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: Mar 21, 2026
I think we may have a bit of a false reading on ours… I’ve fitted 2 bezel thermostats closer to the heat pump (for visual curiosity) and they show reg...
@davew, Derek and Kev, if the pump speed isn’t the cause one other possibility might be a buffer which as we know allows return water to mix with fl...
@davew hi. Unfortunately we don’t have any cop data or energy figures to work anything out. We are still waiting for a replacement FTC6 controller s...
@davew thanks Dave. That’s useful to know the speed effect of your setting change. We have also got A WM8.5 👍🏼
as luck would have it I closed my laptop while page C8 was on screen. pump speed ranges for the various HP models were on that page. Here’s a screen...
Maybe the government target of 600,000 installations per year is also not such a good idea - thinking how variable the quality of commissioning and ha...
@kev-m watching with interest what have you done so far? What parameters are you setting? also are you moving dip switches yourself eg sw5 no2 f...
@squeakysim I guess, and it is a guess, that this is where the Auto adaptive mode is a refinement of weather compensation. I was discussing with a ...
hi Sorry for the overload of information. It also seems a few people were writing to you at the same time. Also thanks for extra info eg UFHeating. ...
Hi Jasper01 I’d say you’re looking roughly right at the 8c end of the curve but I would think you might be a bit cold at the -3c end. Unless you hav...
@cathoderay it’s also the chaos of growth I think… a company may have 8 or 10 jobs on the go at any one week. That’s 10 plumbers of different attitude...
Latest Posts
-
Loud noises in the night - and one for the toolbox?
I was woken at 5am on Sunday to a very loud noise, akin...
By JamesPa , 36 minutes ago
-
RE: Advice on Vaillant Sensocomfort
The latest Vaillant announcement I saw said that they w...
By JamesPa , 48 minutes ago
-
RE: Debugging my legionella immersion heater
I notice this (66 is rather hot) with my legionella cyc...
By JamesPa , 13 hours ago
-
RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
@transparent I thought you would spot that wind turbine...
By Batpred , 13 hours ago
-
UK warm homes plan - how can it be delivered?
@editor Sobering thoughts on your article on the workfo...
By Batpred , 15 hours ago
-
RE: Setback savings - fact or fiction?
You are right to be intrigued by it IMHO. SOFAIK it is...
By JamesPa , 22 hours ago
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils there is no logic to oversizing a heat pump. It...
By AgentGeorge , 1 day ago
-
RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 2 days ago
-
RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 2 days ago
-
@majordennisbloodnok good advice, thanks for that.
By David999 , 2 days ago
-
RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 2 days ago
-
RE: Sizing an ASHP; Heat loss and kW
You can't measure heat loss with a website. But you ca...
By JamesPa , 3 days ago
-
RE: Estimating true heat loss from twelve months of consumption data
@ian33a — I have a sort of residual interest in this pr...
By cathodeRay , 3 days ago
-
Hi, Thank you. So its a Daikin Altherma 3M...
By Lbart68 , 3 days ago
