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MPP Solar 3 phase issue
#1
My system is up and running for almost 1.5 years.
It’s a 3 x PIP5048MG to get a final 3 phase system.
Each inverter is connected to a single PV string of 2700W (9 panels) each.
In the last few days I am facing a strange issue.
One inverter goes randomly in protection (with no advices or messages) and give me tension with no power (no watt) so one phase is no usable.
Already tried disconnecting the PV of that inverter without any results.
Still don’t understand what can force the inverter stopping producing energy.
Any clues?
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#2
What error code?
NOTE! My links supplied in this message may be affiliated with Ebay and by clicking on them you agree on the terms.
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
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#3
Hi Daniel, thanks for helping me.
No error code from the inverter.
Just no power out (but still 230v).
As result I loose that phase
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#4
So no error code and the display say it outputs power? If that's the case check the fuses/breakers on the output. If they are in warranty (1year) you check with the dealer.

I have not seen any MPP product stop doing stuff without error codes.
NOTE! My links supplied in this message may be affiliated with Ebay and by clicking on them you agree on the terms.
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
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#5
(08-05-2020, 11:36 AM)daromer Wrote: So no error code and the display say it outputs power?  If that's the case check the fuses/breakers on the output. If they are in warranty (1year) you check with the dealer.

I have not seen any MPP product stop doing stuff without error codes.
Plan to run watchpower and see if shows any error code.
Nothing on display and inverter still deliver tension but no wattage.
Would like to swap the parallel cards to detect any issue and (at the end) want to run the inverter alone (no parallel card connections) to isolate the issue.
will post the follow up
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#6
Post an image from the screen please.
NOTE! My links supplied in this message may be affiliated with Ebay and by clicking on them you agree on the terms.
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
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#7
Update
Just completed the swapping parallel card and issue is still there.
Inverter worked fine for around 3 hours than stopped again with no message on display nor on watch power.
To let the inverter work again I have to restart it.
Only clue I have I heard some sparkling sound from the system but I can be sure that come from that inverter.
By now I am pointing to the main board (AC production section)
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#8
UPDATE
I discovered that I have tension between neutral and ground when operating off grid from the 3 inverters, so maybe the inverter blocks itself because of that voltage.
Question is.
It makes sense to connect ground and neutral on the AC output?
I am ALWAYS in battery mode and OFF GRID.
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