| F1 |
Indoor Room Temperature Sensor Error |
Temperature sensor malfunction. |
Check and replace the indoor room temperature sensor. |
| F2 |
Indoor Coil Temperature Sensor Error |
Coil temperature sensor is faulty. |
Replace the coil temperature sensor. |
| F3 |
Indoor Fan Motor Error |
Indoor fan motor malfunctioning. |
Inspect or replace the indoor fan motor. |
| F4 |
Outdoor Coil Temperature Sensor Error |
Faulty outdoor coil sensor. |
Check and replace the outdoor coil sensor. |
| F5 |
Outdoor Fan Motor Error |
Outdoor fan motor is not functioning properly. |
Check, repair, or replace the outdoor fan motor. |
| E1 |
High/Low Voltage Protection |
Power supply voltage is too high or too low. |
Ensure stable voltage supply; use a stabilizer if required. |
| E2 |
Communication Error between Indoor and Outdoor Units |
Connection problem between indoor and outdoor units. |
Check connection cables and communication circuit. |
| E3 |
Compressor Overcurrent Protection |
Compressor drawing too much current or malfunctioning. |
Inspect compressor, wiring, and refrigerant levels. |
| E4 |
Overheating Protection |
Compressor or unit overheating. |
Check for airflow issues, clean filters, and ensure refrigerant is sufficient. |
| P1 |
Low Refrigerant Protection |
Refrigerant level is too low. |
Check for refrigerant leaks and recharge refrigerant. |
| P2 |
High Pressure Protection |
High refrigerant pressure or clogged filters. |
Clean filters and check refrigerant levels. |
