question

gbradleyviper avatar image
gbradleyviper asked

MPPT SmartSolar Firmware v3.15 Bulk-Float Issue

24v system. (12) 330 WATT panels. (12) 370 WATT panels. (2) SmartSolar MPPT 150/70. (2) SmartSolar MPPT VE.Can 150/100. (8) Rolls S6 L16-HC 445 AH. (2) strings of 4 in parallel.

I have not had this problem until upgrading to v3.15 a few days ago. The 4 chargers start in bulk, go into absorption and then go into float. Once in float, if a cloud comes by or there is too much of a load to cause the chargers to go into bulk, randomly one of the charge controllers will stay stuck in float while the others are in bulk. With the one random charger stuck in float, it does not provide any current to get the system back to float. Therefore only 3 chargers are providing current to get the system back to float. I have to shut the random charge controller off. Turn it back on and then it will sense that it needs to be in bulk and will do so helping the other 3 chargers get the system back into float.

I have turned off all chargers at the same time and let them sit off for 1 minute off. No difference.

Once again, I have never had this problem with earlier versions of the firmware. I am retired and I constantly monitor the system.

Is there a way to go back to the last firmware?

Thank you for your response and time.

Guy Bradley

firmware update
10 comments
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Thiemo van Engelen (Victron Energy staff) avatar image Thiemo van Engelen (Victron Energy staff) ♦ commented ·

Hi @gbradleyviper

Do you have the MPPTs also connected to a Venus system?

And do you also have VE.Smart Networking enabled on the SmartSolars? Or do you perhaps have the VE.Can chargers connected via de CAN bus?

With kind regards,

Thiemo van Engelen

0 Likes 0 ·
gbradleyviper avatar image gbradleyviper Thiemo van Engelen (Victron Energy staff) ♦ commented ·
Hello.


The MPPT's are not connected to a Venus system. VE.Smart Networking is enabled on all SmartSolars. The VE.Can chargers are not connected via CAN bus.


Thank you,

Guy Bradley

0 Likes 0 ·
Thiemo van Engelen (Victron Energy staff) avatar image Thiemo van Engelen (Victron Energy staff) ♦ gbradleyviper commented ·

Hi @gbradleyviper

Can you connect to each charger and check for each in the VE.Smart networking menu that it sees the other 3 MPPTs? When they are connected via a VE.Smart network, they should all switch charge state more or less at the same time but if 1 charger does not see all other chargers, this might not work properly.

Kind regards,

Thiemo van Engelen

0 Likes 0 ·
gbradleyviper avatar image gbradleyviper Thiemo van Engelen (Victron Energy staff) ♦ commented ·
Hi Thiemo,


Each charger could see the other chargers. I went into all 4 MPPT's and left the network and then reestablished the network. Give me a couple of days to see if this fixed the issue.


Thank you,

Guy Bradley

0 Likes 0 ·
gbradleyviper avatar image gbradleyviper Thiemo van Engelen (Victron Energy staff) ♦ commented ·

Hello Thiemo,

I think the problem has been fixed by disconnecting each MPPT from the network and then reconnecting. I think it was one of the VE.Can 150/100. I track how this system does on a daily basis using Microsoft Excel. Since the firmware update, the VE.Can 150/100 had different absorption and float values from the other 3 MPPT's. Even though the VE.Can 150/100 showed it was communicating with the other MPPT's I guess something happened to it's communications with the other MPPT's during the firmware update or it was just a coincidence at the same time.

If the problem magically comes back in the days ahead I will send you an email. Otherwise, if all goes well, consider the issue is fixed.

Thank you for your help. I am glad I do not have to go back to the previous firmware version.

Have a nice day,

Guy Bradley

0 Likes 0 ·
gbradleyviper avatar image gbradleyviper Thiemo van Engelen (Victron Energy staff) ♦ commented ·

Hi Thiemo,

I was wrong. The system just went into Float. This time the other SmartSolar MPPT VE.Can 150/100 stayed in Absorption. I connected to it, I made it leave the network. Then I made it join the network and it went into Float. Reminder, I have never had this problem until the last firmware update. At least I did not have to cycle the power on the MPPT. Leaving and joining the network is better. FYI, all four of the MPPT's are 50 millimeters away from the next. All reside in the same closet.

Any help would be appreciated.

Thank you,

Guy Bradley

0 Likes 0 ·
gbradleyviper avatar image gbradleyviper Thiemo van Engelen (Victron Energy staff) ♦ commented ·
Hello Thiemo,


I failed to mention. Before I upgraded the firmware on all four charge controllers, I upgraded the Bluetooth firmware to v2.49. Once I upgraded the Bluetooth firmware all the charge controllers then said that there was a firmware upgrade for each charge controller. Then I upgraded all the charge controllers firmware.

Being that this seems like a network issue, maybe it is not the charge controller firmware but the Bluetooth firmware that is causing the problem?

Just a thought.

Thanks again for your time,

Guy Bradley

0 Likes 0 ·
Thiemo van Engelen (Victron Energy staff) avatar image Thiemo van Engelen (Victron Energy staff) ♦ gbradleyviper commented ·

Hi @gbradleyviper

Thank you for mentioning this. It could indeed be a networking issue and related to the dongle. It could also still be related to the MPPT or a combination of both as they are working closely together in case of VE.Smart networking.

In any case, we will look into this issue.

Kind regards,

Thiemo van Engelen

0 Likes 0 ·
Thiemo van Engelen (Victron Energy staff) avatar image Thiemo van Engelen (Victron Energy staff) ♦ gbradleyviper commented ·

Hi @gbradleyviper

Can you perhaps remember what version were running on the internal dongle and the MPPT before you upgraded them?

Kind regards,

Thiemo van Engelen

0 Likes 0 ·
gbradleyviper avatar image gbradleyviper Thiemo van Engelen (Victron Energy staff) ♦ commented ·
Hi Thiemo,

I don't know what you mean by the internal dongle. The MPPT's don't have a dongle that I know of. I think the last version was 3.14 for the firmware? I don't remember the last version of the Bluetooth firmware.

I am currently experimenting with the four MPPT's. On April 29 once the MPPT's turned on, I went into one of the can MPPT and left the network and then rejoined. It did not have the problem that day. On April 30, the other can MPPT exhibited the problem. This morning when the MPPT's turn on I will leave the network and rejoin for both can MPPT's. It may move to one of the non MPPT's now and if so then I will have to do this every morning to all four MPPT's so they function properly.

I will let you know how it goes in a couple of days.

Thanks for your help,

Guy Bradley

0 Likes 0 ·
2 Answers
dmsims avatar image
dmsims answered ·

You have to create an account to access:

https://professional.victronenergy.com/downloads/firmware/

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

gbradleyviper avatar image
gbradleyviper answered ·

Hi. I created an account and downloaded the two .xup files. How do I import them into the charge controllers? In doing research, people say Android does not work. Thank you.

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.