[RE-wrenches] Cell damage leading to ground fault?

[david quattro]

Fronius install manual says the conduit entry ports need to be packed with
putty around the wires. They’re the only manufacturer I know of that
requires this. Water vapor roses into the circuit boards.    I used to get
a couple different error codes until we packed the conduits.
   Good luck, and let us know!



On Thu, May 8, 2025 at 12:22 PM Dave Tedeyan via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hello,
>
> There is an installation that I am servicing with the Q.Peak G4 modules,
> where one cell has some visible damage. I am wondering whether this type
> damage can lead to a ground fault? The Fronius inverter on site is
> picking up an "Insulation Resist" error. I am wondering whether this could
> be the cause, or whether I should look elsewhere in the array. A photo is
> attached. Any thoughts would be appreciated.
>
> Thanks!
> Dave
>
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