It is a MCU based board which main function is measuring the temperature in the Solar Heating System, and controlling the work of the heating fluid pump.

The idea was replacing my own stock controller which was always breaking down. The biggest problem with my stock differential controller was that there was no protection in case of fault controller, in this case my Solar Heating system was overheating and the main valve exploded because of high pressure.

The solution was developing my own version of Differential Controller with protection in case of fault controller.

• User Friendly menu
• Adjustable on/off differential temperature
• 5VDC Power Supply
• Atmega328 based design-can be easily reprogrammed using Arduino Software
• 110/220ACV Pump Power Supply

• 10k NTC Sensors

• Preasemmbled PCB, Preprogrammed MCU

• NTC sensors
• 16X2 LCD Display
• Push buttons
• Select switch
• Printed instructions for assembly
• User manual