I have a strange problem
I am reinstalling an off grid solar system that was working fine a few weeks ago.
There are four strings of panels made up of x4 200watt panels per string. There are 4 strings total.
One of the string does not have any voltage!? I have tested voltage on the each panel in that string, and all are 100% fine at around 28 Volts (cloudy weather).
I am able to series two and then three together, but the moment I add the fourth panel, voltage drops to zero again.
This is very strange as each panel is 100% .
Anyone have any ideas, again, panels have been test individually and All have the same voltage. I have also put them in sets of two, and they work, but all 4 in one series string does not??!!
I am reinstalling an off grid solar system that was working fine a few weeks ago.
There are four strings of panels made up of x4 200watt panels per string. There are 4 strings total.
One of the string does not have any voltage!? I have tested voltage on the each panel in that string, and all are 100% fine at around 28 Volts (cloudy weather).
I am able to series two and then three together, but the moment I add the fourth panel, voltage drops to zero again.
This is very strange as each panel is 100% .
Anyone have any ideas, again, panels have been test individually and All have the same voltage. I have also put them in sets of two, and they work, but all 4 in one series string does not??!!
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