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I read these with interest. So much bashing of solaredge. But, I have had a few issues, and lots of questions. SE technical support has been nothing but amazing! Always call back within an hour or two. Every issue has been dealing with in real time. Sure glad I did not go with a tesla inverter8 days and still nothing from Tesla. I hope to hear from them soon.
I read these with interest. So much bashing of solaredge. But, I have had a few issues, and lots of questions. SE technical support has been nothing but amazing! Always call back within an hour or two. Every issue has been dealing with in real time. Sure glad I did not go with a tesla inverter
Or other invertersCongratulations? Not sure what that adds to the conversation... No one here is talking about a Tesla inverter.
Thank you for your email. The process typically only takes a few days though I think, in this case, they are being more thorough to make sure all the proper steps have been and are being taken.
According to the most recent notes, they have updated the firmware on the inverter, and will continue to monitor the inverter's performance to help determine how much of the production is due to actual inverter issues versus Colorado weather patterns. The Systems Diagnostic team will continue to monitor and reassess the week of 04/19 to determine the next steps. I will follow up with you at that time.
On perfectly clear blue-sky no shadow days our solar roof Delta M8 inverter persistently faults with "Inverter Over Current(HW)" messages in the history log of the M Professional App, the same app the Tesla installer used to comm with the inverter at final inspection.
This leads to the very spikey no power/ max power graphs depicted in many other threads, the inverter sounds like a drum machine as it faults then resets every 60-90 seconds, household lights persistently flickering or pulsing, inverter circuitry resonating in a pulsing fashion, and suboptimal system energy production since it's in persistent oscillation between no or max power for a good portion of the day.
System = 9.4kW peak capable solar roof separated into 3 strings, Delta M8 single phase inverter. PTO 01FEB2021.
Tesla first line support offered no answers, other than to "escalate" by scheduling an onsite service call 1 month from today. Gee thanks.
So i called Delta directly. They asked for the historical maximum current recorded for each of the 3 strings. In our case 12.5A for each, and peaking at that often 10:00-14:00 for several days this month as the sun rides higher in the sky.
The Delta8 spec sheet clearly specifies "Maximum input current (per MPPT) - 12A". So Delta concluded this is a system design issue such that each string is frequently supplying current over the inverter max spec per string.
Anyone else having similar issues? Would you agree the system design likely undersized the inverter?
Fine? How so?
Fine? How so?
i did. you oversimplify and clearly didn't read our situation. oh well ... here goes more flippant sound bites from "experts".I can rehash it again or you can read the thread I linked to
i did. you oversimplify and clearly didn't read our situation. oh well ... here goes more flippant sound bites from "experts".
On perfectly clear blue-sky no shadow days our solar roof Delta M8 inverter persistently faults with "Inverter Over Current(HW)" messages in the history log of the M Professional App, the same app the Tesla installer used to comm with the inverter at final inspection.
This leads to the very spikey no power/ max power graphs depicted in many other threads, the inverter sounds like a drum machine as it faults then resets every 60-90 seconds, household lights persistently flickering or pulsing, inverter circuitry resonating in a pulsing fashion, and suboptimal system energy production since it's in persistent oscillation between no or max power for a good portion of the day.
System = 9.4kW peak capable solar roof separated into 3 strings, Delta M8 single phase inverter. PTO 01FEB2021.
Tesla first line support offered no answers, other than to "escalate" by scheduling an onsite service call 1 month from today. Gee thanks.
So i called Delta directly. They asked for the historical maximum current recorded for each of the 3 strings. In our case 12.5A for each, and peaking at that often 10:00-14:00 for several days this month as the sun rides higher in the sky.
The Delta8 spec sheet clearly specifies "Maximum input current (per MPPT) - 12A". So Delta concluded this is a system design issue such that each string is frequently supplying current over the inverter max spec per string.
Anyone else having similar issues? Would you agree the system design likely undersized the inverter?
ok. so you have a system designed by Tesla/Solar City where 3 PV strings output greater than 12A per string persistently for up to 4hrs recently (to be precise 12.5A), and an 8kW inverter that accepts no more than 12A per input string and persitently faults and resets in an oscillatory fashion when >12A (as designed for safety purposes), and very little power gets produced. Hmmm ... please enlighten me further thanks.You have a problem but an undersized inverter isn't it. Solar arrays don't 'push' power into the inverter, the inverter harvests the energy. If 20A is available on a MPP channel but the inverter can only take 12.5A it's only going to take 12.5A.
ok. so you have a system designed by Tesla/Solar City where 3 PV strings output greater than 12A per string persistently for up to 4hrs recently (to be precise 12.5A), and an 8kW inverter that accepts no more than 12A per input string and persitently faults and resets in an oscillatory fashion when >12A (as designed for safety purposes), and very little power gets produced. Hmmm ... please enlighten me further thanks.