Daikin FDMQ-R Series Service Manual

SiUS091601EA
iii Table of Contents
3.2 ARC466 Series......................................................................................... 114
3.3 BRC1E73 ................................................................................................. 117
3.4 BRC082A43 ............................................................................................. 119
4. Error Codes and Description...................................................................123
5. Troubleshooting for FTX, FVXS Series...................................................124
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. Troubleshooting for FDMQ Series ..........................................................138
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. Troubleshooting for Outdoor Unit............................................................153
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
7.7 Discharge Pipe Temperature Control....................................................... 163
7.8 High Pressure Control in Cooling ............................................................. 165
7.9 System Shutdown due to Temperature Abnormality in the Compressor
................................................................................................................. 167
7.10 Compressor Sensor System Abnormality ................................................ 168
7.11 Position Sensor Abnormality .................................................................... 169
7.12 Thermistor or Related Abnormality (Outdoor Unit)................................... 172
7.13 Electrical Box Temperature Rise.............................................................. 174
7.14 Radiation Fin Temperature Rise .............................................................. 176
7.15 Output Overcurrent Detection .................................................................. 178
7.16 Signal Transmission Error on Outdoor Unit PCB ..................................... 180
8. Check ......................................................................................................181
8.1 Thermistor Resistance Check .................................................................. 181
8.2 Indoor Fan Motor Connector Check......................................................... 182
8.3 Power Supply Waveform Check............................................................... 184

Daikin FDMQ-R Series Specifications

General

Brand	Daikin
Model	FDMQ-R Series
Category	Air Conditioner
Language	English