question

magicmike avatar image
magicmike asked

ALWAYS USE FUSES ON YOUR SYSTEM >> ALWAYS<< BURNED MPPTS.

EDIT:


Sorry for long delay.

The MPPT's due bad / wrong connections went on fire.

First of all one of MPPT's were over loaded and once one of MPPT's goes on fire then 2nd got power of all panels ( !! 15 PANELS OF 250W !! )

Person who connected all panels and system did not put fuses and all on system as well.

PANELS WERE CONNECTED PARALEL + SERIES / MIXED SERIES.

System was just ticking bomb!

It was my plan to 'fix' connections across current system and make new lines but i got new wires and fuses two days after MPPT's broke. (i was waiting for supply few weeks)

img-20210923-231535.jpg


Inverter is fine.

MPPT'S WERE OVER LOADED FOR OVER 2 YEARS.


Now i have made 5 new strings, 3 panels per string, Ordered 3 MPPT's 150/35 to get it sorted as should be.
Huge thanks to

EcoSolar (Also Repair Centre) from POLAND for quick response and getting me sorted with CORRECT HARDWARE.




EasySolar All-in-One
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marekp avatar image marekp commented ·
If your battery is fully charged (float state) and there is no load, MPPT will not charge the battery and you will not see any production from PV.
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magicmike avatar image magicmike marekp commented ·
all lights on my mppt are gone.

no bulk, absorbtion and float.

ehhh


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marekp avatar image marekp magicmike commented ·
Did you try to connect to this MPPT 250/70 over Bluetooth?
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magicmike avatar image magicmike marekp commented ·

No there is no bluetooth,

its 150/35 (x2) (old)

Ive tried to change SoC settings,

3 lights were on and all disapear. I've new software updated and preconfigured, charger is enabled.

Fuses are ok, voltage on batteries are fine.


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magicmike avatar image magicmike magicmike commented ·


There is two mppts. One per side.

Im worried that mppts are fired some how, but i only changed SoC settings...

img-20210923-203346.jpg


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marekp avatar image marekp magicmike commented ·
Do you have VRM set-up?
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magicmike avatar image magicmike marekp commented ·

i dont, i dont have lan connection only wifi,


screenshot-2021-09-23-205524.jpg

screenshot-2021-09-23-205616.jpg


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screenshot-2021-09-23-205524.jpg (115.4 KiB)
marekp avatar image marekp magicmike commented ·
Do you have a way to see the status of your system, other than those LEDs?
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magicmike avatar image magicmike marekp commented ·

Im at front of it right now, if that woul be any help :S

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marekp avatar image marekp magicmike commented ·

I asked, whether you can see the status of your system, OTHER THAN by looking at the LEDs.

Can you see what the remote console tells about components of your system.

Something like this:

screen-shot-2021-09-23-at-102115-pm.png

screen-shot-2021-09-23-at-102149-pm.png

screen-shot-2021-09-23-at-102527-pm.png

screen-shot-2021-09-23-at-102551-pm.png

screen-shot-2021-09-23-at-102700-pm.png


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screen-shot-2021-09-23-at-102149-pm.png (18.5 KiB)
magicmike avatar image magicmike marekp commented ·
Looks like i dont,

i have only bmv and mk3 to usb on old system


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marekp avatar image marekp magicmike commented ·

Why you did not connect the Cerbo yet?

When you connect it, you will get all the info you need to troubleshoot this problem.


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1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

Can you make some pictures of the whole system?
Can you measure the battery voltage at the battery terminals and the PV voltage at the PV terminals of the MPPTs?

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magicmike avatar image magicmike commented ·

Hi,

Sorry for long delay.

The MPPT's due bad / wrong connections went on fire.

First of all one of MPPT's were over loaded and once one of MPPT's goes on fire then 2nd got power of all panels ( !! 15 PANELS OF 250W !! )

Person who connected all panels and system did not put fuses and all on system as well.

PANELS WERE CONNECTED PARALEL + SERIES / MIXED SERIES.

System was just ticking bomb!

It was my plan to 'fix' connections across current system and make new lines but i got new wires and fuses two days after MPPT's broke. (i was waiting for supply few weeks)

img-20210923-231535.jpg


Inverter is fine.

I have ordered 3 New MPPT's and got wiring sorted last week.


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