SiUS121736EA
v Table of Contents
7.11 Four Way Valve Abnormality.................................................................... 193
7.12 Discharge Pipe Temperature Control....................................................... 195
7.13 High Pressure Control in Cooling ............................................................. 196
7.14 Compressor Sensor System Abnormality ................................................ 197
7.15 Position Sensor Abnormality .................................................................... 199
7.16 CT or Related Abnormality ....................................................................... 201
7.17 Thermistor or Related Abnormality (Outdoor Unit)................................... 203
7.18 Electrical Box Temperature Rise.............................................................. 205
7.19 Radiation Fin Temperature Rise .............................................................. 206
7.20 Output Overcurrent Detection .................................................................. 207
8. Check ......................................................................................................209
8.1 Thermistor Resistance Check .................................................................. 209
8.2 Indoor Fan Motor Connector Check ......................................................... 210
8.3 Hall IC Check ........................................................................................... 211
8.4 Power Supply Waveform Check............................................................... 211
8.5 Electronic Expansion Valve Check........................................................... 212
8.6 Four Way Valve Performance Check ....................................................... 213
8.7 Inverter Unit Refrigerant System Check................................................... 213
8.8 Inverter Analyzer Check ........................................................................... 214
8.9 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 215
8.10 Installation Condition Check..................................................................... 216
8.11 Discharge Pressure Check....................................................................... 216
8.12 Outdoor Fan System Check ..................................................................... 217
8.13 Main Circuit Short Check.......................................................................... 217
8.14 Capacitor Voltage Check.......................................................................... 218
8.15 Power Module Check ............................................................................... 219
Part 7 Trial Operation and Field Settings.................................... 220
1. Pump Down Operation............................................................................221
2. Forced Cooling Operation .......................................................................222
3. Wiring Error Check Function ...................................................................223
4. Trial Operation ........................................................................................225
4.1 RA Indoor Unit.......................................................................................... 225
4.2 SA Indoor Unit.......................................................................................... 227
5. Field Settings ..........................................................................................230
5.1 Outdoor Unit ............................................................................................. 230
5.2 RA Indoor Unit.......................................................................................... 232
5.3 SA Indoor Unit.......................................................................................... 237
6. Silicone Grease on Power Transistor/Diode Bridge................................249
Part 8 Appendix............................................................................ 250
1. Piping Diagrams......................................................................................251
1.1 Indoor Unit................................................................................................ 251
1.2 Outdoor Unit ............................................................................................. 254
2. Wiring Diagrams......................................................................................256
2.1 Indoor Unit................................................................................................ 256
2.2 Outdoor Unit ............................................................................................. 263
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