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SiUS04-924
Control Specification
34
Function and Control
3.6
Freeze-up Protection Control
Outline
During cooling operation, the signals being sent from the indoor unit allow the operating frequency
limitation and then prevent freezing of the indoor heat exchanger. The signal from the indoor unit
must be divided into the zones as shown in the following diagram:
Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 seconds from
operation start.
Control in Each Zone Heating Peak-cut Control
3.7 Heating Peak-Cut Control
Outline
During heating operation, the signals being sent from the indoor unit allow the operating frequency
limitation and prevent abnormal high pressure. The signal from the indoor unit must be divided as
follows:
Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature.
Control in Each Zone
The heat exchanger’s intermediate indoor unit temperature controls the following:
(R9866)
Return from stop
Reference
Reset zone
Heat exchanger
thermistor temperature
Up zone
Keep zone
Dropping zone
Stop zone
55.4˚F(13˚C)
44.6˚F(7˚C)
41.0˚F(5˚C)
37.4˚F(3˚C)
32.0˚F(0˚C)
124.7˚F(51.5˚C)
122.0˚F(50.0˚C)
121.1˚F(49.5˚C)
Stop zone 149.0˚F(65˚C)
Dropping zone
Keep zone
Up zone
Reset zone 119.3˚F(48.5˚C)
(R9867)
Heat exchanger
thermistor
temperature
Summary of Contents for FTXS30HVJU
Page 1: ...SiUS04 924 Applied Models Inverter Pair Heat Pump Inverter Pair Wall Mounted Type H Series ...
Page 8: ...SiUS04 924 List of Functions 1 Part 1 List of Functions 1 List of Functions 2 ...
Page 10: ...SiUS04 924 Specifications 3 Part 2 Specifications 1 Specifications 4 ...
Page 50: ...Control Specification SiUS04 924 Function and Control 43 ...
Page 53: ...Instruction SiUS04 924 46 Operation Manual 2 Instruction 2 1 Remote Controller ...
Page 54: ...SiUS04 924 Instruction Operation Manual 47 operation ...
Page 55: ...Instruction SiUS04 924 48 Operation Manual 2 2 AUTO DRY COOL HEAT FAN Operation ...
Page 56: ...SiUS04 924 Instruction Operation Manual 49 ...
Page 58: ...SiUS04 924 Instruction Operation Manual 51 fins fins fins fins angles Inside ...
Page 60: ...SiUS04 924 Instruction Operation Manual 53 2 5 INTELLIGENT EYE Operation fins above ...
Page 61: ...Instruction SiUS04 924 54 Operation Manual ...
Page 62: ...SiUS04 924 Instruction Operation Manual 55 2 6 POWERFUL Operation ...
Page 63: ...Instruction SiUS04 924 56 Operation Manual 2 7 OUTDOOR UNIT QUIET Operation ...
Page 64: ...SiUS04 924 Instruction Operation Manual 57 2 8 ECONO Operation ...
Page 65: ...Instruction SiUS04 924 58 Operation Manual 2 9 TIMER Operation ...
Page 66: ...SiUS04 924 Instruction Operation Manual 59 ...
Page 69: ...Instruction SiUS04 924 62 Operation Manual ...
Page 70: ...SiUS04 924 Instruction Operation Manual 63 ...
Page 71: ...Instruction SiUS04 924 64 Operation Manual ...
Page 72: ...SiUS04 924 Instruction Operation Manual 65 3P228444 2B ...
Page 193: ...SiUS04 924 187 Appendix Part 9 Appendix 1 Piping Diagrams 188 2 Wiring Diagrams 189 ...