Solar panel output low

[RoamingKat]

Latest test...

    I hung 4 100w flex panels, tilted to the sun, kept them covered up.

Covered the two solar panels (2 345w) up top.

Batteries were at 13.8.   Battery monitor also showing 100% full.

Turned on the AC.    While I was watching I saw the volts drop to 13.4 rather quickly.

At 13.1 I turned off the AC.  Uncovered both the panels up top which are connected to the Morningstar, and the flex panels which are connected to the Victron.   


Turned the AC back on. Watching the charge controllers......

The 400w of flex panels were delivering 27 amps according to the Victron.
The 690w of fixed panels on the roof were delivering 15 amps according to the Morningstar 

I continued to lose amps from the battery.   I was at 78% when I uncovered the panels.  After 5 minutes I was at 74% .... still at 13.1 of course, because lifepo4 will hold that flat till it dips to about 20%.  

I think those panels up top (690w) are not functioning according to spec.   They are wired in parallel...BUT! it seems that both of them are behaving the same....(info from the previous test.) Cannot figure out why they would both be acting the same if there was any kind of damage to one. Plus, baffled how identical damage could have happened to both. There is no physical evidence of any damage. There must be something more basic that effects the entire system of both panels and the controller.....? The only things they have in common are the combiner box and the cable (6 gauge) coming down to a 60 amps circuit breaker. Then to the controller.

Or, the damage was systemic occurring to both from having the circuit breaker popped in the midday sun? Since they share the same cable down from the roof. But, does it even sound plausible that both panels would have been effected in exactly the same manner? How might I test that directly to prove or disprove that?

Btw...I moved the temp probe around each battery (pack of 3 cells). Found no variation in temperature after waiting several minutes each time. Balances are all showing green. The battery does not seem to be acting in a manner inconsistent with its spec.