SiUS071735EB Control Specification
Functions and Control 38
2.7 Heating Peak-cut Control
During heating operation, the indoor heat exchanger temperature determines the frequency upper
limit to prevent abnormal high pressure.
The operating frequency limitation is judged with the indoor heat exchanger temperature.
09/12 class 15 class 18 class 24 class
(°C) (°F) (°C) (°F) (°C) (°F) (°C) (°F)
A 57.5 135.5 60 140.0 60 140.0 60 140.0
B 55 131.0 54 129.2 55 131.0 54 129.2
C 52 125.6 51 123.8 52 125.6 51 123.8
D 50 122.0 49 120.2 50 122.0 49 120.2
E 45 113.0 44 111.2 45 113.0 44 111.2
Zone Control
Stop zone When the temperature reaches the stop zone, the compressor stops.
Dropping zone The upper limit of frequency decreases.
Keep zone The upper limit of frequency is kept.
Up zone The upper limit of frequency increases.
Reset zone The upper limit of frequency is canceled.
Indoor heat exchanger
temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
(R23928)
D
C
B
A
E
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