Before switching on the system, make sure that the physical installation has been completed and that all electrical connections are properly secured.
Both the S1-200 and S1-700 systems have an ON/OFF switch located on the controller. The LED on the controller shows the system status:
- Flashing green = Standby mode (pump is OFF)
- Solid green = Pump is ON and operating
If you see different LED combinations, please refer to the LED sequence guide:
For S1-200 systems
When PV power is available, the S1-200 controller will activate automatically — even if the ON/OFF switch is in position "0" (OFF). You will see a flashing green LED, indicating that the controller is in standby mode.
To turn on the S1-200 system:
- In case a PV Disconnect has been installed (optional), turn it ON first.
- Turn the controller switch to the “1” (ON) position.
The LED will turn solid green, indicating the pump is running.
Watch the video below for a visual explanation:
For S1-700 systems
WARNING – The ON/OFF switch is a functional switch and does not disconnect power. A PV Disconnect switch meeting the requirements of IEC/EN 60947-3 and rated at 60 V DC and minimum 25 A DC must be installed for safe isolation of the controller.
To turn on the S1-700 system:
- Turn ON the "PV Disconnect" first.
The controller will power up (position "0" - OFF), and the LED will show flashing green (standby). - Then, switch the controller switch to position "1" (ON).
The LED will turn solid green, and the pump will start operating.
Watch the video below for a visual explanation.
