Main functions
1. Display clock and week
2. Display temperature: For top of tank, for heat collector, for bottom of tank
3. Temperature difference circulation pump provide three working scopes to choose
4. Temperature difference circulation
5. Three periods timing circulation for water-using end
6. Three periods timing heating
7. Frost protection for heat collector
8. Memory function
9. Display the fault of temperature sensor
10. Display the flux

11. Display the system pressure
12. Choose system (1-8 system available)
13. High temperature protection for water tank
14. Heat collector cooling function
15. Control the pump of the water-using end by time and temperature
16. Holiday function
17. Protect function (memory when power off, contradict bacterium)
18. Stop circulation (between heat collector and tank auto-matically under high temperature)
19. Adjust the start temperature and stop temperature for the temperature difference Circulation