Control Specification SiBE121135_A
119 Function and Control
4.7 Heating Peak-cut Control
Outline During heating operation, the indoor heat exchanger temperature determines the frequency
upper limit to prevent abnormal high pressure.
Detail The operating frequency is judged with the indoor heat exchanger temperature 2 minutes
after the operation starts and
F seconds after the number of operation room is changed.
The maximum value of the indoor heat exchanger temperature controls the following
(excluding stopped rooms).
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.
A (°C) 65
B (°C) 55
C (°C) 54
D (°C) 52
E (°C) 50
Indoor heat exchanger
thermistor temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
(R14645)
D˚C
C˚C
B˚C
A˚C
E˚C
F (seconds)
30
2
When increase
When decrease