Part 6 Service Diagnosis - Daikin ATXS35EV1B7 Service Manual

SiBE04-824
1. Caution for Diagnosis............................................................................76
2. Problem Symptoms and Measures .......................................................77
3. Service Check Function ........................................................................78
4. Troubleshooting ....................................................................................81
5. Check ..................................................................................................128
Service Diagnosis
Service Diagnosis
4.1 Error Codes and Description ..................................................................81
4.2 Indoor Unit PCB Abnormality .................................................................82
4.3 Freeze-up Protection Control or High Pressure Control.........................83
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................85
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................87
4.6 Signal Transmission Error (between Indoor and Outdoor Unit) .............88
4.7 Unspecified Voltage (between Indoor and Outdoor Units) .....................90
4.8 Outdoor Unit PCB Abnormality...............................................................91
4.9 OL Activation (Compressor Overload) ...................................................93
4.10 Compressor Lock ...................................................................................94
4.11 DC Fan Lock ..........................................................................................95
4.12 Input Over Current Detection .................................................................96
4.13 Four Way Valve Abnormality..................................................................99
4.14 Discharge Pipe Temperature Control...................................................101
4.15 High Pressure Control in Cooling .........................................................103
4.16 Compressor System Sensor Abnormality ............................................105
4.17 Position Sensor Abnormality ................................................................108
4.18 DC Voltage / Current Sensor Abnormality............................................109
4.19 CT or Related Abnormality ...................................................................110
4.20 Thermistor or Related Abnormality (Outdoor Unit)...............................112
4.21 Electrical Box Temperature Rise..........................................................114
4.22 Radiation Fin Temperature Rise ..........................................................116
4.23 Output Over Current Detection.............................................................120
4.24 Insufficient Gas.....................................................................................122
4.25 Over-voltage Detection.........................................................................126
4.26 Signal Transmission Error (on Outdoor Unit PCB)...............................127
5.1 How to Check .......................................................................................128
Part 6
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