Why does the load output of my solar controller keep shutting down?

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There are a couple reasons why the load output on the controller will turn off.

  1. If the batteries get too low (11V for 12V battery and 22V for 24V battery 44V for 48V Battery) the load output will turn off. This is to save the batteries from over-discharge. The load output will turn back on when the batteries get charged from the solar panel.
  2. Motors, pumps and inverters cannot be connected to the load output of the controller, or it will overload and turn off. Instead connect motors, pumps and inverters to the battery through a high current power relay. The relay will be connected and controlled by the load output of the solar controller. See sketch below for connection diagram.