Control Specification
SiBE041525F
33
Functions and Control
3.6
Freeze-up Protection Control
During cooling operation, the signal sent from the indoor unit determines the frequency upper
limit and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit is
divided into zones.)
The operating frequency limitation is judged with the indoor heat exchanger temperature.
3.7
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.
A
(°C)
B
(°C)
C
(°C)
7
5
3
(R22433)
Reset zone
Indoor heat exchanger
thermistor temperature
Up zone
Keep zone
Dropping zone
Stop zone
0˚C
C
˚C
B
˚C
A
˚C
13˚C
20/25/35 class
50/60/71 class
A
(°C)
65
60
B
(°C)
55
54
C
(°C)
52
51
D
(°C)
50
49
E
(°C)
45
44
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
thermistor temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
(R22434)
D
˚C
C
˚C
B
˚C
A
˚C
E
˚C
Summary of Contents for FTX20K2V1B
Page 12: ...SiBE041525F 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 15: ...SiBE041525F Specifications 4 Part 2 Specifications 1 Specifications 5...
Page 16: ...Specifications SiBE041525F 5 Specifications 1 Specifications See corresponding databook...
Page 51: ...SiBE041525F Remote Controller 40 Part 5 Remote Controller 1 Remote Controller 41...
