Waiting Sun solved! ABB Aurora Power One Grid Tie Inverter: testing two inverters: mystery fault!
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- Опубліковано 15 лис 2023
- One of these Aurora 3.6 inverters was putting out 0v and getting warm, the other had a waiting sun warning, which I was able to solve.
ABB PVI 3.6 TL OUTD Grid Tied Inverter
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Interesting that invertors are being replaced as reaching the end of commercial life. It would be a waste for such expensive equipment to be recycled as scrap metal. It is encouraging that you have been able to fix some, giving them a second life.
Indeed, 10 years old, from a company that is defunct and so does not do warranty repairs on such an old model anyway, and at £2/relay it is a cheap fix.
Some nice rj45 sockets in there. Should get a home assistant instance and collect the data.
The only inverters that I know of that have this setting, maybe it is something to do with trying to start on a high voltage system when there is volts but no current. The inverter would start and then draw up to 20 watts from the mains, cheers
I can’t remember if I saw it on the older solis or not. Two of my abb/aurora were doing 0w all afternoon yesterday. Enough power to get them to wake up but not enough for output. I thought that the inverter should never draw from the grid?
@@bootsowen Owen, book posted, I only found out about this import because we have diverters with LCD screens, every evening as the light level is lost before our 7 grid inverters switch off the diverter shows an import of around 0.1Kw. The diverter reading is not very accurate at such low levels but I know it's definately an import because all of the house is running through the victron and so we are drawing zero mains power. Cheers
Brill sent me one ! Think you owe ian a pint or two.
Hi Owen,
Bit late now but can you pop a current clamp meter over the feeds to the faulty unit?
Sounds like power being dissipated within the unit but not hot enough I think. Perhaps power is only in motion on the DC side. Could it still be generating but not show on screen? Sounded a bit noisy for normal operation.
Something was definitely wrong with it, The current will be very similar to what I saw on the second unit, it was an overcast day and I was doing it in the morning before any sun was on the panels.
Why do you ask, maybe give it more sun?
Good for swapping units because I am turning them off and on but with very low current on the DC side. It will go in the pile for spares, I like these units, maybe some kind of beginner bias as the ABB beside it was my first inverter and chugs away without complaint! I have 4 working now, 4 waiting on a test, and that one dodgy one, so I reckon I should be good for a while.
@@bootsoweni figure the current is leaking through from +DC to -DC and not getting through to the AC side. I wonder if the faulty unit is introducing a DC offset to the mains (solar DC being passed into the AC side). All academic considering your stock of inverters!