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DEFECTIVE SOLAR CONTROLLER CNTLR-12

PostPosted: Thu Mar 30, 2017 12:24 pm
by Hippo
My CNTLR-12 no longer cuts off the solar panel charge to my batteries., when battery voltage reaches 14.3V as I had orginally set it. I checked all electrical connections and did not find anything wrong. I turned the high voltage potentiometer R14 counterclockwise numerous turns to see if at some point the relay would open, to no avail.

What do you suggest I check to confirm if the controller is definitely dead or to assess if the problem could be somewhere else?