[RE-wrenches] Two Outback Radian 8048 fails in same week..what is likely wrong in 7+ year inverters?

[William Miller]

Scott:

My most recent Radian failure was a power module. You can isolate these
easily with the settings. Outback sent me a bad replacement module twice so
be cautious about your conclusions after a replacement.

Is your firmware up to date on all gear?

Have you done a reset to factory defaults on all gear?

I have also had control boards fail but not recently.

I had one system that was acting wonky and the solution was to swap which
unit was primary. Don’t know why this mattered but it fixed the problem.

Have you tried thumping each unit on the side with the heal of your palm?
I’m half serious:  the transfer relays can stick. More accurately: gently
tap the relays. There is an error code for a stuck transfer relay so you
should know if that is the problem.

Hope this helps.

William Miller
Miller Solar.com
805-438-5600
www.millersolar.com


On Sun, Jun 9, 2024 at 3:50 PM Scot Arey via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Longtime Outback user but since the experience of this group is so varied,
> I’ll say 8-years (so you real old-timers don’t laugh!).
>
>
>
> Here is the scenario of two systems:
>
>
>
> First is a full off-grid customer and we have two stacked 8048s, with four
> FM80s and a 14kw array that charges a RE2200. After a home fire (not
> related to the solar!) we got the system back on and it required heavy dual
> inverter operations to get the home going after a four-month hiatus. Looks
> like that slave inverter stopped working at end of the day after we
> re-powered and departed. He can operate with the single 8048.
>
> The second situation is a used 8048 I have at the Texas coast that powers
> a small duck/hunt bunkhouse. It was used system (and I’m a benefitting
> member) but worked just fine when I put in. Went down to check the
> batteries (FLA, as AGM nor lithium was in budget) and there was not
> inverter output and no indication on the MATE like an error code.
>
> S*o my question is – what typically fails in a 8048 from old age or heat
> stress?* Wanted to ask here since so many issues with Outback tech spt
> during its transition. Neither inverter is in warranty, but trying to field
> repair anything I might be able to.
>
> I do have battery voltage past the two 175A disconnects in the GSLC. No
> “thump” I typically get when the inverter first gets battery power and no
> lights.
>
> Any troubleshooting tips to identify the culprit part?
>
>
>
>
>
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