LG MULTI V Service Manual page 128

Self-diagnosis function
Error
Error Type
No.
Over-Capacity
(Sum of indoor unit capaci-
51
ty is more than outdoor
capacity)
n Error diagnosis and countermeasure flow chart
Is capacity sum of
indoor units less than
130 % of outdoor unit
capacity at LGMV?
Yes
End
Error Point
Sum of indoor unit capaci-
ty exceed outdoor unit
capacity specification
Are quantity and capacity
No
of indoor units installed
same as the data of LGMV?
Yes
Adjust the capacity of indoor
and outdoor unit
1. 130 % more than outdoor unit rated capacity
2. Wrong connection of transmission cable/pip-
ing
3. Detect ot outdoor unit PCB
Check communication cables
No
between indoor and outdoor
units
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