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Old 04-09-2012, 15:28   #1
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MPPT Troubleshooting Question

We bought a used boat with two solar controllers and what i think is another thing connected to a wind gen. While troubleshooting the electrical system trying to track down what's draining my batteries, I disconnected all the positive leads from the battery bank. all the controllers went blank. I reconnected the positive leads, but the controllers are still blank. While it was all disconnected, I put a meter on what should be the output of the MPPTs but there was no voltage.

Did I screw them up by disconnecting them from the batteries? I haven't seen the manuals for these, although they may be on board.
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Old 04-09-2012, 15:30   #2
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You may have killed them. Some will only accept being disconnected from the batteries after the solar power has been disconnected.
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Old 04-09-2012, 16:01   #3
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Re: MPPT troubleshooting question

Solar makes life a little complicated sometimes. Before disconnecting the batteries, you should disconnect the + side from the panels to the controller first. If your lucky there may be a fuse in the controller that blew...
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