Hello everyone.

I have a Pylontech UP5000  coonected to a Kodak VM III (OG5.48) which when connected with a comms cable goes  to low battery alarm mode even if the eveter is displaying voltage above 52V and the BMS soc lights are showing that the battery is full or almost full. The inverter fimware version is  V41.17.7z. what could possibly be the problem.

 

18 hours ago, Wanda said:

Hello everyone.

I have a Pylontech UP5000  coonected to a Kodak VM III (OG5.48) which when connected with a comms cable goes  to low battery alarm mode even if the eveter is displaying voltage above 52V and the BMS soc lights are showing that the battery is full or almost full. The inverter fimware version is  V41.17.7z. what could possibly be the problem.

 

Knowing that the battery is at 52V what happens if you disconnect the comms cable?

What are the various voltage levels set at on the inverter?

On 2022/04/10 at 11:41 AM, Scorp007 said:

Knowing that the battery is at 52V what happens if you disconnect the comms cable?

What are the various voltage levels set at on the inverter?

I have the battery type setting on "Pylon" which is a custom setting for Pylontech batteries. I would assume that in this set up the battery is controlled by the Pylontech  BMS settings and as such I'm not able to make any battery charging parameter.

If I pull off the comms cable the Inverter goes into alarm mode since it's set on Pylon which requires comms. If I change to USER DEFINED the battery works fine but I prefer comms as the battery & inverter are compatible.

On 2022/04/10 at 1:03 AM, Wanda said:

The inverter fimware version is  V41.17. 

But what is the removable display firmware version? That's what does 90% of the interaction with the battery BMS. 

6 hours ago, Coulomb said:

But what is the removable display firmware version? That's what does 90% of the interaction with the battery BMS. 

Ohh okay. I only updated the main firmware. Will try and update the display firmware and see how works.

Thank you.

Any updates on this? Im having the exact same issue on my system, 2x og-plus5.48 inverters in parallel conected to 3x up5000 batteries if i switch the inverters off by the round grey button on the inverter the alarm 04 goes away and the batteries charge as normal but as soon as i switch any one of the inverters on it immidiatly gives me error 04 low battery but on the inverters i can see the voltage is 52v and on the batteries all the lights are on showing batteries are full

Unfortunately I haven't resolved the issue. I bought a cheap USB to RS232 adapter that failed to work properly hence I couldn't do the firmware update that I gathered would possibly clear the communication error.

You could try updating both inverters to the latest firmware and do the same for Pylontech. You can get the latest firmware versions for Kodak on the Segen solar website.

 

2 minutes ago, Wanda said:

Unfortunately I haven't resolved the issue. I bought a cheap USB to RS232 adapter that failed to work properly hence I couldn't do the firmware update that I gathered would possibly clear the communication error.

You could try updating both inverters to the latest firmware and do the same for Pylontech. You can get the latest firmware versions for Kodak on the Segen solar website.

 

 

Here is the Pylontech firmware update file https://drive.google.com/drive/folders/1ObOvQsTTTNH9zS2AtbvqYoB_8fIba57M

 

Unfortunately I haven't resolved the issue. I bought a cheap USB to RS232 adapter that failed to work properly hence I couldn't do the firmware update that I gathered would possibly clear the communication error.

You could try updating both inverters to the latest firmware and do the same for Pylontech. You can get the latest firmware versions for Kodak on the Segen solar website.

 

Im having a similar issue on a og3kva but mine doesnt charge at all. Also tried updating the firmware via usb and rs232 no luck im taking it in today will come back and tell you guys what fixed it