May 2, 20215 yr I recently purchased 3 x180w panels and a12V / 40A mppt controller from a supplier who assured my that exerything was compatable. I did the install myself. I knew the mppt was limited to 100v input. Wired the panels in series, connected the panels to mppt and was shocked to see 120v input and immediately disconnected the panels. Sadly mppt was tested and was reported as blown. Is it possible to repair the mppt ? Who would be to blame as I was assured that the panels and mppt were compatable ?
May 3, 20215 yr Not sure about MPPT repair, but I think those panels were probably meant to be wired in parallel.
May 3, 20215 yr I agree, panels should have been wired in parallel. Then it would have been 40v @ 4.5A and within spec of MPPT
May 3, 20215 yr 21 hours ago, BikerBrad said: I recently purchased 3 x180w panels and a12V / 40A mppt controller from a supplier who assured my that exerything was compatable. I did the install myself. I knew the mppt was limited to 100v input. Wired the panels in series, connected the panels to mppt and was shocked to see 120v input and immediately disconnected the panels. Sadly mppt was tested and was reported as blown. Is it possible to repair the mppt ? Who would be to blame as I was assured that the panels and mppt were compatable ? Unfortunately you are to be blamed as you wired the panels incorrectly in series and not parallel.
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