Just finished installing the Victron Multiplus 3000 (12v).
Only power source connected are the batteries. (so no charging or shore power or solar yet).
When I turn on the unit, I hear a light hum (which I think is expected).
When I turn on the heat gun at low setting (500-600W) .. I suddenly hear a really loud humming/noise.
Funny thing is, when i change to high setting (1200W) .. the noise goes away!!
Driving me crazy!!
Any help is greatly appreciated!
Thanks,
Sush