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skykay avatar image
skykay asked

Error 66 with equal settings

Hi, please see the attached pictures. I have added 2 Solarcharger 250/85 mc4 ve.can to the system.
(Multiplus 24/3000 with cerbi gx and agm batteries with 30kwh) Before that everything was fine. Now I get error #66. All devices have the newest firmware. Both smartcharger have the same settings. I saved settings from #1 and copied it to #2. I confirmed the that all settings are equal. A bmv 712 is installed. Both charger are connected with a cat7 cabel and #1 is terminated #2 in the middel and cerbo is the end with terminator. Can you please help?

error
1.jpg (38.8 KiB)
2.jpg (63.4 KiB)
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3 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

What happens if you connect only one MPPT?

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skykay avatar image
skykay answered ·

When I connect #1 it works...#2 says not connected.
When I connect #2 it works...#1 says not connected.

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skykay answered ·

Now I changed the sequence and it is working. I put the other smartcharger in the middle between cerbo and 250/85 and it is working. Didn't know that the sequence matters...

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