SiUS12-928_B
Service Diagnosis 134
7.2 Fan Motor Connector Check .................................................................... 192
7.3 Hall IC Check ........................................................................................... 192
7.4 Power Supply Waveform Check............................................................... 193
7.5 Outdoor Electronic Expansion Valve Check............................................. 194
7.6 Four Way Valve Performance Check ....................................................... 195
7.7 Inverter Unit Refrigerant System Check................................................... 195
7.8 “Inverter Checker” Check ......................................................................... 196
7.9 Rotation Pulse Check on the Outdoor Unit PCB...................................... 197
7.10 Installation Condition Check..................................................................... 198
7.11 Discharge Pressure Check....................................................................... 198
7.12 Outdoor Fan System Check ..................................................................... 199
7.13 Main Circuit Short Check.......................................................................... 199
7.14 Capacitor Voltage Check.......................................................................... 200
7.15 Power Module Check ............................................................................... 201
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