LG R410A - Page 167

Service Manual 167
Troubleshooting Guide
Outdoor heat
exchanger (A,B)
Pipe temp sensor
error
Error
Code
Error Contents Meaning Main Causes
Error display
position
48
(Heat
exchanger
B)
The measured value of the
sensor is not normal
(Open/Short)
Refer to CH45
Outdoor voltage
sensing error
Error
Code
Error Contents Meaning Main Causes
Error display
position
49
The measured value of the
sensor is not normal
(Open/Short)
Concerned
Remote
Controller
1. Abnormal input voltage
2. Outdoor line fuse damage
3. Defective outdoor main PCB
■ Defect inspection method
1) Check whether the input power (3 phase =380-10%, 415+10% single phase = 220-10%, 240+10%) is normal.
In case of any deviation in supplied power or the rated power please request the the electric in charge of the
building to supply the suitable power.
2) Is the power input to the the outdoor PCB 220-10%, 240+10%.
Otherwise, a outdoor line fuse or the required input power to be formed.
3) In case the the power input to the outdoor PCB is normal then please replace the PCB because PCB may be
causing the voltage sensing error in the outdoor unit.