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Control Specification
SiUS091601E
47
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.
: The values might drop when the outdoor temperature is low to protect the compressor.
(R22994)
Reset zone
Indoor heat exchanger
thermistor temperature
Up zone
Keep zone
Dropping zone
Stop zone
13˚C (55.4˚F)
(Reference)
7˚C (44.6˚F)
5˚C (41.0˚F)
3˚C (37.4˚F)
0˚C (32.0˚F)
09/12 class
15 class
(°C)
(°F)
(°C)
(°F)
A
59
138.2 60
140.0
B
55
131.0 54
129.2
C
52
125.6 51
123.8
D
50
122.0 49
120.2
E
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
thermistor temperature
Stop zone
Dropping zone
Keep zone
Up zone
Reset zone
(R22995)
D
C
B
A
E
Summary of Contents for FTX09NMVJU
Page 12: ...SiUS091601E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 15: ...SiUS091601E Specifications 4 Part 2 Specifications 1 Specifications 5...
Page 65: ...SiUS091601E Remote Controller 54 Part 5 Remote Controller 1 FTX Series 55 2 FVXS Series 57...
Page 144: ...Revision History Month Year Version Revised contents 02 2016 SiUS091601E First edition...