I had all kinds of trouble with the one and only VFXR system I did last
summer. Every morning when the system would try to sell back, one
inverter would drop, which meant half the critical loads all got dropped
too. Considering the idea behind all the money for GTB is to keep those
loads up no matter what, we as an industry looked very bad. A firmware
update a couple months later finally fixed the problem, but in the mean
time I had Outback Tech support trying to blame my wiring for the problems.
I had so many call backs due to this, along with Midnite "Rapid
Shutdown" issues, that I'm very hesitant to even take on anymore backup
power systems. I actually talk most people out of it right now. If you
already have 99+% power availability, its going to be hard to improve
that. More likely, as in our case, we are decreasing the up time not
improving it, and the customer is paying tens of thousands for that down
grade.
I'm just too honest to promote GTB right now, especially with Tesla's
disinformation campaign that makes people think they can backup their
entire house for any outage for $5k. I was doing backup systems before
we were even allowed to grid tie in the 90s, so I consider our current
state of the art to be in total disarray:
shameful over promotion coupled with dangerous under performance.
R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
303 505-8760
On 5/3/17 12:51 PM, Starlight Solar Power Systems wrote:
Battery Wrenches,
We designed a mobile power system with 6 Outback VFXR3648 inverters
stacked for 240 split phase. The battery system is a 20kWh lithium
ion. So far, 2 FET boards have failed and the customer called today
with another failure. Outback said they had an early problem with
these. I want to know if anyone else is having issues with these and
is the problem really fixed before I quote another one.
Thank you,
Larry Crutcher
Starlight Solar Power Systems
(928) 342-9103
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