I'll be adding 16kW on my flex boss in the next week or so and will upgrade wiring to backfeed more than 12kW. Will see what my results are.
FlexBoss21 / GridBoss Issue List
- Thread starter skimandan
- Start date
EG4TechSolutionsTeam
Online Support for EG4 Electronics
- Click on Reset on the "All to Default" to clear the system.
- Set the following back on the inverter.
skimandan
New guy
I updated to latest firmware and reset all settings to default, then set all settings to match your suggestions - how mine were before resetting. Crossing fingers and waiting for the clouds to go away.
skimandan
New guy
So far no AC output to grid. Cloudy weather made my testing a little uneventful, but there are times today my PV appeared to match my load without exporting any AC to Grid. I currently have Force Discharge set to 12kW to test the system but no luck.
Anyone else out there in internet land have more success with AC Export to Grid? Anyone?
Anyone else out there in internet land have more success with AC Export to Grid? Anyone?
obsoletion
FAFO
I not having issues exporting to grid. I am sending PV to grid after batteries are full and forced discharge during my high TOU hours
skimandan
New guy
What’s the highest ac output to grid you’ve experienced?
obsoletion
FAFO
Just over 32kw. I have 3 flexbosses. That was solar plus forced discharge.
CaySol
Solar apprentice
Can you try to go for the 48kw?
RARankin
Solar Noob
Had a windy storm roll through last night which made the grid power go on and off a few times. Gridboss A had zero issues. Gridboss B just let the power go off and did nothing - no power backup. They’re configured the same as far as I can tell.
I tested this morning by killing the grid to B and it behaved the same way. Completely power cycling the inverter and the GB and it started to behave as expected again.
Not sure if it was left in a bad state after the firmware update or what.
Disappointed.
I tested this morning by killing the grid to B and it behaved the same way. Completely power cycling the inverter and the GB and it started to behave as expected again.
Not sure if it was left in a bad state after the firmware update or what.
Disappointed.
obsoletion
FAFO
I had issues too after the firmware upgrade that were only resolved by completely powering down everything. SS tech told me that normally no reboot is needed after the firmware update but for this latest update they are discovering that is not the case. It seems they don’t thoroughly test these updates before pushing them out as many people are having these issues.
skimandan
New guy
This is the best advice anyone has given me on this forum!
Seriously!
I finally broke the 12kW barrier!
FYI @Will Prowse @EG4TechSolutionsTeam
Holy cow! Ok good to know
42OhmsPA
Who likes Electrical Gremlins?
Lol at the battery voltage sag. How many packs do you have again?
skimandan
New guy
No need to be a
.2 X EG4 Indoor Wallmount. Let's be happy for small wins and if my voltage sag is actually a problem I'll send you (and EG4) a note.
CaySol
Solar apprentice
Looks like 2. That is weird though. I have done over 42kw with my 3 in parallel and the voltage didn’t drop like this.
No Pv so this was surge.
Attachments
42OhmsPA
Who likes Electrical Gremlins?
Wasn't intending to be a shit head at all. It was a good lol. I smile and laugh when I similar results on my system.... Something satisfying about seeing that much power flowing from something you put together...No need to be a
2 X EG4 Indoor Wallmount. Let's be happy for small wins and if my voltage sag is actually a problem I'll send you (and EG4) a note.
The only time it could become a problem is if it dips low enough to hit a low battery setpoint somewhere.
Looking forward to seeing higher output to the grid when you have better solar conditions. My quick math says your losing ~1800W to inefficiencies, I'm curious if that changes when the output increases from PV.
Do you have 2x 2/0 gauge cables supplying the flex boss or only 1 pair?No need to be a
2 X EG4 Indoor Wallmount. Let's be happy for small wins and if my voltage sag is actually a problem I'll send you (and EG4) a note.
skimandan
New guy
No worries!
The monitor tool rarely maths so I doubt the conversion losses are so bad. I’d guess it’s a timing issue between the flexboss21 reporting DC watts and the Gridboss reporting AC watts. The charts in the data section seem to be more realistic.
skimandan
New guy
2 pairs 2/0 supplied with the battery from master battery to Flexboss21.
Tommytwotone
New Member
My system would not go into Grid Sell and it took a reboot of the new firmware for Grid Sell to enable.
The system is now selling to Grid vs charging when the batteries are in the 24% range. I disabled sell to grid but even after that change, and it took, it was pushing 5540 to grid earlier with batteries at 27%, and only pushing 9088 to batteries. Now I am wondering if the new firmware is not allowing the change to disable selling to grid to take effect.
Thank you for reminding me of the reboot. Now I am thinking.....
skimandan
New guy
Which "working mode" are you in?
Do you ever see more than 9kW of battery charge?
I am always in either "Force Charge" or "Force Discharge" and they work according to the KW setting and timers. I never charge from PV, I just let that go to loads or Grid and its working as expected.
Tommytwotone
New Member
Self consumption mode as we only get generation credit.
Yes we have seen 12kw per inverter so 24kw total when PV is good.
We have 2 inverters with 41kw of panels
The issue after we got it to sell back is that it seems to push half to grid and half to batteries which is not how it is set in the settings.
So I will try a reboot tomorrow to test if it will take the command to go to no sell back.
If that works it would show the new firmware is not allowing at least some to switch without a reboot.
The EG4 is going to have me downgrade to the previous firmware to see if that works. As my inverters had issues on the old firmware, we never sold back as we just got PTO on grid after the new firmware, I hope they can fix the new firmware as the old just shut off here and there.
Do you have v1 or v2 equipment?
Attachments
skimandan
New guy
Hopefully reboot fixes all. I was able to power down and up without outage on the Flexboss21 by doing it during AC Charge mode . When I tried it during self consumption it took the Gridboss a few seconds to switchover to AC and my reset my electronics.
It looks like your system works the way you want after 11am on that chart. It must be nice to have a sunny day!
Have you tried PV Charge Priority mode? I haven't experimented with it but the English words seem to describe what you want. It doesn't mean that is what it will do.
I have v2 of the Gridboss, maybe v1 of the Flexboss21 not sure.
Tommytwotone
New Member
The sudden jump in charge was due to a set change at that time by enabling PV charge priority.Hopefully reboot fixes all. I was able to power down and up without outage on the Flexboss21 by doing it during AC Charge mode . When I tried it during self consumption it took the Gridboss a few seconds to switchover to AC and my reset my electronics.
It looks like your system works the way you want after 11am on that chart. It must be nice to have a sunny day!
Have you tried PV Charge Priority mode? I haven't experimented with it but the English words seem to describe what you want. It doesn't mean that is what it will do.
I have v2 of the Gridboss, maybe v1 of the Flexboss21 not sure.
PV Charge Priority will charge the batteries before covering loads vs covering loads and then charging which is what I want.
With the latest firmware in place I tried switching to no sell back with the output set to 0kw. That change did not work until after I soft reset the units the same as trying to turn it on only worked after a soft reset. Mileage may vary I am not saying that will impact everyone.
We were pushing to grid prior to the soft reset and after it is only using a few watts (they think my system is reading idle consumption by the GB and Inverters in an odd way and it is showing as grid push or pull).
So today they downgraded my FB firmware to the previous firmware on the GB.
At this point we have the old problem, it will push to grid when it should be sending that power to the batteries. Plus we have the problem you were experiencing as it will not push over 24kw to grid and is lowering the PV input on the Master PV 1 and 2.
Well we are figuring out ways not to make light bulbs one bulb at a time. Knowing the experience you had with the previous firmware has been invaluable.
Does anybody get the slow flashing green indication? The manual does not say what that is.
My recently installed FB21 does this at night with no PV with grid. It has no LOAD loads presently, and it seems to pull nothing from the grid but uses the battery for its self power.
The slow flashing green seems to be "I don't like the grid, so I won't be using it". Yet, during the day with ample PV, it generates power and exports to the grid as configured.
I am using the battery backup mode since we have full net metering, so no need to run the batteries down at night. This is FB21 plus two wall mount 280 AH batteries.
Tonight, it is periodically using the grid to charge the batteries, but then stops.
Here is the grid current over a span of about 30 minutes, peak about 300 watts which seems to be battery charging, then it quite, draws from battery, then goes back to charging from grid.
That's just weird. In some cases, there is relay clicking going on in step with the above changes.
I am running FAAB 2021 version. Maybe I need to reboot a few times?
Hopefully someone has some insight, this is starting to be annoying and the manual is very poor at explaining what the settings do precisely.
Mike C.
My recently installed FB21 does this at night with no PV with grid. It has no LOAD loads presently, and it seems to pull nothing from the grid but uses the battery for its self power.
The slow flashing green seems to be "I don't like the grid, so I won't be using it". Yet, during the day with ample PV, it generates power and exports to the grid as configured.
I am using the battery backup mode since we have full net metering, so no need to run the batteries down at night. This is FB21 plus two wall mount 280 AH batteries.
Tonight, it is periodically using the grid to charge the batteries, but then stops.
Here is the grid current over a span of about 30 minutes, peak about 300 watts which seems to be battery charging, then it quite, draws from battery, then goes back to charging from grid.
That's just weird. In some cases, there is relay clicking going on in step with the above changes.
I am running FAAB 2021 version. Maybe I need to reboot a few times?
Hopefully someone has some insight, this is starting to be annoying and the manual is very poor at explaining what the settings do precisely.
Mike C.
Similar threads
