Models: ART-C50/9, ART-C75/9, ART-C100/9, ART-C125/9, ART-C150/9, ART-C200/9
| The fault | The fault code definition | Possible cause | Solution | ||
| code | |||||
| 1. The connection loose | 1. Reconnect firmly | ||||
| E5 | Wired controller | 2. Wired controller malfunction | 2. Replace a new one | ||
| communication the fault | 3. The communication wire is an open or short circuit | 3. Replace a normal one | |||
| 4. The indoor unit control board malfunction | 4. Replace a new one | ||||
| Input the power supply phase | 1. Phase loss | 1. Reconnect the wires firmly | |||
| E6 | 2. Low-voltage | 2. Check if the power supply is consistent with the | |||
| sequence protection | nameplate | ||||
| （The outdoor unit） | 3. Phase dislocation | 3. Exchange the two-phase sequence of the power | |||
| supply | |||||
| 1. The outdoor fan blade is broken | 1. Replace the fan blade | ||||
| 2. The connection between the fan blade and the outdoor fan motor | 2. Tighten or replace the sleeve | ||||
| loose | |||||
| 3. The outdoor fan stops working | 3. Eliminate the malfunction cause | ||||
| F2 | Discharge temperature | 4. The outdoor ventilation is insufficient | 4. Improve or enhance the ventilation | ||
| protection | 5. The outdoor exchanger is dirty or sticky | 5. Clean the heat exchanger | |||
| 6. Discharge temperature sensor deviation | 6. Replace the sensor | ||||
| 7. Refrigerant leak | 7. Find out the leak point, repair the welding, refill the freon | ||||
| unit after vacuuming it | |||||
| 8. The capillary or the filter is blocked | 8. Replace the capillary or filter | ||||
| 1. The globe valve is closed | 1. Open the globe valve | ||||
| 2. The outdoor fan blade is broken | 2. Replace the fan blade | ||||
| 3. The connection between the fan blade and the outdoor fan motor | 3. Tighten or replace the sleeve | ||||
| loose | |||||
| 4. The outdoor fan stops working | 4. Eliminate the malfunction cause | ||||
| EH | High-pressure protection | 5. The outdoor ventilation is insufficient | 5. Improve or enhance the ventilation | ||
| 6. The connection between the high-pressure switch and the control | 6. Reconnect the wire to the control board | ||||
| board lose | |||||
| 7. High-pressure switch malfunction | 7. Replace the high-pressure switch | ||||
| 8. The outdoor exchanger is dirty or sticky | 8. Clean the heat exchanger | ||||
| 9. There are some moistures in the refrigerant line | 9. Refill the freon unit after vacuuming it | ||||
| 10. The capillary or the filter is blocked | 10. Replace the capillary or filter | ||||
| 1. The globe valve is closed | 1. open the globe valve | ||||
| EL | Low-pressure protection | 2. The indoor fan blade is broken | 2. tighten or replace the sleeve | ||
| 3. The connection between the fan blade and the indoor fan motor | 3. the indoor fan blade was broken | ||||
| loose | |||||
| 4. The outdoor fan stops working | 4. Eliminate the malfunction cause | |||||
| 5. Filter net is dirty | 5. Clean the filter | |||||
| 6. Refrigerant leak | 6. Find out the leak point, repair the welding, refill the freon | |||||
| unit after vacuuming it | ||||||
| 7. The connection between the low-pressure switch and the control board | 7. Reconnect the wire to the control board | |||||
| loose | ||||||
| 8. Low-pressure switch malfunction | 8. Replace the low-pressure switch | |||||
| 9. The capillary or the filter is blocked | 9. Replace the capillary or filter | |||||
| 1. Sensor directly contacts with the heat exchanger | 1. Refix the sensor correctly | |||||
| E1 | The indoor ambient temperature | 2. Sensor plug insert again | 2. Reinsert | |||
| sensor the fault | 3. Sensor is an open or short circuit | 3. Replace the sensor | ||||
| 4. The indoor unit control board malfunction | 4. Replace the indoor unit control board | |||||
| 1. Sensor separated from the coil | 1. Refix the sensor correctly | |||||
| E3 | The indoor coil temperature sensor | 2. Sensor plug insert again | 2. Reinsert | |||
| the fault (TE) | 3. Sensor is an open or short circuit | 3. Replace the sensor | ||||
| 4. The indoor unit control board malfunction | 4. Replace the indoor unit control board | |||||
| 1. Sensor separated from the coil | 1. Refix the sensor correctly | |||||
| E2 | The outdoor coil temperature | 2. Sensor plug insert again | 2. Reinsert | |||
| sensor the fault (TW) | 3. Sensor is an open or short circuit | 3. Replace the sensor | ||||
| 4. The outdoor unit control board malfunction | 4. Replace the outdoor unit control board | |||||
| 1. Sensor separated from the copper tube | 1. Refix the sensor correctly | |||||
| E8 | Discharge temperature （TP） | 2. Sensor plug insert again | 2. Reinsert | |||
| sensor the fault | 3. Sensor is an open or short circuit | 3. Replace the sensor | ||||
| 4. The outdoor unit control board malfunction | 4. Replace the outdoor unit control board | |||||
| The outdoor ambient | 1. Sensor directly contacts with the heat exchanger | 1. Refix the sensor correctly | ||||
| E7 | 2. Sensor plug insert again | 2. Reinsert | ||||
| temperature. Sensor | ||||||
| 3. Sensor is an open or short circuit | 3. Replace the sensor | |||||
| abnormal (TL) | ||||||
| 4. The outdoor unit control board malfunction | 4. Replace the outdoor unit control board | |||||