Troubleshooting for the 19 Series and Daikin Aurora
Fault Diagnosis
To perform error code diagnosis:
- Press and hold the CANCEL button for 5 seconds.
- Press ON or OFF to check on the error code.
*Press on the button repeatedly until a long "beep" acknowledgement heard from the indoor unit.
To exit from error code diagnosis:
- Press and hold the CANCEL button for 5 seconds.
*The code display will cancel itself if the button is not pressed for 1 minute.
Error Code Definitions
| Error Code | Meaning |
|---|---|
| 00 | Normal |
| A1 | Indoor PCB error |
| A3 | Drain pump abnormal |
| A5 | Antifreeze |
| A6 | Indoor fan motor abnormal |
| AH | Electrical air cleaner abnormal |
| C4 | Indoor heat exchanger (1) thermistor short / open |
| C5 | Indoor heat exchanger (2) thermistor short / open |
| C7 | Louver limit switch error |
| C9 | Indoor room thermistor short / open |
| E1 | Outdoor PCB error |
| E3 | High pressure protection |
| E4 | Low pressure protection |
| E5 | Compressor motor lock / compressor overload |
| E6 | Compressor start-up error |
| E7 | Outdoor DC fan motor lock |
| E8 | AC input overcurrent |
| E9 | EXV error |
| EA | 4 way valve error |
| F3 | Discharge pipe overheat |
| F6 | Heat exchanger overheat |
| H0 | Compressor sensor system error |
| H3 | High pressure switch error |
| H6 | Compressor feedback detection error |
| H7 | Fan motor overload / overcurrent / sensor abnormal |
| H8 | AC current sensor error |
| H9 | Outdoor air thermistor short/open |
| J1 | Pressure sensor error |
| J3 | Compressor discharge pipe thermistor short / open / misplaced |
| J5 | Suction pipe thermistor short / open |
| J6 | Outdoor heat exchanger thermistor short / open |
| J7 | Subcooling heat exchanger thermistor short / open |
| J8 | Liquid pipe thermistor short / open |
| J9 | Gas pipe thermistor short / open |
| L1 | Inverter outdoor PCB error |
| L3 | Outdoor control box overheat |
| L4 | Heat sink overheat |
| L5 | IPM error / IGBT error |
| L8 | Inverter compressor overcurrent |
| L9 | Compressor overcurrent prevention |
| LC | Communication error (outdoor control PCB and inverter PCB) |
| P1 | Open phase or voltage unbalance |
| P4 | Heat sink thermistor short / open |
| PJ | Capacity setting error |
| U0 | Insufficient gas |
| U2 | DC voltage out of range |
| U4 | Communication error |
| U7 | Communication error (outdoor control PCB and IPM PCB) |
| UA | Installation error |
| UF | Piping & wiring installation mismatch / wrong wiring / insufficient gas |
| UH | Antifreeze (other rooms) |
For any enquiries on spare parts please contact Ready Refrigeration. If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit. Check the following fault conditions and causes for some simple troubleshooting tips.
| Fault | Causes / Action |
|---|---|
| The compressor does not operate 3 minutes after the air conditioner unit is started. | Protection against frequent starting. Wait for 3 to 4 minutes for the compressor to start operating. |
| The air conditioner unit does not operate. |
|
| The air flow is too low. |
|
| Discharge air flow has bad odor. | Odors may be caused by cigarettes, smoke particles, perfume etc. which might have adhered onto the coil. |
| Condensation on the front air grille of the indoor unit. |
|
| Water flowing out from the air conditioner unit. | Switch off unit and call dealer. |
