| E1 |
High-pressure protection |
Check the condenser for blockages and ensure proper airflow. Inspect refrigerant levels. |
| E2 |
Indoor unit coil temperature sensor error |
Inspect the coil sensor and its connections. Replace if faulty. |
| E3 |
Low-pressure protection |
Check for refrigerant leaks, ensure proper pressure levels, and repair any leaks. |
| E4 |
Outdoor unit discharge temperature protection |
Check discharge temperature sensor and wiring for faults, ensure proper airflow in the outdoor unit. |
| E5 |
Overcurrent protection |
Check for power supply issues, and inspect the compressor and fan motors for damage. |
| E6 |
Communication error between indoor and outdoor units |
Verify the communication wiring and connections between indoor and outdoor units. |
| E7 |
Compressor overheat protection |
Let the compressor cool down, inspect for obstructions, and verify refrigerant levels. |
| E8 |
Indoor fan motor error |
Inspect the indoor fan motor and its wiring for faults or obstructions. |
| E9 |
Outdoor fan motor error |
Check the outdoor fan motor and wiring for issues. Ensure the fan is operating properly. |
| F0 |
Refrigerant leakage or low refrigerant |
Inspect for refrigerant leaks and refill if necessary. Check pressure sensors. |
| F1 |
Indoor ambient temperature sensor error |
Inspect the indoor temperature sensor for faults or loose connections. |
| F2 |
Outdoor ambient temperature sensor error |
Check the outdoor ambient sensor and its wiring for faults. |
| F3 |
Compressor discharge temperature sensor error |
Inspect the discharge sensor and its connections. Replace if needed. |
