Solid Red: Error-Reversed Polarity. You have the wires hooked up backwards. Red needs to be hooked up to positive and black to negative.
Solid Green: Battery is fully charged
Blinking Red: Working to charge the battery (Activated)
Blinking Green: (Not active yet) Sunshine is effective and is producing power, but it’s not active, meaning it doesn’t have anything to send its power to. Hook the wires to the battery to start charging the battery.