Hi everyone! I am using a Multiplus 12/1600/70. Today I noticed a sound from Multiplus. When I tap the Multiplus box the sound disappeared! The sound came again when I tap the box! The Multiplus was on Inverter and the load was just a Modem with 0.2A consumption. At this time, the solar charge controller was on Float. Is this sound normal? In this system, I have a Multiplus, a BMV-712 and a SmartSolar 100/50.
The Multiplus is not connected to grid or generator.
Thanks in advance, Milad
