Part 6 Service Diagnosis - Daikin D-Series Service Manual

Si12-619A
1. Caution for Diagnosis.........................................................................202
2. Problem Symptoms and Measures .....................................................204
3. Service Check Function ......................................................................205
4. Code Indication on the Remote Controller ..........................................208
5. Troubleshooting ..................................................................................209
6. Check ..................................................................................................260
Service Diagnosis
Service Diagnosis
1.1 Troubleshooting with Operation Lamp .................................................202
4.1 Error Codes and Description of Fault ...................................................208
5.1 Indoor Units ..........................................................................................209
5.2 Outdoor Units .......................................................................................210
5.3 Indoor Unit PCB Abnormality ...............................................................211
5.4 Freeze-up Protection Control or High Pressure Control.......................212
5.5 Fan Motor or Related Abnormality .......................................................214
5.6 Thermistor or Related Abnormality (Indoor Unit)..................................217
5.7 Shutter Drive Motor / Shutter Limit Switch Abnormality .......................218
5.8 Signal Transmission Error (between Indoor and Outdoor Units)..........219
5.9 Unspecified Voltage (between Indoor and Outdoor Units) ...................221
5.10 Freeze-up Protection Control ...............................................................222
5.11 Outdoor Unit PCB Abnormality.............................................................224
5.12 OL Activation (Compressor Overload) .................................................225
5.13 Compressor Lock .................................................................................226
5.14 DC Fan Lock ........................................................................................228
5.15 Input Over Current Detection ...............................................................229
5.16 Four Way Valve Abnormality................................................................231
5.17 Discharge Pipe Temperature Control...................................................233
5.18 High Pressure Control in Cooling .........................................................234
5.19 Compressor Sensor System Abnormality ............................................236
5.20 Position Sensor Abnormality ................................................................238
5.21 CT or Related Abnormality ...................................................................239
5.22 Thermistor or Related Abnormality (Outdoor Unit)...............................241
5.23 Electrical Box Temperature Rise..........................................................243
5.24 Radiation Fin Temperature Rise ..........................................................247
5.25 Output Over Current Detection.............................................................251
5.26 Insufficient Gas.....................................................................................253
5.27 Low-voltage Detection or Over-voltage Detection................................257
5.28 Signal Transmission Error (on Outdoor Unit PCB)...............................258
5.29 Anti-icing Function in Other Rooms / Unspecified Voltage
(between Indoor and Outdoor Units) ....................................................259
6.1 How to Check .......................................................................................260
Part 6
201