parallel kit trouble shoot Mpp,Voltronic,Growatt

[moorsb]

Can anyone tell me what each cable does?
The DB15 is that Canbus? If so where are the termination resistors?
Twisted pair just current flow from each?

MMp says they talk RS232 yet Fault 80 is Canbus error. 2 units run fine for 1 week then faults.

Now they just run a few minutes before fault 80

Each run fine own their own

 

[LydMekk]

What are your settings in BOTH inverters?
Picture of wall please WITH the cables clearly showing.

 

[nc73]

The parallel issue has been discussed here https://diysolarforum.com/threads/mpp-solar-lvx-6048.19099/
No one has found a permanent fix yet. Is it the same model 6048?

 

[LydMekk]

He says Growatt so no 6048 I reckon ^^

 

[nc73]

He listed MPP and Growatt...

 

[timselectric]

No idea what unit they have.
This appears to just be a general discussion topic, maybe?

 

[moorsb]

The parallel issue has been discussed here https://diysolarforum.com/threads/mpp-solar-lvx-6048.19099/
No one has found a permanent fix yet. Is it the same model 6048?

I see no mention of fault 80 on lvx6048

 

[moorsb]

No idea what unit they have.
This appears to just be a general discussion topic, maybe?

I have lvx6048 but i see they use the same parallel kit

 

[moorsb]

What are your settings in BOTH inverters?
Picture of wall please WITH the cables clearly showing.

units ran for over a week no issues

 

[timselectric]

I have lvx6048 but i see they use the same parallel kit

Physically they are similar. But software is different. Codes are generated by the software. Solutions can be different for different software types.

 

[moorsb]

My issue is Mpp tech say it is rs232 yet canbus is rs485 at that point i question their knowledge about the product. I am no longer on jobsite 600 miles away. I asked for new kits sent to me as this is a new system They instead ask for firmware ver which i can not give them now

 

[moorsb]

What are your settings in BOTH inverters?
Picture of wall please WITH the cables clearly showing.

 

[moorsb]

Units are now 600 miles away. I tried to upload video I sent to Mpp here from my cell but no luck.
Offgrid system. lifepo4 280ah battery. Mpp want the firmware of both but it will be 2 weeks before I go back in which case I could have replacement cards if they stock or do they order from Voltronics?

 

[moorsb]

Mpp Solar sent me new firmware that helped with the Canbus issue. Now units run for a few days and then all go offline but still charge.
kill all power to units and restart and they work for a few days. Now error is battery voltage.
Mpp Solar published a letter saying they have a DSP chip issue. I wonder if they are still shipping new units with known issue? In single mode they both work Parallel mode is the issue