Discharge Temperature Control; Inverter Protection Control - LG MULTI V IV ARNU07GTU 2 Series Service Manual

Function

3.2 Discharge temperature control

n Outdoor unit control
Temperature range
Tdis >110℃
Tdis >108℃
Tdis≥ 105℃
Tdis≤ 100℃
Tdis >100℃
SC : Sub Cooling, SH : Super Heating

3.3 Inverter protection control

Cooling mode
4.8Hp
AC Input Current
22A or less
Compressor Current
24A or less
Heating mode
4.8Hp
AC Input Current 22A or less
Compressor Current
26A or less
h AC input current is input current of inverter compressor except constant current (current pass through noise filter)
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Only for training and service purposes
Compressor Sub cooling EEV
OFF SC,SH decrease control
-5Hz/10sec. SC,SH decrease control
Frequency holding SC,SH decrease control
Normal control SC,SH decrease control
Normal control SC,SH decrease control
Normal Operation
6.8Hp 4.8Hp
30A or less 22A or more
35A or less 24A or more
Normal Operation
6.8Hp 4.8Hp
30A or less 22A or more
35A or less 26A or more
SH decrease control
SH decrease control
SH decrease control
SH decrease control
SH decrease control
Frequency Down
6.8Hp
30A or more 22A or more
35A or more 30A or more
Frequency Down
6.8Hp
30A or more 22A or more
35A or more 30A or more
- 26 -
IDU EEV
System Stop
4.8Hp 6.8Hp
32A or more
41A or more
System Stop
4.8Hp 6.8Hp
32A or more
41A or more
LGE Internal Use Only