Part 6 Service Diagnosis - Daikin FTX-N Series Service Manual

SiUS091601EA
1. General Problem Symptoms and Check Items .......................................108
2. Troubleshooting with LED .......................................................................109
3. Service Diagnosis ...................................................................................111
4. Error Codes and Description...................................................................123
5. Troubleshooting for FTX, FVXS Series...................................................124
6. Troubleshooting for FDMQ Series ..........................................................138
7. Troubleshooting for Outdoor Unit............................................................153

Part 6 Service Diagnosis

Service Diagnosis
2.1 Indoor Unit................................................................................................ 109
2.2 Outdoor Unit ............................................................................................. 110
3.1 ARC480 Series......................................................................................... 111
3.2 ARC466 Series......................................................................................... 114
3.3 BRC1E73 ................................................................................................. 117
3.4 BRC082A43 ............................................................................................. 119
5.1 Indoor Unit PCB Abnormality ................................................................... 124
5.2 Freeze-up Protection Control/Heating Peak-cut Control .......................... 126
5.3 Indoor Fan Motor (DC Motor) or Related Abnormality ............................. 128
5.4 Thermistor or Related Abnormality........................................................... 132
5.5 Low-voltage Detection or Over-voltage Detection.................................... 133
5.6 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)........ 135
5.7 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................. 137
6.1 Indoor Unit PCB Abnormality ................................................................... 138
6.2 Drain Level Control System Abnormality.................................................. 139
6.3 Indoor Fan Motor (DC Motor) or Related Abnormality ............................. 140
6.4 Indoor Fan PCB Abnormality.................................................................... 142
6.5 Humidifier or Related Abnormality............................................................ 143
6.6 Thermistor or Related Abnormality........................................................... 144
6.7 Remote Controller Thermistor Abnormality .............................................. 145
6.8 Low-voltage Detection or Over-voltage Detection.................................... 146
6.9 Signal Transmission Error (Between Indoor and Outdoor Unit) ............... 148
6.10 Signal Transmission Error (Between Indoor Unit and Remote Controller)
................................................................................................................. 150
6.11 Signal Transmission Error (Between MAIN/SUB Remote Controllers) .... 151
6.12 Mismatching of Indoor Unit and Outdoor Unit .......................................... 152
7.1 Outdoor Unit PCB Abnormality................................................................. 153
7.2 OL Activation (Compressor Overload) ..................................................... 154
7.3 Compressor Lock ..................................................................................... 157
7.4 DC Fan Lock ............................................................................................ 158
7.5 Input Overcurrent Detection ..................................................................... 159
7.6 Four Way Valve Abnormality.................................................................... 161
Part 6
106