‍SR501, micro-computer automatic controller for solar water heater, It is used to

control compact non pressurized solar water heater system.

Main functions:

1. SET CLOCK
2. Timing control water loading and backup heating at preset three time sections.
3. Temperature controlled water loading.
4. CTH Constant temperature heating.
5. LWPR Low water pressure protection
6. CWL Constant water level filling(preset 100% water level of tank)
7. PUMP Water filling pump
8. TCYC recirculation by temperature/flow within three time-sections.
9. AH Automatic thermostat function
10. OTF Three time –sections setting
11. TKPR Tank high temperature protection function.
12. CFR Tank anti-freezing protections.
13. LWS Preset the water level of water filling when tank is lack of water
14. LWSD Run-on time of water filing when tank is lack of water.
15. OTDI Thermal disinfection.
16. UNIT Celsius degree and Fahrenheit unit switch
17. BEEP Beeper error warning
18. Manual water filling.
19. Compulsive water filing function.
20. Manual heating.
21. Manual DHW circulation
22. Factory reset manually.
23. Water level water temperature sensor sensitivity adjustment
24. Pipe anti-freezing protection function.
25. View the measuring valve.
26. Overflow protection.
27. High temperature protection of collector tube’
28. Memory protection
29. Screen protection.
30. Trouble protection.
31. Error code description.

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