Troubleshooting Guide
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1. 130% more than outdoor unit rated capacity
2. Wrong connection of transmission
cable/piping
3. Defect of outdoor unit PCB
Error
No.
Error Type Error Point Main Reasons
Sum of indoor unit capaci-
ty exceed outdoor unit
capacity specification
Over-Capacity
(Sum of indoor unit capaci-
ty is more than outdoor
capacity)
51
■ Error diagnosis and countermeasure flow chart
Is capacity sum of
indoor units less than
130% of outdoor unit
capacity at LGMV?
No
Yes
Are quantity and capacity
of indoor units installed
same as the data of LGMV?
Yes
Adjust the capacity of indoor
and outdoor unit
No
Check transmission cables
between indoor and outdoor
unit
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