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: Jan 28, 2026
It is bonkers. Especially when the plumber says oh don’t have too big a difference between off and on temps on the zones keep to 2C diff. Sometimes ke...
@mikefl thanks Mike. Can confirm 4 works as expected. Only 2 of the 3 zones have lights on the valves but when hot water mode comes on can see ...
It’s all rather frustrating. Far as I know Grant specifiy the use of a LLH. Thankfully I’m in a ‘fortunate’ unfortunate position. The contract f...
I’m thinking back through the last couple months. If a valve closure could cause this issue of flow being insufficient or its primary flow v secondary...
Yeah I don’t see it being useful at this point lol. Especially as the ASHP is running at 50c and I’m not getting that through. Cost to heat ratio is h...
So no change in heating over night. seems the 3am-4am hot water run worked as that’s sitting at 45c 3.5 hours later. So least we have that. ...
Apologies for string of posts but putting down findings soon as I have them. as was messaging plumber changed second pump speed up one. That then se...
Plumber is going to contact Grant it seems. Just very odd only top left pipe to LLH is hot. All other pipes cool to touch. Can’t workout where t...
No chance of heating. Top left pipe not getting heat whatsoever. Which explains why rads never warm. It’s been nearly 3 hours so I’d expect some rise ...
Yeah not quite sure what’s going on with the flow. Interestingly now I’ve been given more of a tour the flow rate is on the bottom right from the bott...
So no call from Grant yesterday. So I rang up this AM and was told if engineer visits Monday and it’s not manufacturer fault it’s £150 plus £60 an hou...
Plumber's been. Changed fuse for hot water panel, nothing going to it, so that's now on the electrician to come. I asked about the valves closed -...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 4 hours ago
-
RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@susannasaunders That's a serious amount of solar PV ...
By Rob of York , 9 hours ago
-
RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
So far there is nothing on the value of the BUS grants ...
By Rob of York , 13 hours ago
-
Coming back on subject... A shortened version of the ...
By Transparent , 16 hours ago
-
RE: Say hello and introduce yourself
Perhaps it is time for an update on ‘our’ project. We h...
By Toodles , 17 hours ago
-
RE: Marvel Heating liquidation
The interesting thing about the IBG: when I called them...
By davidnolan22 , 1 day ago
-
RE: Free app: run the immersion / heat pump from Growatt battery & solar surplus – no Home Assistant
Please bear in mind, everyone, that in order to use thi...
By Majordennisbloodnok , 3 days ago
-
RE: The good, the bad and the not that great – my heat pump installation
@burtis Thanks for posting this and Im so pleased you ...
By JamesPa , 3 days ago
-
RE: I need help with Ecodan ASHP
@f1p It turns out there have been a solar panel install...
By Andris , 3 days ago
-
RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews your installer would be right to say that the...
By GrahamF , 3 days ago
-
RE: Tradespeople on Their Phones: What’s Acceptable When They’re Working in Your Home?
Actually, that's a very important point. I've only ev...
By Majordennisbloodnok , 4 days ago
-
RE: Aerotherm and weather compensation
These are likely inked. The basic explanation is tha...
By JamesPa , 4 days ago
-
RE: Electrical works for air to air heat pump
agree with above. I have not had extra costs added wh...
By Batpred , 4 days ago
-
Good to hear that you found a solution. Absolutely a...
By Batpred , 4 days ago
SPONSORS
