Daikin RXQ12AHR Service Manual page 164

1. Servicing Items to be Confirmed .........................................................160
2. Symptom-based Troubleshooting .......................................................162
3. Refrigerant Properties (R-410A) .........................................................166
4. Troubleshooting with Remote Controller.............................................167
5. Troubleshooting by Error Code ...........................................................183
158
Service Diagnosis
1.1 Troubleshooting....................................................................................160
1.2 Precautions for Maintenance................................................................160
2.1 With Optional Infrared Presence/Floor Sensor.....................................164
2.2 For All Outdoor Units............................................................................165
4.1 Wired Remote Controller......................................................................167
4.2 BRC4C, BRC7E Series ........................................................................168
4.3 BRC4M151W16 ...................................................................................170
4.4 Error Codes and Descriptions ..............................................................171
4.5 Error Codes (Sub Codes).....................................................................173
5.1 External Protection Device Abnormality ...............................................183
5.2 Indoor Unit PCB Abnormality ...............................................................184
5.3 Drain Level Control System Abnormality..............................................185
5.4 Indoor Fan Motor Lock, Overload.........................................................187
5.5 Indoor Fan Motor Abnormality..............................................................189
5.6 Power Supply Voltage Abnormality ......................................................194
5.7 Electronic Expansion Valve Coil Abnormality, Dust Clogging ..............197
5.8 Humidifier System Abnormality ............................................................198
5.9 Auto Grille Unit Error ............................................................................199
5.10 Capacity Determination Device Abnormality ........................................200
5.11 Transmission Abnormality (between Indoor Unit PCB and
Fan PCB)..............................................................................................201
5.12 Transmission Error ...............................................................................203
5.13 Transmission Error (between Indoor Unit PCB and
Auto Grille Control PCB) ......................................................................204
5.14 Thermistor Abnormality ........................................................................206
5.15 Combination Abnormality (between Indoor Unit PCB and Fan PCB)...207
5.16 Capacity Setting Abnormality ...............................................................208
5.17 Indoor Unit PCB Abnormality ...............................................................209
5.18 Infrared Presence/Floor Sensor Error ..................................................210
5.19 Remote Controller Thermistor Abnormality ..........................................215
5.20 Outdoor Unit Main PCB Abnormality....................................................216
5.21 Current Leakage Detection ..................................................................217
5.22 Missing of Leakage Detection Core .....................................................218
5.23 Activation of High Pressure Switch ......................................................219
5.24 Activation of Low Pressure Sensor ......................................................221
5.25 Inverter Compressor Motor Lock..........................................................223
5.26 Outdoor Fan Motor Abnormality ...........................................................225
SiAF341904E
Part 6
Part 6 Service Diagnosis