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

[scot.arey at solarcentex.com]

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.

So 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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