DiSiNTiGR8

Did you ask them for the firmware upgrade that allows the new low noise setting? Works for the 5kw inverter not sure about the 8kw.

When I was trying to figure out the buzzing on my setup I isolated the inverter everywhere except on its grid input. I also switched the house over to Eskom again. So the inverter was basically just another consumer from the grid like other appliances. It still sent the 15000Hz through appliances in this case.

I am looking for one or two Sunsynk 5.12kwh battery SUN-BATT-5.12 batteries to add to my existing one. Only stock I can find is of the 5.32kw one. According to Sunsynk the 5.32 one is not compatible with the 5.12.

I have asked them for details on how to raise a ticket for Deye owners to get their issues resolved. Will let you know.

Oh yes been back and forth since August last year with them sending proof and videos etc., my inverter went to the service centre had its motherboard replaced even because of the noise I was complaining about. At the end of the day I was communicating with a Deye engineer on the Sunsynk ticket logged for this issue where they then arranged for the firmware update and settings to be pushed. I am just extremely happy that they were eventually able to fix it as it was driving me mad having things in the house emitting the high pitch buzzing.

Yes on the Sunsynk 5kw issue resolved with firmware upgrade then settings pushed from their side fixed it. Just updating the firmware does not fix the issue. I would log a ticket with their support for assistance. Not sure how that would work for Deye.

It was a Deye engineer that I was talking to in the mail trail who initiated the update and pushed the setting so I am sure they will.

Great news for 5kw and I believe firmware is fixing it for 8kw users as well. Please see post here for update:

I was just about to post, the mail trail I have had going with the Deye / Sunsynk engineer brought a fix this afternoon. They pushed firmware update 3.3.8.4, inverter rebooted (power went out on essentials) then they pushed a setting that made F13 Grid mode changed Fault (essentials went out again) then when the inverter powered back up the noise was gone. Can also see the 15000Hz moved to 20000Hz now. I am so happy the house is quiet now. So don't get a fright when they do this process on your inverters when the Fault comes in, I got a shock and thought something broke on the new firmware.

Sounds like you are talking about the noise at the inverter itself and not from other devices in the house? So far each install I checked makes that buzzing sound at the inverter, it does get louder when the MPPT's start working harder as the sun gets stronger. I have my inverter in a cupboard (with some cooling) but when I close the door I can't hear it anymore. My issue is the noise that comes from my PC setup as soon as I connect it to the wall plug then the inverters buzz comes from my PC and screen. I have taken my screen to multiple other 5kw installs and experienced the same buzzing from every single one of them. Like others have said this is a hardware design flaw on the 5kw.

My install (5kw) and my colleagues install (8kw) are pretty much the same distance from the DB board. I have actually tested this theory and took my long roll up extension lead and snaked it from the furthest plug all the way to my PC and plugged the PC through it to get the distance. The noise was the same.

Looking forward to this feedback thanks! Helped a friend install a 5kw Sunsynk as well and it has the exact same noise as my 5kw. At this point I am convinced they all like that and the people who don't have complaints are the lucky ones who can't hear that frequency. My colleague who has a 8kw also has no noise being emitted into the house at all. So maybe only some 8KW are making the noise?

Thought I'd share some comedy to cheer everyone up... pretty funny to me what he mentions considering the topic of this and multiple other threads of reports coming from end users.

I will be attempting to replicate the filter Wiggly Electron built and shared in previous posts, seems like that might be the only solution. The filter Deye / Sunsynk provide to solve this is a waste of time and effort.

Thanks for the additional detail. Maybe after next payday I will try to source the components for your DIY option to at least try to filter out my PC plug noise like you did. I was only entertaining the test with their filter as I want to see where the matter turns out to go with Sunsynk and Deye, they are requesting a video showing my tests so will make one for them over the weekend and see what they say. From other users testing I knew it won't work. Didn't expect it to be worse though LOL.