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 26, 2026
@harriup Morning, yes, my pump speed is 3, flow rate of 9 off the top of my head. does that seem OK? My issue is the fact we've struggled to reach 4...
@gary Agreed, installer needs to look. I did up the operation time to match schedule but it's still struggling to reach temp and it still switched to...
@gary It's already on Std , it was one of the things I checked earlier, I've been watching it for the last coupe of hours, it's just paused the DHW he...
@gary The HW schedule has kicked in for evening showers, despite the timer for pump set to 24hrs the pump has auto switched off for the hot water hea...
@gary Will give it a try, thanks Gary.
@gary Yes the heatmiser is set for 24 hrs running. The reason being we never really know when HW might be needed at the taps, especially the weekends...
@gary I have two of these in the control room, one looks to be UFH manifold side and the other DHW. I have it set 24hr because if it isn't then ou...
@gary Yep, it's on 3. Here are the last two hours of info: Every hour it does this, this is the first winter we've gone through since he...
@gary Weird one, checked with partner, she wasn't using the hot water during this period!
@harriup @gary I really do need some help with this one. It seems my HW never gets up to 47 target now due to defrost cycle running every hour. It g...
@gary That's a good observation on emptying the tank!! I wasn't at home but will check with the other half if she was up earlier than planned. Once ...
@gary DHW was set to heat 1hr prior to this time and has been fine until this morning, it only needs to go from 30 ish to 47 in that hour, it seems to...
- 27 Forums
- 2,758 Topics
- 64.9 K Posts
- 2,632 Online
- 7,162 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Where heat loss surveys seem to go against practical reality
I am amazed that there is not something out there to me...
By JamesPa , 1 hour ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 7 hours ago
-
RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 12 hours ago
-
-
RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
-
RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 1 day ago
-
RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
-
RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
-
It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
-
RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 2 days ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 4 days ago
-
RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 5 days ago
-
RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago



