LG R410A Service Manual page 167

Error
Error Contents
Code
Outdoor heat
48
exchanger (A,B)
(Heat
exchanger
Pipe temp sensor
B)
error
Error
Error Contents
Code
Outdoor voltage
49
sensing error
I 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.
Meaning
The measured value of the
sensor is not normal
(Open/Short)
Meaning
The measured value of the
sensor is not normal
(Open/Short)
Main Causes
Refer to CH45
Main Causes
1. Abnormal input voltage
2. Outdoor line fuse damage
3. Defective outdoor main PCB
Troubleshooting Guide
Error display
position
Error display
position
Concerned
Remote
Controller
Service Manual 167