This has been a common error on M190's for us. Is the string center fed, or
fed from one end of the 17 inverter string? Where are the failed inverters
on the string in relation to the transition cable(s)? Enphase has an App
Note on voltage rise that might be relevant. They recommend center feeding
William
Double check your voltage drop on the AC branch circuits, and make sure
that you consider your wiring between inverters. Remember that voltage
drop is additive and each inverter will see a slightly lower voltage drop
which could account for the voltage over error, especially if you are
Bill:
Good question. I called Enphase back and they say it is definitely a
hardware problem. There are at least two registers that indicate AC line
voltage and in this case they disagree, with VRMS indicating zero. Enphase
has advanced diagnostics they can call up on-line, apparently.
Friends:
We have one site that is experiencing ongoing problems with errors
indicating, AC Voltage Out Of Range. This has occurred on two of 17 M190
inverters. Apparently the voltage is not really out of range, the inverter
is erroneously reporting.
I have one replacement in hand and was
not come up again.
Alan Ross
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William
Miller
Sent: Monday, November 26, 2012 1:46 PM
To: RE-wrenches
Subject: [RE-wrenches] Enphase voltage out of range errors
Hi William,
We have experienced this at one installation using 22 M-215's. There is
not yet a conclusion, but here are some things worth looking out
for.I printed out a spreadsheet of the incidents and noticed over a
one month period that they were all happening at either 8:30 am or 1
pm,
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