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Si21-205
iv
Index
shelter ..........................................................267, 290
sound blanket .......................................................305
specifications ............................................................8
SPM .......................................................................70
stop valve cover ...........................................264, 289
suction air thermistor ............................................154
suction grille .................................................230, 255
swing flap motor malfunction / lock ......................149
swing motor ..................................................236, 263
switch box ............................................................237
T
terminal cover .......................................280, 283, 308
terminal strip .........................................................294
thermistor
discharge pipe, function (25/35 class)
.................................................86, 87, 98
discharge pipe, function (50/60 class)
...........................................102, 103, 113
discharge pipe, removal procedure ...............304
discharge pipe, troubleshooting .............174, 207
indoor heat exchanger, removal procedure ...244
indoor heat exchanger, troubleshooting
...................................................152, 153
outdoor air .............................................174, 207
outdoor heat exchanger, function (25/35 class)
.......................................................86, 87
outdoor heat exchanger, function (50/60 class)
...................................................102, 103
outdoor heat exchanger, removal procedure
...................................................280, 304
outdoor heat exchanger, troubleshooting
...................................................174, 207
radiation fin ............................................174, 207
remote controller ............................................155
suction air ......................................................154
thermistor or related abnormality (outdoor unit)
...............................................................173, 206
thermistor resistance check .................163, 189, 222
thermostat control ..................................................76
top panel ..............................................................286
top plate ...............................................................264
transmission error
between indoor and outdoor unit ...................156
between indoor unit and remote controller ... 157
between main and sub remote controller ...... 158
troubleshooting based on equipment condition
After shutting down, equipment does not
restart for a while. ............................ 124
Cooling / heating operation starts but stops
immediately. ..................................... 123
Equipment discharges dust. ......................... 130
Equipment discharges white mist. ................ 128
Equipment does not operate. ........................ 120
Equipment operates but does not provide cooling.
.......................................................... 125
Equipment operates but does not provide heating.
.......................................................... 127
Equipment produces loud noise or shakes. .. 129
Indoor fan operates, but compressor does not.
.......................................................... 121
Remote controller LCD displays "88". ........... 131
Swing flap does not operate. ........................ 132
turning speed pulse input on the outdoor unit
PCB check ................................................... 227
U
U0 ................................................................ 181, 214
U2 ................................................................ 183, 216
U4 ........................................................................ 156
U5 ........................................................................ 157
U8 ........................................................................ 158
UA ....................................................................... 159
UC ....................................................................... 161
unit No. change ..................................................... 71
V
voltage detection function ........................... 101, 116
W
wired remote controller .......................................... 18
wireless address switch (SS2) .............................. 61
wireless remote controller ..................................... 22
wiring diagrams ................................................... 317
wiring work
FFQ model ...................................................... 40
FHQ model ..................................................... 49
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 ...