diy solar

diy solar

Victron Multiplus II is buzzing

corn18

Village Idiot
Joined
Sep 9, 2021
Messages
554
Have the 5er out this weekend for our first trip of the season. It is on shore power. We have a Victron MPII 12/3000 120x2 and it is buzzing loudly. I did some troubleshooting and the buzzing is a result of the DC side. With or without shore power, if there is a DC load, the MPII buzzes. I could run through all the configurations I tested to come to this conclusion, but there are too many to list. I have gotten to the point where I can make it buzz or not buzz by turning on/off DC loads, including the LiFePO4 batteries.

I plugged into the MPII with my laptop and it has firmware version 2.83 which Victron says is supposed to fix the buzz.

Not sure where to go from here. Wife is bugged by the buzz but not irritated enough to make my life miserable.
 
The following may be helpful:

 
I posted in that thread. Luckily my residential fridge buzzes at the same frequency and is twice as loud.
 
Back
Top