JDAVIES94
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Basically as per the title, my loads arnt perfectly split down the middle so ideally parallel would suit me better however are there many benefits to running them separately besides transfer time? Inverters as 2 x 11kw max's
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Based on what I've witnessed over the past couple cloudy days I would consider this 95% fixed. It still sits at around 100v longer than I would say is perfect. However it does get going much quicker without missing out on too much power. I would say that over the course of the day I'm loosing no more than 2-300wh. Not sure if this fix can be translated into the 8kw model but that is beyond my scope of knowledge.
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Hello columb the older firmware 57.60 the only difference I found is that it would stick at 115v instead of 90v which it did on the original firmware it was shipped with. After looking at it for a couple days although I think it may be a little too early to tell still it does seem much improved. It stayed at 100v until midday yesterday but it was extremely dark and miserable. Besides there was only 0.5a so not a huge amount to gain. Once the sun did start to come out it shot up to around 290v and stayed there pretty much without fault for a few hours until the sun started leave my panels. See photo 1 Today, bit of odd behaviour on mppt1 regarding amps comparing it to mppt2 but I shall continue to monitor and get back, like I said a bit too early to judge. Photo 2
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After moaning that the firmware previously sent didn't fix the issue it just moved the voltage up to 115v they have now sent me another version 57.61. Please see attached. I will get back in a few days with how it responds THIS UPDATE IS FOR THE 11KW Max 1 (with removable display) ONLY. DO NOT USE ON 8KW MODEL Reflash.zip
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Right I'm just spit balling here so correct me if I'm wrong. I think that possibly looking at the "minimum voltage" and adjusting that could be the wrong way to look at fixing this. After watching this all morning I have found that it will stay at 115v-120v until exactly the point it hits 3a after this it seems to want to keep 3a or more so increases the voltage SLOWLY until it sits at 3a. This behaviour I think would be fine on newer panels with a short circuit of 10a+. But with my older panels with a short circuit of around 7a in ideal conditions could very quickly drop below 3a with indirect sunlight....I suspect. So potentially lowering the amperage at which it "releases" to something older panels can easily output shorted. Any thoughts on this? I could be way off.
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Finally got a response with the attached zip file. The initial zip suggests that they've sent 57.60 for me to flash to. Haven't tested yet as I don't want to then be locked to the modern flasher. Also not sure if this fixes the issue as of yet. Should I flash? I've removed the step by step as this took me over the 3mb limit. Reflash.zip
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Hello Coulomb, I seem to have a similar issue to everyone else in that it sticks at 90v on overcast days until switch to USB then back to SBU an then it starts tracking until some thicker clouds come over again. Please see attached photo. If possible would you be able to create a firmware with 250v MPPT 1 & 175v MPPT (6 & 9 panels in series 34.5vmp if you think another voltage would be better suited) One thing i have notice though is my firmware from factory is 57.04, this inverter was ordered from maximum solar on eBay. which was confirmed as a legitimate reseller by Peggy at MPP Solar. Regards, Jeran
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Has anyone been able to get in contact with @Manie i have been unable to get an answer via email over the past month. Also his profile has dissapeared on here which is odd. Does anyone have any idea? Regards, Jeran