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SiBE121123_A

135 Service Diagnosis

7.10 Discharge Pipe Temperature Control...................................................193

7.11 High Pressure Control in Cooling .........................................................194

7.12 Compressor Sensor System Abnormality ............................................195

7.13 Position Sensor Abnormality ................................................................196

7.14 DC Voltage / Current Sensor Abnormality............................................198

7.15 Thermistor or Related Abnormality (Outdoor Unit)...............................199

7.16 Electrical Box Temperature Rise..........................................................201

7.17 Radiation Fin Temperature Rise ..........................................................202

7.18 Output Overcurrent Detection ..............................................................204

8. Check ..................................................................................................206

8.1 Thermistor Resistance Check ..............................................................206

8.2 Fan Motor Connector Output Check ....................................................207

8.3 Hall IC Check .......................................................................................208

8.4 Indoor Electronic Expansion Valve Coil Check ....................................208

8.5 Power Supply Waveforms Check.........................................................209

8.6 Outdoor Electronic Expansion Valve Check.........................................210

8.7 Four Way Valve Performance Check ...................................................211

8.8 Inverter Unit Refrigerant System Check...............................................211

8.9 Inverter Analyzer Check .......................................................................212

8.10 Rotating Pulse Input on the Outdoor Unit PCB Check .........................214

8.11 Installation Condition Check.................................................................215

8.12 Discharge Pressure Check...................................................................215

8.13 Outdoor Unit Fan System Check..........................................................216

8.14 Main Circuit Short Check......................................................................216

8.15 Power Module Check ...........................................................................217

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