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Michael Schmidt avatar image
Michael Schmidt asked

SmartSolar MPT 150/100 not starts Charging

Hi everyone,

I have a problem with SmartSolar MPPT 150 / 100.

It is not starts Charging or starts much to late.
One MPPT 150/100 was already exchanged.
The new one has the same Behavior.

cust2.png

on the right its the replaced MPPT 150/100 left the old one (the old one started much to late, there was some hours pv voltage before he started loading)


Already checked is:

- the remote of contactor

- the mode is external control

- the Firmware is v3.02




need some help i dont know how to go on.

here two additional shots from the same unit without changing parameters.

NORMAL START AND BEHAVIOR

normal.png



LATE START (pv is long time in Voc "Voltage open circiut" without load)

late-start.png



MPPT SmartSolar
cust1.png (78.3 KiB)
cust2.png (162.4 KiB)
normal.png (156.2 KiB)
late-start.png (187.7 KiB)
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2 Answers
Michael Schmidt avatar image
Michael Schmidt answered ·

Seems that last comment of user was deleted?


here the solution for all again.


Other customer also have 3 broken SmartSolar MPPT 150/100 from different weeks.
we replaced the first broken 150/100 and the new one was also broken.

the most disappointing point is that victron staff tells nothing of this here, and maybe also deleted the posts??

in rma it was asked if the new divice is working, so i can assume the problem is known!


we have to replace the customers device now third time, and searched the fault lots of hours
thats expensive for an installer!!



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seb71 avatar image seb71 commented ·

That "other customer" deleted a similar discussion we had on his Youtube channel. There he said he had this issue and I told him that I read some posts on Victron forums about it.

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Michael Schmidt avatar image Michael Schmidt commented ·

Last Update!


the MPPT is replaced with Smartsolar 250/100 and runs perfectly from the first minute after installation.


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kalito avatar image
kalito answered ·

What do you mean by starting late in the context of what is connected to the Mppt and how it is connected? That detail is required to understand your situation. The also note that I believe the mppt will only start charging if the voltage is atleast 5V above your battery voltage. If two units are giving you similar issues check your panel configuration and cabling.

What is the SOC of the batteries?

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Michael Schmidt avatar image Michael Schmidt commented ·

Hi Kalito,

yes of course the Battery Voltage is much lower than 119V :)

i add you a picture of SOC / Battery Voltage / and Solar Charger

cust2.png

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