LG Multi V CRUN Series Service Manual page 159

Linear Expansion Valve(LEV) Control
(1) Control type
for Outdoor Unit
At starting
Feed back
control
At starting
Feed back Freed back
control
Deicing
In case that main power is first turned on or in heating operation, there is no indoor unit turn on signal for 4
minutes after all of indoor units are turned off, then outdoor unit LEV is fully opened.
(2) Starting control for LEV
Cooling
Outdoor
LEV
Heating 0.7 x Base pulse 0.8 x Base pulse 0.9 x Base pulse
Cooling 0.7 x Base pulse
On Indoor
LEV
Heating
Cooling
Off Indoor
LEV
Heating
LEV
On state
indoor unit
- -
Feed back
-
control
-
-
Feed back
control control
- -
1 min 0.5 min
Fully closed
0.8 x Base pulse
Base pulse
Fully closed
200 pulse
LEV for Indoor Unit
Off state Thermo off state
Indoor unit Indoor unit
- -
- -
- -
- -
- -
0.5 min
Base pulse
0.9 x Base pulse 1.1 x Base pulse
Operation detail
0.5 min 0.5 min
Base pulse
On/Off
Service Manual 159