Domus MVHR bubbling noise

[jwpapi]

Hello, this is my first post here and I have moved into a new place in the last few months, so I thought I'd look for some advice for an issue we've got with our MVHR system.

 

Our Domus MVHR system, which is less than 2 years old in a new build, started making gurgling/bubbling noises a couple of months ago. The video attached is a good example of the type noise, the frequency and intervals we have experienced. It will do this most of the day, but every now and then, there is no gurgling for a good half minute or so.

 

The noise appears to be coming from the top left pipe(s), which I have zoomed in on in the video. It hasn't got any better or worse since it started, but It's becoming quite distracting and we'd rather solve it now just in case there is a real issue with it. We leave it on 24/7 as recommended and we have changed the two filters on the front panel (see two grey strips in the video), so we don't think it has anything to do with this.

 

Our neighbour who lives in an apartment of the same size and layout does not have this problem.

 

We have tried contacting Domus themselves, but no luck, our housing development will not help us, and we cannot seem to find any mechanics or repair companies that won't rip us off when we can't even be sure that they will identify the problem if they come and inspect it.

 

So if anyone has had a similar issue or has any advice, I'd be very grateful!

 

Thanks

[JohnMo]

That sounds the fan is hitting something.  Switch it off at the mains, and take the front cover off. Have a good look inside.  There will be a heat exchanger in the middle pull that out and that should give you access to the motors and fans -  the heat exchanger will be a tight fit, mark which way is up and only put back in the way it came out. The fans should rotate freely and make little or no noise.  If doubt film it and post someone will be able to advise.

 

What are the two flashing orange lights?

[ProDave]

Condensate drain will pass through a trap if discharging to an internal waste pipe.  I am sure I read a post a long time ago about something gone wrong causing a build up pf pressure and bubbles blowing through the trap?

[jwpapi]

Thanks for your responses.

 

We've considered them and we are leaning towards arranging for someone to come and service it, as we are afraid that we might damage it in the process of doing it ourselves, particularly if the heat exchanger is a tight fit as you said..

 

However, finding a company or someone who we can be sure that can help with this type of technology is proving difficult, so if you have any tips here that would also be greatly appreciated! We're based in north-west London.

[JohnMo]

Ask Domus, for an agent by you

[Roundtuit]

We had an issue with the condensate drain getting blocked on our ventaxia unit, and condensate building up inside the casing to the point the fan was catching it and making a noise.  To be fair, our noise was more 'watery' than yours.  There's not much to break inside; might be worth popping the cover off for a quick look if you're struggling to find someone to do it.