EG4_FAAB-2727 (Most Recent Firmware)

I’m sure a sigi infant effort was made on the improvements.

Could you find out more specifics on #7 fan logic? on the 12kpv it has been observed to go all on around 6kw.

which temp indicator is this now watching to turn on/off?

Are fans only capable of single full-speed?

It would be kind to not make us run dozens of tests to revers-engineer the fan algorithm. 

Any stats on how many folks have applied this patch?  Any feedback from the community?

For me, it appears that the fans prior to FAAB-2727, they were turning on at ~130 - 140F.

See temperature plot as fans cycle.

After FAAB-2727, they appear to now turn on at 105 - 120F.

So maybe ~ a 10F or more change.

Measurements made through Home Assistant - Temperature Internal sensor.

And Yes. the fans appear to be able to be ramped and under PWM control. The fan speed algorithm is probably based on an internal heat sink temperature and power being produced. The fan turn on seems to have two different temperatures of where they turn on, again probably based on a heat sink temperature and power produced.

I have discovered quite an improvement in the operation of the 18KPV since installing the 2727 firmware.  As background, I have Solar, the 18KPV and one EG4 280AH battery connected to a secondary load panel with input power available from the Grid.  I do not have a grid tie agreement and want to ensure Zero export. I run in self consumption mode.

Selecting Zero export did not guarantee zero export as widely reported by others.  Any time I tried Off-Grid mode, my 18KPV switched to EPS output while I had solar or battery capacity and then switched back to grid feed (showing as consumption to the yellow House icon -not sure what to call it).  Both switchovers could/would cause a power bump - basically two per day which was very annoying.  

Following the upgrade to FAAB-2727 I noticed the Off-Grid mode was now in its own section of the maintenance configuration screen (I am quite certain this moved!).  When I tried off-grid mode again (with grid access still available) the 18KPV did NOT switch to EPS mode, but fed solar/battery power to the 'House' consumption icon.  Overnight it switched to grid supplied power and then this morning it switch back to solar all without a power bump and without using EPS mode.  This is a great improvement!!!  Also, so far there has been no export 'leakage' but I will track that.  I suspect that the 18KPV would switch to EPS mode if my utility fed grid power failed, but I have not tested that yet.

Has anyone else noticed this change in how the 18KPV operates in Off-Grid mode (when grid power is available)?    

Last week I submitted a post concerning the new 2727 code and off-grid mode, but as a new subscriber I guess the moderator still has not released my post.  Since that initial posting I have discovered that what I was seeing is incorrect.  Off-grid mode is not 100% blocking export to the grid as it promises.  There may be issues with this code release. 

What are others seeing?

@solar2025 I could only find the "Off-Grid Mode" setting on the "Working Mode" tab. Did someone reach out to you since you post last month?

Is there a reason this setting is only applicable to Working Mode (and not in "Old Settings Page")?

Is there a reason this new setting is not listed in the firmware features page?

Is there a reason it is only a Daily setting (and not available on weekly Settings Page)?

Would EG4 please post documentation on best practices for this new Off-Grid Setting?

We would benefit for additional details beyond the pop-up (?) "It is for absolute zero-export, when there is an AC connection. When enabled, the battery discharges power to load first and the grid will not assist in powering loads and the batteries will not charge from AC unless 'AC charge' is enabled."

@powerup I use the "Monitor" web interface to configure.  I only found Off-Grid mode in the working mode section. I did not receive feedback from EG4 - do they respond ever?  It is hard to say if OffGrid mode is working.  The Monitor app shows that export is occurring, but I am not sure if it really is based on my grid panel energy Monitor tool.  I may try a restart with the new settings to see what happens.

Edit to post: This reply was sent May 10th, but once again "Awaiting moderation".

Some weird behavior post upgrade to EG4_FAAB-2727.  With AC Charge set to avoid daytime peak rates (6am-9pmEST) I now get some charging during that timeframe.  I've been trying different settings, but nothing seems to get me to my desired charge between 9pm and 6am EST.  

Also AC Charge Battery Current(A) (?) is not settable, will not change from 0 to anything else. 

cc @eg4eric

Following up. Got on a call w/ Signiture Solar support.  Their new procedure for applying firmware has been updated to include a full shutdown and restart (hard).  Once we restarted the battery voltage showed as abnormally low so we are now in Lead Acid mode for a week to recalibrate batteries.

cc @eg4eric

@solar2025 Check these settings. Also, try cc'ing @eg4Eric (or direct message him here if you can).  Also, depending on where you purchased the system (I got ours from Signiture Solar) that vendor may have support.

Posted by: @solar2025

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Last week I submitted a post concerning the new 2727 code and off-grid mode, but as a new subscriber I guess the moderator still has not released my post.  Since that initial posting I have discovered that what I was seeing is incorrect.  Off-grid mode is not 100% blocking export to the grid as it promises.  There may be issues with this code release. 

What are others seeing?

Recap & Update:

I want zero export and smoother transitions between EPS and grid supply.  After upgrading to 2727 I tried Off-grid mode again but the inverter has been doing/reporting strange things AND has been exporting small amounts.  I tried a shutdown and restarted with no improvemt.  I updated the LCD firmware and things got worse so I phoned EG4.  Michel, with my permission, reset all my settings to default (see very bottom of Monitor web interface).  [Note: Reset did not interrupt my Load output like Restart does.]  Then she slowly re-added settings i had in place.  In no time Off-Grid mode was working feeding power to my Load output though EPS.  We discussed whether some settings that i had in place were necessary.   All has been stable and I am hopeful that Off-Grid mode will work as advertised...ABSOLUTE Zero export.   I am not sure if the transitions between EPS and grid supplied power are faster - time will tell.  

I apologize for not being active for the past couple of days!

@powerup

Is there a reason this setting is only applicable to Working Mode (and not in "Old Settings Page")?

The Working mode page is the one that will be getting updated and having all the new features and settings. The old settings page will still be there for now but will not be getting updated with the new features. I recommend getting used to the working mode page. It's honestly easier to use. 

Is there a reason this new setting is not listed in the firmware features page?

We are working on getting this added to the firmware changelog. Thank you for bringing this up!

Is there a reason it is only a Daily setting (and not available on weekly Settings Page)?

I don't know why it's not available in the weekly settings page, but I can definitely pass this request along to our team!