LG ATNH246FLFC - Outdoor Unit Functions; Compressor and Fan Control Logic

138 Synchro Air Conditioner
Outdoor Units
Outdoor Units (AUUH-)
1. Basic control
1.1 Normal operation
1.2 Compressor control
(1) Step Control : COMP Operation Step will be determined on the load according to the difference
between indoor Temp.and outdoor Temp.
- The general load → Operating in Standard Step
- Below the specified load → Operating in lower one step than standard step.
- The Hysterisis → Operating in a previous step .
Cooling mode Heating mode Stop state
Compressor
Fan Phase control Phase control After 30sec, Off
EEV
4 way valve Off On After 30sec, Off(Heating)
Step Control Step Control Stop
Target Suction super heat and
Discharge Temp. Control
Target Suction super heat and
Discharge Temp. Control
After 60sec, Full Opne
Capacity(Btu/h)
COMP
MODE
STEP1 STEP2 STEP3
B COMP A COMP B COMP A COMP B+A COMP
48k
aa
Cooling ●
Heating ●
72k
b b+b
Cooling ●
Heating ●
100k
cc
Cooling ●
Heating ●