Ah, tech support's dreaded "blaming it on the comms." Enphase sent me down
that rabbit hole for a few hours of wasted time.
Yes, this site has terrible interference issues, but that doesn't stop the
micros from eventually getting good comms and reporting data regularly, if
not slightly delayed. It
I considered the AC voltage but it's a stable 245V or so. Enphase couldn't
see anything wrong with AC voltage on their end. I suggested a grid profile
change, but they didn't see that as a necessary diagnostic step.
On Mon, Nov 1, 2021, 6:56 PM Dave Tedeyan wrote:
> Hi Jason,
> I recently did
It's not the modules. Mission Solar 420s. I have swapped panels between
working and non-working micros to eliminate this possibility.
On Mon, Nov 1, 2021, 7:04 PM Jerry Shafer wrote:
> It may be the modules not the inverters, in the past with good comms but
> little to no production l had blown
It may be the modules not the inverters, in the past with good comms but
little to no production l had blown diode bridges, actually melted the
plastic box and exposed the straps that were connected to the jboxes. What
modules did you use? Can you view them up close
Jerry
On Mon, Nov 1, 2021, 3:31
Hi Jason,
I recently did a microinverter swap of the old D380's to 54 of the IQ7
190's. Once it was commissioned I started seeing random MI's drop out, but
not always the same ones. I am pretty sure that this was due to
overvoltage. I measured the line voltage at 255v with the system turned
off.
N
HI Jason,
I had a neighbor replace his old units under the exchange program. less than 1
month later 1 appeared to die. Tech support said without hesitation it was the
panel that died. I got called in and the unit was producing power but comm’s
were out. These were the 190’s.
More haggling
We have a site with 34 microinverters at two orientations. It's a couple of
months old. After about a month a couple of microinverters started acting
up and dropping power production for no apparent reason, then finally
started throwing Device Produced No Power issues and totally sopped
producing b
7 matches
Mail list logo
