Recent posts

#31

The Rosie / Charging Power

Last post by bigbillsd - August 09, 2026, 09:34:22 AM

I am trying to find out if there is a way to up my Rosie Charger output from ~3200 watts to its rated 6000+ watts while on my Genny.  My QD7500 provides two legs of 120v, not 240v like our shore power where I can pump 6000 watts into the batteries. 

I have been told the rosie is really 2 3500w inverter/chargers.  At least thats how its been described when I was trying to get Grid Support working from a 30amp Shore power cord.

Since I am providing 120v twice I was wondering if there is a way to power the "other" charger to double up the charging output to its rated 120a.  (26AAC) 

Ideas?   As it is now, I have to run my Genny twice as long as I would need if I was able to get its full capacity. 

-Bill
Actually on the Jersey Shore this week and really need the full batteries to keep the AC's running in this heat! (without the genny running constantly) 

#32

The "Classic" charge controller / Re: Midnite Classic 200 displa...

Last post by ClassicCrazy - August 08, 2026, 09:59:29 PM

no it is not the normal screen you would generally see on the Classic.
It might have gotten into  a debug , or modbus mode somehow.
Does that screen stick around if they repower their Classic ?
On the MNGP there should be some status screens and the menu screens for setup , none of which look like that.
If restarting the Classic doesn't get rid of it, might be time to try  a factory reset.
Larry

#33

The "Classic" charge controller / Midnite Classic 200 displaying...

Last post by Kenneth S. - August 08, 2026, 06:05:57 PM

I am helping a friend with their off-grid solar system, and they just sent me a photo of the screen of their Midnite Classic 200. I don't know what this screen means, and I can't find any reference to it in the manual. I was already suspicious that the root cause of their problem was in the classic. Is this a normal debug screen of some kind, or is this a sign there is a problem?

#34

The Rosie / Re: Solar Assistant 6/8/2026 B...

Last post by bigbillsd - August 08, 2026, 06:34:32 AM

Dave, did that new SA beta not update the date on the page?  You pic is showing November of last year?  -Bill

#35

System Design and Layout / Re: SPD at battery combiner

Last post by ClassicCrazy - August 03, 2026, 10:12:06 PM

There may be some similar questions and responses in this section on the SPD .
Not sure if you saw that forum section ?
https://midniteftp.com/forum/index.php?board=13.0
Also  info from Ryan  in this video
https://youtu.be/WDnyItjcpxk?si=RtSGYeSAn3BQ1j4j


Larry

#36

System Design and Layout / SPD at battery combiner

Last post by Mstinwell - August 03, 2026, 02:42:53 PM

Trying to understand more about SPD placement. My theoretical set up would be a Barcelona CC, battery combiner box like MNBCB 500/50, and Powerflo 5 batteries.

If the SPD is connected onto the bus in the battery combiner will this effectively clamp a surge going to all the batteries on that bus? Or does it need to be in line before the battery combiner bus? Literature for the Barcelona breaker box shows the SPD on the battery connections there at the controller. Can someone enlighten me as to why it would be best practice to have the SPD there or why it would/wouldn't work at the combiner bus?

Thanks all

#37

The "Classic" charge controller / Re: Classic150... can it fail ...

Last post by FNG - July 31, 2026, 08:14:15 AM

To answer your question, The classic is technically not isolated but it would take a double failure to pass PV through. I believe we are shipping right around 90,000 in serial # now and I have been here for all 90K of them and do not recall ever seeing this double failure

#38

General FAQ'S / Re: internal fan 200 classic

Last post by ClassicCrazy - July 25, 2026, 08:24:11 PM

also look here for some info on Classic Fans
https://www.midnitesolar.com/faqList.php?faqCat_ID=57&faqCatName=Classic%20Charge%20Controller&parent_ID=2&subCatName=Troubleshooting

#39

General FAQ'S / Re: internal fan 200 classic

Last post by ClassicCrazy - July 25, 2026, 08:17:53 PM

go to the very first forum page and search for classic fan replacement ( or something like that ). The search won't work right on any other page.
I haven't ever opened up a classic so can't give any advice but there are lots of posts about it .
https://midniteftp.com/forum/index.php

Larry

#40

General FAQ'S / internal fan 200 classic

Last post by cjlitteral - July 25, 2026, 05:18:54 PM

I have a 200 classic mounted to wall. I have had it for at least 5-6 years. the fans are buzzing and wondering how to tell if I have model with fan access in the back (without having to remove it) or if have to go through front chassis?