LG Multi V Service Manual

- 128 -
Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Self-diagnosis function
1. 130 % more than outdoor unit rated capacity
2. Wrong connection of transmission cable/pip-
ing
3. Detect ot 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
n 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 communication cables
between indoor and outdoor
units
End

LG Multi V Specifications

General

Type	VRF (Variable Refrigerant Flow)
Compressor Type	Scroll
Refrigerant	R410A
Energy Efficiency	High
Control System	Centralized and individual control options
Indoor Units	Multiple types available (e.g., ceiling cassette, wall-mounted, ducted)