Dc solar powered air conditioner embraces both inverter technology (VRF) and Full
DC technology in the products, realizing that the domestic solar air conditioning can be directly operated by DC power from solar panels, without needing an inverter, controller or batteries. The system integrates with the intelligent control system realizing automatically increase, decrease or disconnect grid power. Solar power will be consumed in priority, the insufficient power will be supplied by the grid. In the sunshine day, it can start and operate by solar energy when the grid off. https://www.royalstarhomeapplian...tioner-best-quality.html