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Pylontech US3000C change over problems


Armand007
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Good day

I have installed a 15Kw system for home use with the following items and need urgently help with Inverter Settings...

- 3 x 5 Kva Growatt Inverters

- 36 x 390 Watt Mono (JA Solar PV's)

- 4 x Pylontech US3000C (Latest on the market - 3.55kw)

- As I understand the system is connected 6 x PV panels in Serie and Pararlelled to the Inverters.

Is there anyone that can assist me with the correct Inverter Settings for my System?

It works fine From Solar to Battery and then to Utility but as soon as the Batteries is fully charged the it does not go back to Battery use or Solar use, it seems to get stuck on Utility and I need to force the system by taking away Utility so that the Batteries can be used or Solar to be used.

I really think that it must be a wrong setting on the Inverters that is not seeing the Batteries is fully charged.

Help will be appreciated.

Kind Regards

Armand007

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Good Day Armand007.

 

I have just had a Deye 8KW inverter with a pair of US3000C batteries installed a week ago.

My batteries seem to ignore the evening load and diverts to the grid when the sun goes down.

My installer informed me today that there seems to be a software issue with the US3000C batteries and you need to have the software down graded to have this issue resolved.

Float Voltage must be 51V

Absorption Voltage must be 52V.

 

Good Luck

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Good day RaviG0012

 

We have the setting lowered as you suggested but still no change, it seems to me that the new US3000C batteries is not communicating with the inverter as it should.

 

I am busy with my installer to rectify the issue with the battery suppliers, 2 of my batteries have gone into a overcharge protection and as I understand they are busy changing the BMS board to the older US3000 board to see if this will help.

 

Thanks for your response.

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1 hour ago, RaviG0012 said:

Good Day Armand007.

 

I have just had a Deye 8KW inverter with a pair of US3000C batteries installed a week ago.

My batteries seem to ignore the evening load and diverts to the grid when the sun goes down.

My installer informed me today that there seems to be a software issue with the US3000C batteries and you need to have the software down graded to have this issue resolved.

Float Voltage must be 51V

Absorption Voltage must be 52V.

 

Good Luck

Can you share some of your setting screens on the inverter. The inverter will determine if the batteries are used or not. 

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