wow, searching the community there's just too many complains about transformers sound level. Definitely not suited for apartments.. Whats your opinion?
asked
too many buzzing noise complains coming from Multiplus-II
Hi @Carlos,
One important thing to note in your research is the serial number of the MultiPlus-II (both that you might be purchasing, and that is being reported/the complaint).
The electronics design in the MP-IIs has been improved to run the fan better and have it make less noise.
The control, and thus the noise, is improved for all speeds except full speed. In other words, at 100% fan speed, there is no difference between the old and the new models.
This fan noise improvement is seperate to a frequency hum from the transformer, which will be the same (and also depends a lot on the local grid AC input).
Hi @Guy Stewart (Victron Community Manager)
The fan noise is not an issue according to my research. As you stated, Its the frecuency hum from the transformer. What's the quietest Victron inverter in that regard for US grid system 120v or 120/240? I'm willing to pay more for a quieter experience.
Regards!
Hi
@Guy Stewart (Victron Community Manager)
Can you clarify when external fans are turned on, assuming this is done using an assistant?
Is this as soon as the internal fans start, only when they reach 100% speed, or somewhere in between?
Thanks :-)
Dear @Guy Stewart (Victron Community Manager)
How about frequency humming noise from the transformer? Have you found any solution for that? I just got 3 pcs. of MultiPlus-II 48/8000/110-100 230V installed in my garage and hear that humming all over the house. I will have to return them if my installer finds no solution for that.
Best regards!
I have 3 HQ2210 units with really awful fan noise - is the improvement a software fix (better, less choppy pwm regulation) or a hardware improvement?
About time too!! so is this a hardware fix or software fix?
What about older versions that need fixing?
The only fix i found to make is much quiter was a fan change and rubber mountings and a capactor across the fan terminals.
Maybe Victron should supply a kit to effected models that can't be fixed ?
Regards
Rob D
NZ
Hi Rob,
unfortunately I think your question for HW or SW fix has not been answered. Do you have more information? I have a new Victron and the SN begins with HQ2223, so I assume I have still a noisy one (it hasn't been installed yet) and the change mentioned above is on HW side.
Now, since some time has been passed, do you think your solution with SUNON and 47uF is still the best way to go?
Thanks!
morres
I know there has been good success with significantly reducing fan noise by just replacing the fans with a good quality one ($) from Sunon. No caps added just a fan swap.
RS catalogue number is 7588276.
You need to accept whatever risk/warranty loss comes with a modification.
Having compared the old inverter to the newer one, the improvement is massive and there is probably a good business opportunity to retrofit to some installations.
Hi Yes it is, this is what i do for my clients who i install for due the noise issue.
Replace fan, fit cap, and vibration mounting fitted to make it more exceptable.
Regards
Rob D
NZ
Hi Rob, if you read this can you tell me what (if) you do for clients with a 48/10000? Because after all I've read there is no such option to swap fans?!
Hi
I haven't done a 10kw unit yet, the one install i am doing is in a garage so won't matter to much.
I believe after HQ2229 serial number they have fixed the issues on this model now.
Regards
Rob D
NZ
@Rob Duthie Out of interest what Vibration mounts do you use ? I have a Quattro 48/8000-110/100 fixed to a loft wall on plywood and it is vibrating to the downstairs. Thanks in advance
Too bad, I had one HQ2211
:(
