Samsung AM080FX A Series Service Manual page 296

Piping Diagram
7-3 Functions (cont.)
7-3-1 Basics (cont.)
7-3-1-2 Refrigeration Cycle (cont.)
Points of Refrigerant Control (Heating Operation)
Cooling mode is affected by the quantity, capacity, and fan speed of active indoor units. Indoor air temperature and humid-
ity also affect the mode.
▪ Adjusting the compressor capacity
Adjust the compressor speed to match the condensing pressure to the target pressure. Condensing pressure is measured
by the high pressure sensor on the outdoor unit in order to adjust the heating capacity according to load.
▪ Adjust the outdoor unit EEV to sync the refrigerant superheated degree for the outdoor heat exchanger (formula: com-
pressor suction temperature - low pressure saturation temperature) with the target superheated degree.
▪ Adjust the indoor unit EEV to sync the refrigerant supercooling degree for the indoor heat exchanger (formula: high pres-
sure saturation temperature - entrance refrigerant temperature) with the target supercooling degree.
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