22 Vdc but controller won't charge ...
I recently bought a solar kit with pair of 100W panels, a 30 amp controller, and a variety of cables & connectors to tie them all together. When I connect the controller to my battery (which is at 12.4V), it lights up & says it's good to go. But when I plug in the panels, which wired in parallel are putting out over 22 V, the controller refuses to see the voltage.
Now, this is the second kit I've used--the first one reacted the same way, so I sent it back for replacement, on the manufacturer's recommendation. This second one did actually start to charge, once, but hasn't worked since that time.
Before I file a complaint I want to ask here: Is there something dumb I need to check, showing it's my own fault?
I have tested for voltage at every possible point between the panels' built-in cables and the bare ends of the extensions just before I screw them into the controller, and they're producing juice. I've also paid attention to the polarity, and it's correct. But the controller's PV light is refusing to turn on, and after I've plugged in the extension cables, the screws of the controller's connectors show no voltage drop at all.
Any suggestions that might help? Thanks!