Question about solar panels

[farmgirl]

Ok Matt: What you say makes sense...BUT....All 4 of my panels have stickers on them that tell which end is supposed to go where, and which sides are "inlet" and "outlet". We have them set up as per manufacturer's directions, so we are a bit confused. This is a REAL SORE subject between DH and me, but he says he will try and help me figure it out over the weekend. I will have him read your posts tonight, and perhaps he will try a different setup with the soalr. Thank you so much for the tips! At this point, i will try anything!

[farmgirl]

AHA! I went home on lunch hour to see if the panels would do anything different with a few adjustments. I read earlier that if your flow from your pump was too strong, you may get incomplete flow thru the panels. So, I diverted the water flow by half, and guess what........with the water diverted, and the pump on the HI setting, ALL the panels turned cool (ie, they were working!) Weird, but i still do not understand why the 2 center panels do not work if the pump is on low. Any ideas? I did not think this was so complicated!!!

[matt4x4]

Question:
Are you feeding the panels on the lowest point or the highest point?
It's probably best to feed at the lowest so any air pockets can get pushed out.
I would still take one endcap on each of the suspect panels off and see if you can push a stick/rod through to the other end cap - who knows, maybe the labels are applied wrong - unscrewing the caps is not much work so it may be worth a try.
Another thing is that trapped air may then escape and alleviate this issue in the future.