question

Oleksandr avatar image
Oleksandr asked

Quattro with weird noise

Hi!

On several sites, after a few months, Quattro started making specific noises IMG_7580 (1).MOVimg-2900.mov

Noises appear only when grid is connected. Noise occurs only when connected to the network. In inverter mode, the inverter worked without any strange noises.
And it did not depend on the level of load

Who knows what it could be?
.

MultiPlus Quattro Inverter Charger
img-7580-1.mov (6.3 MiB)
img-2900.mov (3.4 MiB)
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1 Answer
mvas avatar image
mvas answered ·

Is the AC Input voltage or frequency, too or too low?

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