Hey Marco,
I hear you, we have installed many SMA-40's and we're not
at the same point as you may be but we've definitely had a fair number
of arc fault shut-downs which take a site visit to rectify. One
location had been experiencing lightening over a year and a half which
seemed to be triggering the 8206 code.
I had to go back three times to one such install. After
that I went back with my array map (before an install I make a laminated
map of the strings with home-run locations) and started inspecting
home-run connections. I was lucky and found the culprit with my first
try. Somehow I hadn't pushed the wire end which I had crimped on the
tip to far enough into the plastic connector....too cold maybe? lazy?
distracted?...not sure but there it was, my bad. I took that connector
back to the shop and sure enough it would show intermittent connection
with an ohm meter, perfect for an arc fault.
This doesn't answer your question about the fix but thought
I'd apply a little egg to my face in the hopes of saving others the same.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net
On 9/1/2019 10:42 AM, Marco Mangelsdorf wrote:
Aloha all,
My company has really been struggling with the SMA US-40 line of
inverters and incredibly disruptive to positive customer experiences
bogus arc faults.
We were told by our SMA friends that a firmware update/fix was
forthcoming in mid-August and we’ve heard nor received nothing last month.
Does anyone know anything as to where they’re at on this?
Really frustrated....
marco
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