SiUS121827E
Control Specification
Part 4 Functions and Control
113
4.8 Heating Peak-cut Control
Outline
During heating operation, the indoor heat exchanger temperature determines the frequency upper
limit to prevent abnormal high pressure.
Details
The operating frequency is judged with the indoor heat exchanger temperature 2 minutes after
the operation starts and
F
seconds after the number of the rooms in operation is changed.
The maximum value of the indoor heat exchanger temperature controls the following (excluding
the rooms not in operation).
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
62.5°C (144.5°F)
B
54°C (129.2°F)
C
53°C (127.4°F)
D
51°C (123.8°F)
E
49°C (120.2°F)
F
(seconds)
When increase
30
When decrease
2
Indoor heat exchanger
temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
(R23928)
D
C
B
A
E
Содержание 4MXL-T Series
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