kΩ, 25°C(76°F) = 10 kΩ, 50°C(122°F) = 3.4 kΩ
Pipe temperature sensor: 10°C(50°F) = 10 kΩ, 25°C(76°F) = 5 kΩ, 50°C(122°F) = 1.8 kΩ
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error Point
Abnormal sensor resistance value
(Open/Short)
Error Point
Abnormal sensor resistance value
(Open/Short)
No
Check and correct connection
No
Replace sensor
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Troubleshooting Guide
Main Reasons
1. Defective temperature sensor con-
nection
2. Defective temperature sensor
(Open / Short)
3. Defective outdoor unit PCB
Main Reasons
1. Defective temperature sensor con-
necter connection
2. Defective temperature sensor
(Open/Short)
3. Defective outdoor PCB
LGE Internal Use Only