LG Multi V Manual&Nbsp;

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.1.2 Pressure control on heating mode
■ High pressure control
■ Low pressure control
❈ Frequency holding : frequency (or RPM) is not increasing ( can decrease )
Pressure range, kPa(psi) Compressor Fan Hot gas
Hot gas
Stop Stop
ON
-5Hz/4sec. -50RPM/4sec.
Normal control Frequency holding
Ph < Target Pressure
Normal control OFF
Pressure range, kPa(psi) Compressor Fan
Frequency holding Normal control
ON
-5Hz/4sec. +100RPM/4sec.
Stop Stop
Normal control
OFF
Normal control
Normal control
P
h ≥ 4003 (580.6)
P
h > 3807 (552.2)
P
h ≥ 3644 (528.5)
P
h ≥ 3448 (500.1)
P
l ≤ 190 (27.6) after 1min.
P l ≤ 190 (27.6) before 1min.
Pl ≤ 229 (33.2)
Pl ≤ 268 (38.9)
Pl > 307 (44.5)
Function
Ph : high pressure
P
l : low pressure

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)