LG multi V PLUS - Discharge Temperature Control

Service Manual 215
Function
3.2 Discharge temperature control
■ Outdoor unit's control on cooling, heating mode
■ Indoor unit's control on cooling, heating mode
Emergency
SH control
System stop
103< Tdis ≤115 ˚C
Tdis >115 ˚C
Temperature range LEV
Keep current control
98 ˚C<Tdis ≤103 ˚C
SH control
Tdis ≤98 ˚C
If liquid injection is on,
No frequency up,
After 2min → 5Hz/30sec
System stop
103< Tdis ≤115 ˚C
Tdis >115˚C
Temperature range Compressor
On
Liquid
injection
If liquid injection is on,
No frequency up,
After 2min → 5Hz/30sec
98 ˚C<Tdis ≤103 ˚C
Keep
state
Pressure control
Tdis ≤98 ˚C
Off
Max. limit
300 pulse
Subcooling
LEV
If liquid is on,
Max. limit
300 pulse
Max. limit
150 pulse
Pressure control
Tdis >95 ˚C
Off
10 pulse open
/10sec