Light was moved from my vegative tent to my 4x4 flower tent for my first Autoflower grow. During the move a wire was pinched for the fan in the light, and that caused a no light situation. Vipraspectra customer service definitely knew this light was not needed for return, and they told me to open it and see if it was something loose or a driver that was out. Just a pinched wire keeping me from normalcy. This will be the first flowering with this light. I normally use it for veg on regular photoperiod cannabis. It's amazing for starting plants off right. I know this light will produce results after two years of use, and this light is the only one I've never replaced.