LG multi V PLUS, Service Manual

Page: 207 / 373

Service Manual 207
Function
2.1.3 Compressor stage during oil return control
■
Compressor stage at normal oil return state
2 unit combination : 60Hz + stage 2
3 unit combination : 60Hz + stage 3
4 unit combination : 60Hz + stage 4
■
High pressure limit
■
Low pressure limit
* Low pressure limit under –10˚C= normal limit pressure – 26kPa
2.1.3 Compressor stage during oil return control
Compressor stage at normal oil return state
< 2441 kPa Normal oil return
Emergncy Control 2441 kPa ~ 2657 kPa
Pressure range Compressor stage
Pressure range Compressor stage
36kPa ~ 52kPa
Normal oil return
Emergncy Control
> 101 kPa
Inv Compressor
Fan
Main LEV
4 way valve
Subcooling LEV
30 Hz
0 Hz
Full open
On
→
off
min.
Starting Component
Sub unit ’s
compressor
All off
Hot gas bypass
valve
On
60 Hz
High pressure
control
Full open
Off
min.
Running
On
On
30 Hz
High pressure
control
Base pulse
On
min.
Ending
Off
On