LG Multi V Service Manual

- 52 -
Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Functions
1.1 Normal Operation
1.2 Starting Control(Heating Mode Only)
If the system is operated in the heating mode, all high pressure gas valves are opened
1.3 Valve Control
Mode change timer is calculated as Table 1, and valves are controlled by Mode change timer according to
Table 2.
Table 1. Mode change timer calculation
1. Basic Control
Functions
Actuator Power on Cooling operation Heating operation Stop state
High pressure gas valve Close Close Open Keep
Low pressure gas valve
After 30 seconds
Open
Open Close Keep
Liquid valve Close Open Close Close
Operating mode
Mode change
timer
H/P gas valve L/P gas valve Balancing valve
Cooling
120 ≤ timer Keep Keep Close
0 < timer < 120 Close Close Open
timer = 0 Close Open Close
Heating
180 ≤ timer Keep Keep Close
0 < timer < 180 Close Close Close
timer = 0 Open Close Close
Stop or ventilation
0 < timer < 5
Cooling mode :
Close
Keep Close
Timer = 0
Heating mode : Low
pressure gas valve
➔ Close
Keep Close
Previous mode Changing mode Mode change timer
Stop or ventilation Cooling or heating 120 seconds
Cooling mode Heating 180 seconds
Heating mode Cooling 120 seconds
Cooling or heating Stop or ventilation
During heating : 60 seconds
During cooling : 0 seconds
Table 2. Valve control by mode change timer

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)