Part 6 Service Diagnosis - Daikin B-Series Service Manual

Si06-313
1. Caution for Diagnosis............................................................................68
2. Problem Symptoms and Measures .......................................................69
3. Service Check Function ........................................................................70
4. Troubleshooting ....................................................................................71
5. Check ..................................................................................................104
Service Diagnosis
Service Diagnosis Service Diagnosis Service Diagnosis Service Diagnosis
4.1 Error Codes and Description ..................................................................71
4.2 Indoor Unit PCB Abnormality .................................................................72
4.3 Freeze-up Protection Control or High Pressure Control.........................73
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................75
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................77
4.6 Shutter Drive Motor / Shutter Limit Switch Abnormality .........................78
4.7 Signal Transmission Error (between Indoor and Outdoor Units)............79
4.8 OL Activation (Compressor Overload) ...................................................80
4.9 Compressor Lock ...................................................................................81
4.10 DC Fan Lock ..........................................................................................82
4.11 Input Over Current Detection .................................................................83
4.12 Four Way Valve Abnormality..................................................................85
4.13 Discharge Pipe Temperature Control.....................................................87
4.14 Position Sensor Abnormality ..................................................................88
4.15 CT or Related Abnormality .....................................................................89
4.16 Thermistor or Related Abnormality (Outdoor Unit).................................91
4.17 Electrical Box Temperature Rise............................................................93
4.18 Radiation Fin Temperature Rise ............................................................95
4.19 Output Over Current Detection...............................................................97
4.20 Insufficient Gas.......................................................................................99
4.21 Low-voltage Detection..........................................................................101
4.22 High Pressure Control in Cooling .........................................................102
5.1 How to Check .......................................................................................104
Part 6 Part 6
Part 6 Part 6
67