Daikin RXSQ24TAVJU Service Manual page 152

1. Servicing Items to be Confirmed ............................................................. 142
2. Symptom-Based Troubleshooting........................................................... 144
3. Service Check Function .......................................................................... 149
4. Troubleshooting by Error Code ............................................................... 152
139
Service Diagnosis
1.1 Troubleshooting........................................................................................ 142
1.2 Precautions for Maintenance.................................................................... 142
1.3 Refrigerant Properties (R-410A)............................................................... 143
2.1 Indoor Unit Overall ................................................................................... 144
2.2 With Optional Infrared Presence/Floor Sensor......................................... 147
2.3 With Gas Furnace .................................................................................... 148
2.4 Gas Furnace Lockout Reset..................................................................... 148
3.1 Wired Remote Controller.......................................................................... 149
3.2 Wireless Remote Controller ..................................................................... 150
4.1 Error Codes and Descriptions .................................................................. 152
4.2 Error Codes - Sub Codes ......................................................................... 154
4.3 Error Code Indication by Outdoor Unit PCB ............................................. 156
4.4 External Protection Device Abnormality ................................................... 160
4.5 Indoor Unit PCB Abnormality ................................................................... 162
4.6 Drain Level Control System (S1L) Abnormality........................................ 163
4.7 Indoor Fan Motor (M1F) Lock, Overload .................................................. 165
4.8 Indoor Fan Motor Abnormality.................................................................. 168
4.9 Blower Motor Not Running ....................................................................... 172
4.10 Indoor Fan Motor Status Abnormality....................................................... 173
4.11 Low Indoor Airflow.................................................................................... 174
4.12 Swing Flap Motor Abnormality ................................................................. 175
4.13 Power Supply Voltage Abnormality .......................................................... 177
4.14 Blower Motor Stops for Over/Under Voltage ............................................ 178
4.15 Electronic Expansion Valve Coil Abnormality, Dust Clogging .................. 179
4.16 Gas Furnace Abnormality......................................................................... 180
4.17 Drain Level Above Limit ........................................................................... 181
4.18 Capacity Determination Device Abnormality ............................................ 182
4.19 Transmission Abnormality (between Indoor Unit PCB and Fan PCB) ..... 183
4.20 Blower Motor Communication Error ......................................................... 185
4.21 Climate Talk Communication Error .......................................................... 186
4.22 Thermistor Abnormality ............................................................................ 187
4.23 Combination Abnormality (between Indoor Unit PCB and Fan PCB)....... 188
4.24 Blower Motor HP Mismatch...................................................................... 189
4.25 Indoor Blower Does Not Have Required Parameters to Function ............ 190
4.26 Remote Sensor Abnormality .................................................................... 191
4.27 Humidity Sensor System Abnormality ...................................................... 192
4.28 Infrared Presence/Floor Sensor Error ...................................................... 193
SiUS331708EA
Part 6
Service Diagnosis