RegGuheert
Well-known member
First thing this morning Enphase updated the malfunctioning inverter from firmware revision 520-00008-r01-v01.08.00 to 520-00008-r01-v01.08.01 and there was no malfunction all day. Instead, this inverter started producing GridGone events. It seems the newest version of the firmware addresses a malfunction that the previous version did not properly handle.RegGuheert said:It appears I had a fifth inverter failure in my system on Tuesday. Interestingly this inverter, located at the top left of the field array, was NOT one of the inverters reporting "Grid Gone" events daily. I had one fail last September in a similar fashion (no "Grid Gones" in advance). It seems there are at least two different failure modes for these M190 inverters.
I informed Enphase of this failure this morning. We'll see how long it takes to receive a replacement. Last time took a month.
Overall, I lost between 3 and 4 kWh due to the malfunctioning of this inverter before Enphase addressed the problem. Not too bad.
I guess I'm back down to 4 total failures and back up to 50 years MTBF.RegGuheert said:This failure brings the MTBF of the M190s in my system down to 40 years.
I'm favorably impressed at what Enphase is capable of addressing via firmware. The longer these M190s last, the later I get a replacement which likely means better quality and longer overall lifetime.