Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Sep 9, 2026
Not sure if it's the same as you but I get a one off loud fog horn sound when flushing the toilet or running a tap. It only occurs after DHW heating...
@thebinman Thanks for the comment. I suspect my system was simply set up on the medium settings and the noise problem didn't materialise until the r...
@toodles Thanks. The LED display is not very clear. Appreciate you looking. I will try lowering the speed on my Wilo secondary pump to see if it wid...
@toodles my system is slightly bigger than yours with 16 rads and of course with a 25L buffer. With your Wilo wattage of 7-8 watts versus mine of 20...
@toodles Yes, it's a Wilo Pico 25/1-8 (ROW). When I adjusted the speed, the LED display went from 39w / 1.6 to 20w / 1.3. I have no idea if this i...
Regarding the noise in my airing cupboard, my installer will visit but in the meantime he suggested reducing the Wilo Secondary pump speed slightly. I...
@burtis Hi. In my case I don't think the noise is to do with the external pipework as we would then get the noise when just running DHW. Just a small ...
@allyfish Thanks. I was hoping that having no clamp was the reason for the excessive noise. Guess I'll need to wait for the installer to visit. No...
@allyfish Thanks. One end of the pipework has a bracket to a roof strut and has rubber at the joint to the joist. However the other end (out from th...
@allyfish Thank you for your comments. I have only just started to use the heating side of my installation but fear that I have exactly the situatio...
Hi. Unfortunately on-going. Mitsubishi agreed that the immersion was taking too long and also pointed out that my software was out of date. Instal...
@editor Thanks. I, of course, thought something was wrong with the timings but wanted to be sure what is normal before contacting my installer or Mi...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Next steps on my ASHP journey: Radiators and Pipework
If you are considering phasing the project, then I woul...
By GrahamF , 4 hours ago
-
RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
By JamesPa , 6 hours ago
-
Never assume, it makes an ass of u and me! OK, tha...
By JamesPa , 6 hours ago
-
RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 8 hours ago
-
RE: Is it the house or the equipment?
@springswood We have two Daikin single split A2A syst...
By Rob of York , 9 hours ago
-
RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 1 day ago
-
No, but the heat pump must be capable of delivering a S...
By JamesPa , 2 days ago
-
RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
-
RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
-
RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 3 days ago
-
RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
-
RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 4 days ago
-
@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
SPONSORS
