Classic150... can it fail and pass-thru PV voltage to battery-bank?

[jta]

I've got a Magnum 4024, pre-wired with MidniteSolar E-panel & Classic 150. Over at this forum, there is an unverified case of a Victron 12v MPPT "failing" in such a way that PV voltage got passed-thru to battery.

Details in first post on thread at:

diysolarforum.com/threads/solar-charge-controller-failure-leading-to-lfp-fire.127623/

My Classic (and the whole pre-wired system) has been flawless for well over 5 years (past it's warranty period), so I'm very happy.

But, I'm not sure if either the classic 150 has "isolation" (correct term?) or e-panel would prevent this scenario? I searched the classic user guide, but "isolation/isolated" didn't come up in such a way as to explain this scenario ...

Any thoughts?

[ClassicCrazy]

In the many years on this forum , I have never heard of a Classic failing in a way that will pass PV voltage directly to batteries.
The Classics have been around for a very long time.
They are not isolated in that the negative is shared by both pv and battery .
Larry

[FNG]

To answer your question, The classic is technically not isolated but it would take a double failure to pass PV through. I believe we are shipping right around 90,000 in serial # now and I have been here for all 90K of them and do not recall ever seeing this double failure