LG Multi V Service Manual

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Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
HR Unit PCB
3) Setting the Valve group.
No.1, 2 valve
/
No.3, 4 valve
control
No.3, 4 valve
control
Dip switch setting
No.2, 3 valve
control
No.1, 2 valve
control
Not control
Example
Indoor unit
Indoor unit
Large capacity indoor unit
Indoor unit
Indoor unit
Large capacity indoor unit
Indoor unit
Indoor unit
Large capacity indoor unit
Large capacity indoor unit
Large capacity indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
Models
ARBLB03321
413(16-1/4)
390(15-11/32)
I.D19.05(3/4)
I.D19.05(3/4)
I.D19.05(3/4)
I.D12.7(1/2)
I.D12.7(1/2)
I.D12.7(1/2)
I.D12.7(1/2)
I.D12.7
(1/2)
74
(2-29/32)
70(2-3/4)
I.D15.88(5/8)
I.D15.88(5/8)
I.D25.4(1)
I.D25.4(1)
O.D25.4(1)
80(3-5/32)
110(4-11/32)
332(13-1/16)
321(12-5/8)
83
(3-9/32)
1
2
3
3
O.D19.05(3/4)
O.D19.05(3/4)
1 2
I.D22.2(7/8)
I.D22.2(7/8)
I.D22.2(7/8)
I.D6.35(1/4)
I.D6.35(1/4)
I.D28.58(1-1/8)
I.D9.52(3/8)
I.D9.52(3/8)
I.D9.52(3/8)
Low Pressure Gas Pipe Liquid pipe
] Y branch pipe
* For more information, refer accessory installation manual.
[Unit:mm(inch)]
Note:
If the large capacity indoor units are installed, below Y branch pipe should be used

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)