question

stigla avatar image
stigla asked

SmartSolar 100/20 not charging after firmware update

About 10 days ago I updated the SmartSolar 100/20 charger to version 1.63 and since then charging hasn't worked properly. For some reason, the MPPT refuses to do bulk charging. I tried manually updating to version 1.64 and downgrading to 1.61 but it didn't solve the issue (although sometimes after the update it does go into bulk charging for a minute before switching to absorption).


screenshot-2024-05-03-17-59-35-221-comvictronenerg.jpg

screenshot-2024-05-04-13-34-49-581-comvictronenerg.jpg

screenshot-2024-05-03-17-59-15-631-comjktechbms.jpg screenshot-2024-05-03-17-59-53-579-comvictronenerg.jpg


MPPT SmartSolarfirmware update
2 |3000

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

2 Answers
stigla avatar image
stigla answered ·

Thanks for the reply. It looks like it's not a firmware update, but a problem with a fuse. It was melted, but not burned. I'm not sure why that is, but replacing the fuse seems to have fixed the issue.

2 |3000

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

JohnC avatar image
JohnC answered ·

@Stigla

The difference in reported Voltage suggests a disconnect between the mppt and the battery. Maybe in the wiring or the bms has shut the gate. It's even reported as 'Not Plugged', but that might be a bms thing.

Firmware always gets the blame, but it's probably coincidental.

2 |3000

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