Daikin FTX-N Series Service Manual page 112

SiUS091601EA
7.7 Discharge Pipe Temperature Control....................................................... 163
7.8 High Pressure Control in Cooling ............................................................. 165
7.9 System Shutdown due to Temperature Abnormality in the Compressor
................................................................................................................. 167
7.10 Compressor Sensor System Abnormality ................................................ 168
7.11 Position Sensor Abnormality .................................................................... 169
7.12 Thermistor or Related Abnormality (Outdoor Unit)................................... 172
7.13 Electrical Box Temperature Rise.............................................................. 174
7.14 Radiation Fin Temperature Rise .............................................................. 176
7.15 Output Overcurrent Detection .................................................................. 178
7.16 Signal Transmission Error on Outdoor Unit PCB ..................................... 180
8. Check ......................................................................................................181
8.1 Thermistor Resistance Check .................................................................. 181
8.2 Indoor Fan Motor Connector Check ......................................................... 182
8.3 Power Supply Waveform Check............................................................... 184
8.4 Electronic Expansion Valve Check........................................................... 184
8.5 Four Way Valve Performance Check ....................................................... 185
8.6 Inverter Unit Refrigerant System Check................................................... 185
8.7 Inverter Analyzer Check ........................................................................... 186
8.8 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 189
8.9 Installation Condition Check..................................................................... 190
8.10 Discharge Pressure Check....................................................................... 190
8.11 Outdoor Fan System Check ..................................................................... 191
8.12 Main Circuit Short Check.......................................................................... 191
8.13 Power Module Check ............................................................................... 194
107 Part 6 Service Diagnosis