Anyone got any weird ideas about this one?

During our recent freeze night (the one night where it actually dropped to freezing here in central Florida and folks reported ice from drippy water outside) our pool pump, as is normal, came on in "emergency" freeze protection mode. That's to recirculate water so it *doesn't* freeze in the pipes.

When that happened water started coming down off our roof and in going outside it was apparent it was coming from one of the solar panel areas. I couldn't see too much that night (nor, in that temp, did I want to try and investigate more :>) so I just let it leak. It did drain some amount of water out of the pool but I replaced it with a drippy hose at the same time.

The next morning there was an ice trail down from the top of one of the panels where the water had pretty obviously leaked out of. So I called the solar company and they scheduled someone to come out this week to take a look at things.

In the meantime I had shut off the water to the solar system, but I forget (old) that the automatic scheduler would simply turn it on the next day. Which it did... and there was no more leak.

At first we weren't sure the water was circulating through the panels, but after a few days it's obvious it has been, with no leaks. I am left with no particular explanation as to what could have happened.

My speculation runs from anything like there is some sort of automatic freeze value that popped out that night (and went back to normal) to a self-healing pipe (hey, my wife believes in miracles). But I'm not going to spend $140 or so (the solar company quote) just to have someone come out and look at something which doesn't appear to be, at the present, broken.

Does anyone have some real knowledge as to what was going on here? These are FAFCO solar panels if that helps.