Growatt output problem

[Johnsg]

I recently powered off my Growatt 6000T DVM, now I have powered it back on I am getting low Ac output voltage eg. L1, 99V, L2 99v a total of L1+L2 =198v. There is no error code. any help on fixing this problem would be greatly appreciated.
Thank you all in advance.
John

 

[timselectric]

Do you have any grid input connected?
If so, check the input voltage, as the output will match what the input is.
If not, can you temporarily connect a source to verify that it syncs to its voltage?
Also double check the settings for voltage, in case they have a glitch.

 

[Johnsg]

Do you have any grid input connected?
If so, check the input voltage, as the output will match what the input is.
If not, can you temporarily connect a source to verify that it syncs to its voltage?
Also double check the settings for voltage, in case they have a glitch.

No grid connection

 

[Quattrohead]

Check your settings, I think it can be set to 100/200v in the menu.

 

[Johnsg]

No grid connection

I connected the grid and I get the correct voltage 120 L1 , 120 L2 outputs 240 total, so the issue is from the solar/battery input that's where I am getting the low output voltage, any ideas on what is the cause and how to fix ?

 

[timselectric]

I connected the grid and I get the correct voltage 120 L1 , 120 L2 outputs 240 total, so the issue is from the solar/battery input that's where I am getting the low output voltage, any ideas on what is the cause and how to fix ?

After removing the grid, it returns to the wrong voltages?

 

[timselectric]

Have you double checked all of the settings?

 

[Johnsg]

After removing the grid, it returns to the wrong voltages?

that's correct

 

[timselectric]

If all of the settings are correct. I think that you have a faulty unit.
The voltage regulation is definitely off.
The one I have is currently buried in storage. Or I would pull it out and try to replicate your issue. I'm not sure if a firmware update could fix it or not.
I do find it odd that it was fine when you turned it off, and now this, on the next power up. I'm assuming that it was stored in a clean and dry environment.

 

[Johnsg]

If all of the settings are correct. I think that you have a faulty unit.
The voltage regulation is definitely off.
The one I have is currently buried in storage. Or I would pull it out and try to replicate your issue. I'm not sure if a firmware update could fix it or not.
I do find it odd that it was fine when you turned it off, and now this, on the next power up. I'm assuming that it was stored in a clean and dry environment.I had

 

[Johnsg]

I had powdered inverter down due to the passing of Hurricane. I'm in Barbados, which component do you think it might be?
I try to find a replacement part

 

[timselectric]

I had powdered inverter down due to the passing of Hurricane. I'm in Barbados, which component do you think it might be?
I try to find a replacement part

I really don't know. It's more than likely something on the inverter board.
Possibly failed mosfett's, or just in the controls.
I would do a visual inspection and look for burned spots or discoloration.

 

[timselectric]

Also look at the control boards.
The two small boards at the bottom, with the jacks and dip switches.

 

[Kornbread]

Curious. What is setting #8? What freq is #9 set at?