Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 3

SiBE341027
2. Detailed Control Functions....................................................................44
Part 5 Test Operation ................................................................. 60
1. Test Operation ......................................................................................61
2. Field Setting from Outdoor Unit.............................................................68
Part 6 Service Diagnosis............................................................. 90
1. Symptom-based Troubleshooting .........................................................92
2. Troubleshooting by Remote Controller .................................................95
Table of Contents
1.1 Operation Mode......................................................................................43
2.1 Stop Operation .......................................................................................44
2.2 Standby ..................................................................................................44
2.3 Startup Control .......................................................................................45
2.4 Normal Operation ...................................................................................46
2.5 Protection Control...................................................................................51
2.6 Special Control .......................................................................................57
1.1 Procedure and Outline ...........................................................................61
1.2 Check Operation ....................................................................................64
1.3 Checking in Normal Operation ...............................................................67
2.1 Field Setting from Outdoor Unit..............................................................68
2.1 Procedure of Self-diagnosis by Remote Controller ................................95
2.2 PCB Abnormality ..................................................................................104
2.3 Actuation of High Pressure Switch or Pressure Switch........................105
2.4 Actuation of High Pressure Switch (S1PH) or
Pressure Switch (S2P) .........................................................................106
2.5 Actuation of Low Pressure Sensor .......................................................108
2.6 Inverter Compressor Motor Lock..........................................................110
2.7 STD Compressor Motor Overcurrent/Lock...........................................112
2.8 Outdoor Unit Fan Motor Abnormality....................................................113
2.9 Electronic Expansion Valve Coil Abnormality (Y1E~Y3E)....................116
2.10 Abnormal Discharge Pipe Temperature ...............................................118
2.11 Humidity Alarm .....................................................................................120
2.12 Refrigerant Overcharged......................................................................122
2.13 High Pressure Switch System Abnormality ..........................................123
2.14 Abnormal Outdoor Fan Motor Signal....................................................124
2.15 Thermistor System Abnormality ...........................................................126
2.16 High Pressure Sensor Abnormality ......................................................127
2.17 Current Sensor Abnormality .................................................................129
2.18 High Pressure Sensor Abnormality ......................................................130
2.19 Low Pressure Sensor Abnormality .......................................................132
2.20 Inverter PCB Abnormality.....................................................................134
2.21 Inverter Radiation Fin Temperature Rise .............................................136
2.22 Momentary Overcurrent of Inverter Compressor..................................137
2.23 Overcurrent Abnormal of Inverter Compressor ....................................139
2.24 Inverter Compressor Starting Abnormality ...........................................141
2.25 Transmission System Error (between Inverter and Main PCB)............143
2.26 Inverter Over-Ripple Protection............................................................145
2.27 Inverter Radiation Fin Temperature Abnormality .................................147
2.28 Field Setting Abnormality after Replacing Main PCB or
Combination Error of PCB....................................................................148
2.29 Refrigerant Shortage ............................................................................149
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