Solar quit charging

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I have a new to me open box Yeti 1500X and am checking it out with my new portable Dometic CFX3 55 Liter fridge. The 110 VAC works consistently for charging but the new Renogy Flexible 100W panel did not. When I first plugged the panel in to the input Anderson PowerPole, it worked great for the first few minutes. Then it stopped working. Periodically the input meter flashes say 12 but then nothing. I have tried a different new Renogy Flexible 100W panel with no better results and tried solar to 8mm input but no improvement. I am thinking I need a warranty replacement. I do not think the MPPT solar controller is working.

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