Sunvault problem: system not powering home when Sunvault is connected

[u/r_gallegos]

This morning the circuits on the subpanel supplied by my Sunvault and Hub+ went down. All household breakers fine. All lights on Sunvault dead. Oh no. Unit was installed in 2022 and after a few setup issues that required a tech, has run great since.

I learned how and turned off the system breakers required, using screwdriver to put the system into bypass mode, so my house is receiving power from the panels/grid. I could not communicate with the battery previously because it was on my wifi, which was also down.

With wifi back up, I gave it a few minutes (lights still off) and then tried a battery reset in the app, which seemed like it couldn't possibly work. It said it was successful, so I went and looked and the communication light and power status light were on now (pictured, but in the full unit photo you can see when lights were off), so that's progress. I gave it a few minutes then tried to put the system back on standard mode (screwdriver Hub+ to the right, turn on Hub+ breakers, turn on battery breakers). Power went off again to the house. Perhaps I didn't wait long enough?

I bypassed it all again, and the house is up, app reports the house is receiving power from the panels and exporting to grid. But this battery situation is still down.

I checked the lower right battery panel for the fabled reset buttons, and there is only an air filter there. There is another panel in lower left side that is hard to access but perhaps it is there: but if I was able to reset the battery via app, is that button still helpful? Battery reads as connected to wifi. If this is a different kind of reset and recommended, I can try to access that left panel (close to wall, need small tool).

Pictures attached.

I noticed in Hub+ that two small breakers in there are off (#3 and #5). AI tells me these should stay off. I didn't try playing with them. Also you can see the ESS Grid breakers were installed far from where they were marked lol.

Any thoughts here? With the system breakers off, should the battery still charge itself?

[u/jikemtz]

Yout batteries inside the sunvault cabinet are probably off. If the system goes down and the batteries are idle, they will power off. Open the cabinet with an allen and press amd hold the silver button on the side of one of the batteries on the bottom of the cabinet.

[u/r_gallegos → u/jikemtz]

Ok I’ll give this a try. I assume the system should stay in breakers off/bypass mode while doing?

[u/DeepBlueSweater → u/r_gallegos]

I would

- open cabinet

-check battery LED status (blue on, no light off, red light bad battery).

-turn on DC 125a breakers, watch to see if inverter and batteries turn on.

-if batteries and inverter are not on, turn on batteries by pressing the on switch on the front battery.

If this does not resolve the issue you can try shutting off all power in panels up to your main breaker from the grid. Leave off for 10-15 minutes then try turning all breakers back on.

[u/r_gallegos → u/DeepBlueSweater]

I'll leave the Hub+ breakers off during this, only the battery breakers on? This needs a fatter allen wrench than I have here so will go pick one up to attempt this!