Good day all.

The system is as follow -

• 12 X Risen panels in two banks of 6 on the roof.
• Goodwe 5048ES inverter
• Revov 10kw battery pack. There is a controller unit mounted immediately above the batteries and since there is no branding, I presume that is Revov too.

Current situation is that the controller is up, it "sees" a connection to the grid (it runs in hybrid mode), it is receiving electricity from the panels and effectively the house is running on solar right now.

But the inverter cannot "see" the batteries. I have checked that the circuit breaker between the inverter and the battery pack is closed. I have visually checked all the cables. No obvious problems there. I have pressed the reset button on the battery controller. The LEDs on the controller strobe. My understanding is that if they strobe right to left then the controller is turning off. I then press again and they strobe left to right and then I get a beep and the error light comes on.

I really don't want to hassle the installer over the weekend. Is there anything more I can do get the batteries back on line?

 

OK... measuring across the connections between the battery and the management box, I get 25.3 V. I presume that's a problem.

Well, I found a setting in EZmanager to restart the batteries. I turned that on and nothing... 

 

... For about 10 minutes, and then the battery light came on, but flashing to show low SOC. I then set the system to backup and the SOC has come up quickly. 

@Bobster did you sort out your problem? remember, that batteries is 24v per unit so you need to connect the 2 batteries in series to make 48v. 

 

I didn't connect the batteries and haven't fiddled with the connections.I may have measured across one battery.

Last night the battery dropped from an indicated 92% to nothing. This morning, with the solar coming up, it shows the batteries being charged but SOC is 0%. Might the battery pack be dodgy. 

And nothing will restart it. It refuses setup changes from EZ manager - including the option to restart the battery. The battery controller will not reset.

I suspect the installers jump the battery to get it working. They usually arrive with a piece of heavy duty flex in hand.

My first preference is that they get the system stable, My second is that they tell me how to restart it so that I don't have to wait a day at least to get it up and running again. Surely the Goodwe is not so badly designed that a lay person cannot restart it?

Edited July 22, 20196 yr by Bobster
original reply was to wrong thread

@Bobster Keep us posted. It can maybe be a bad connection or something. I'm looking into to get a set of this Revov batteries for my setup. What was the price on your set? 

@Gerlach I'll check my invoice and get back to you. I've got 10kw/h of revov, and ISTR that was about 40 grand. The control box that sits atop of the batteries has no branding on it. I run out of knowledge at this point - does that come bundled with the batteries or not?

Anyway... suddenly the batteries are back.

Here's what I think happened. That "restart the batteries" option in EZ manager does work, but only when there's solar power available. The batteries restarted almost immediately the panels came up this morning. So it seems to have remembered that I made the request but executed it much later. The battery is now 100% and looking at the portal, everything seems to be working properly. 

Previous issues were because of the inverter not tracking SOC properly. That was fixed with a firmware upgrade. This latest is something different. 

Edited July 22, 20196 yr by Bobster
Revov not "revo"

3 hours ago, Bobster said:

I've got 10kw/h of revov, and ISTR that was about 40 grand. The control box that sits atop of the batteries has no branding on it. I run out of knowledge at this point - does that come bundled with the batteries or not?

Turns out it does. Revov sell a package of two batteries, BMS and cables.

16 hours ago, Bobster said:

Turns out it does. Revov sell a package of two batteries, BMS and cables.

Jip, spoken to one of there guys in cape town side yesterday to get a price. It's two batteries, both are 24v that they connect in series to make up 48v setup. They busy designing software that can connect to the BMS. In the beginning they did use a local brand BMS but now they using this one that they selling with the package.

How is the performers so far on your battery setup?   

4 hours ago, Gerlach said:

How is the performers so far on your battery setup?   

Well it seems OK to me (bar the recent loss) but I have nothing to compare it against. The only real test it's been put to was a 6 hour outage that affected half of my street (blown circuit breaker in the local substation). That started before the sun was up and ran to about 10:30. I didn't notice a thing.