Error Codes and Issues
| Error Code | Problem |
|---|---|
| E1 | The plastic temperature sensor is abnormal. Display priority level: 2 |
| E2 | The copper temperature sensor is abnormal (outdoor). Display priority level: 4 |
| E3 | The copper temperature sensor is abnormal (indoor). Display priority level: 3 |
| E4 | PG motor feedback is abnormal. Display priority level: 1 |
| E5 | Outdoor unit malfunction |
| E6 | Overcurrent protection |
| E7 | External feedback failure |
| E8 | Overheating protection |
| E9 | Water pump failure |
| dF | Indicates “dF” or shows the defrost indicator |
| L1 | Evaporator pipe or well sensor failure |
| L2 | Ambient temperature sensor failure |
| L6 | No feedback from the internal fan motor |
AUX Wall-Mounted Units
Self-Check Information: Defrost Tip
| Self-Check Code Type | Details |
|---|---|
| Lumotron Self-Check Code: Flashes 1 time/1 second | Digital Self-Check Code: Displays “dF” or defrost indicator screens |
| Self-Check Info: Tip for cold wind defense |
Ambient Temperature Sensor Failure
| Lumotron Self-Check Code: Flashes 1 time/3 seconds |
| Digital Self-Check Code: Fan motor image not functioning |
Coiled Pipe Sensor Failure
| Lumotron Self-Check Code: Flashes 2 times/4 seconds (Flashes 2 times/8 seconds) |
| Digital Self-Check Code: E2/(L2) |
Outdoor Unit Malfunction
| Lumotron Self-Check Code: Flashes 3 times/5 seconds (Flashes 1 time/8 seconds) |
| Digital Self-Check Code: E3/(L1) |
No Feedback from Internal Fan Motor
| Lumotron Self-Check Code: Flashes 4 times/6 seconds (Bright) |
| Digital Self-Check Code: E4/(E5) |
Zero-Cross Signal Without Current
| Lumotron Self-Check Code: Flashes 5 times/7 seconds (Flashes 6 times/8 seconds) |
| Digital Self-Check Code: E5/(L6) |
External Feedback Failure
| Lumotron Self-Check Code: Flashes 6 times/8 seconds |
| Digital Self-Check Code: E6 |
Overheating Protection
| Lumotron Self-Check Code: Flashes 7 times/9 seconds |
| Digital Self-Check Code: E7 |
Water Pump Failure
| Lumotron Self-Check Code: Flashes 8 times/10 seconds |
| Digital Self-Check Code: E8 |
Defrost Indicator
| Lumotron Self-Check Code: Flashes 9 times/11 seconds |
| Digital Self-Check Code: E9 |
