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Si21-205
Function and Control
73
Part 7
Function and Control
1. Indoor Unit.............................................................................................74
1.1
Function Outline .................................................................................... 74
1.2
Electric Function Parts........................................................................... 75
1.3
Function Details..................................................................................... 76
2. Outdoor Unit (25/35 class) ....................................................................86
2.1
Function of Thermistor........................................................................... 86
2.2
Mode Hierarchy ..................................................................................... 88
2.3
Frequency Control ................................................................................. 89
2.4
Controls at Mode Changing / Start-up ................................................... 91
2.5
Discharge Pipe Temperature Control .................................................... 92
2.6
Input Current Control ............................................................................. 92
2.7
Freeze-up Protection Control ................................................................ 93
2.8
Heating Peak-cut Control ...................................................................... 93
2.9
Fan Control............................................................................................ 94
2.10 Moisture Protection Function 1
(Securing of Differential Pressure and Blown Air Temperature)............ 94
2.11 Moisture Protection Function 2.............................................................. 95
2.12 Defrost Control ...................................................................................... 96
2.13 Electronic Expansion Valve Control ...................................................... 97
2.14 Malfunctions ........................................................................................ 100
2.15 Forced Operation Mode....................................................................... 101
2.16 Voltage Detection Function ................................................................. 101
3. Outdoor Unit (50/60 class) ..................................................................102
3.1
Function of Thermistor......................................................................... 102
3.2
Mode Hierarchy ................................................................................... 104
3.3
Frequency Control ............................................................................... 105
3.4
Controls at Mode Changing / Start-up ................................................. 107
3.5
Discharge Pipe Temperature Control .................................................. 108
3.6
Input Current Control ........................................................................... 108
3.7
Freeze-up Protection Control .............................................................. 109
3.8
Heating Peak-cut Control .................................................................... 109
3.9
Fan Control.......................................................................................... 110
3.10 Moisture Protection Function 2............................................................ 110
3.11 Low Hz High Pressure Limit ................................................................ 111
3.12 Defrost Control .................................................................................... 111
3.13 Electronic Expansion Valve Control .................................................... 112
3.14 Malfunctions ........................................................................................ 115
3.15 Forced Operation Mode....................................................................... 116
3.16 Voltage Detection Function ................................................................. 116
Summary of Contents for Sky Air B-Series R-410A
Page 7: ...Si21 205 vi Table of Contents ...
Page 15: ...Models Si21 205 4 Model Name and Power Supply ...
Page 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Page 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Page 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Page 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Page 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Page 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...