Main Function 

1. Mode: auto, cool, dry, fan and heat 

2. FAN: high, medium and low 

3. Over heat/cold protection for room coil pipe 

4. In heat mode, defrost according to temperature difference of inlet and outlet air 

5. Lack of cooling agent(liquid) protection. 

6. Out-door fan controlled by a standalone output to make defrost effect well 

7. Blow residual heat function 

8. 3 minutes protecting delay to restart compressor 

9. Panel control all function, LED digits display 

10. Avoid cold wind in heat mode 

11. Two temperature sensors 

12. Wind direction control 

12. Emergent on/off key 

13. Aux heater control 

14. Timer inline/offline