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2.1.3 Compressor stage during oil return control defrost control
■ Compressor stage at normal oil return state
2 unit combination : 60Hz + stage 2
3 unit combination : 60Hz + stage 3
■ High pressure limit
■ Low pressure limit
High pressure < 3284 kpa
High pressure ≥ 3546 kpa
Pressure range Compressor combination
Refer to combination table
Normal
Pressure range Compressor combination
Refer to combination table
Normal
Low pressure ≥ 242 kpa
Low pressure ≤ 229 kpa
Function
■ Comp. combination during defrost control
Pressure limit Normal
Before 70sec.
1 unit
2 unit
3 unit
Before 70sec.after 70sec. after 70sec.
1unit(half size) minimum Hz
50 Hz
45 Hz
45 Hz +
constant comp.1
60 Hz
80 Hz
45 Hz +
constant comp.1
45 Hz +
constant comp.2
50 Hz
60 Hz
60 Hz +
constant comp.1
60 Hz +
constant comp.2
80 Hz
60 Hz +
constant comp.1
60 Hz +
constant comp.2
60 Hz +
constant comp.3