LG ARNU Series - Page 284

Troubleshooting Guide
- 284 -
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Refer to CH33
Error No. Error Type Error Point Main Reasons
Constant speed compressor Off due to
the excessive rise in discharge temp
Excessive rise of the constant
compressor discharge tem-
perature
152,153
(Sub3)
Refer to CH54
Error No. Error Type Error Point Main Reasons
Wrong wiring at the outdoor 3
phase(Reverse phase / Phase omis-
sion)
Outdoor 3 phase power sup-
ply wiring wrong (Reverse
phase / Phase omission)
155(Sub3)
Refer to CH104
Error No. Error Type Error Point Main Reasons
Transmission error between outdoor units
104 (Main outdoor unit is not receiving
sub outdoor unit s signals)
147, 149, 171 (Sub outdoor units are not
receiving main unit signals)
Transmission error between
outdoor units
156(Sub3)
Refer to CH43
Error No. Error Type Error Point Main Reasons
Abnormal resistance value of sensor
measurement ( Open / Short )
High pressure sensor error157(Sub3)
Refer to CH42
Error No. Error Type Error Point Main Reasons
Abnormal resistance value of sensor
measurement( Open / Short )
Low pressure sensor error158(Sub3)
Refer to CH44
Error No. Error Type Error Point Main Reasons
Abnormal resistance value of sensor
measurement( Open / Short )
Outdoor unit air temperature
sensor error
159(Sub3)
Refer to CH46
Error No. Error Type Error Point Main Reasons
Abnormal resistance value of sensor
measurement ( Open / Short )
Compressor suction tempera-
ture error
161(Sub3)