Hi everyone - thanks in advance for any insight anyone can offer. This issue has me baffled.
System: 24 x 305w w/ Enphase m250 microinverters; grid tied; installed in Jan 2015
My system has been working fine for over two and half years. Three days ago the system-wide Enphase production graph start showing some very weird behavior. Instead of the smooth power production curve I'm normally used to seeing on sunny days, I start seeing a "step ladder" effect. i.e. AC current going up, then down slightly, then up again as the day progresses.
Coincidentally (or not), around the same time one of my panels starts going offline around 11 AM and stays dark for the remainder of the day. The next day (and every day since) the panel starts producing normally (except for the aforementioned step ladder issue), then again goes offline around the same time.
Graphs
Broken panel or inverter? I'm highlighting the moment production goes to zero for this one panel....usually around 11 AM each day.
System-wide production. This is normally a smooth curve on sunny days. Instead, production goes up, then down slightly, then up again. All panels exhibit this behavior.
Clearly something needs to be fixed, but I'd love to do as much troubleshooting from the comfort of my home office before I crawl up on my 120* roof (I'm in NC).
Thanks!
System: 24 x 305w w/ Enphase m250 microinverters; grid tied; installed in Jan 2015
My system has been working fine for over two and half years. Three days ago the system-wide Enphase production graph start showing some very weird behavior. Instead of the smooth power production curve I'm normally used to seeing on sunny days, I start seeing a "step ladder" effect. i.e. AC current going up, then down slightly, then up again as the day progresses.
Coincidentally (or not), around the same time one of my panels starts going offline around 11 AM and stays dark for the remainder of the day. The next day (and every day since) the panel starts producing normally (except for the aforementioned step ladder issue), then again goes offline around the same time.
Graphs
Broken panel or inverter? I'm highlighting the moment production goes to zero for this one panel....usually around 11 AM each day.
System-wide production. This is normally a smooth curve on sunny days. Instead, production goes up, then down slightly, then up again. All panels exhibit this behavior.
Clearly something needs to be fixed, but I'd love to do as much troubleshooting from the comfort of my home office before I crawl up on my 120* roof (I'm in NC).
Thanks!
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