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Last seen: Nov 12, 2026
DHW flow temp is completely separate to space heating flow temp. The offset is added to the target DHW temp to get the FT for DHW. 15K should be amp...
Interesting. I must admit Id be very reluctant to get a different model to the one I need because of a known software problem, assuming Vaillant adm...
OK so downstairs is 'after' upstairs. You may have to throttle down the LSVs upstairs, increase the pump head if thats an option, and open up (if you...
Something is wrong with the plumbing for sure. Have the downstairs rads been bled? Are they on a separate primary or do they share a primary with th...
Im not an Ecodan exert but I would say that the first picture confirms its cycling, roughly every 15 mins If its about 8C outside, which the BBC sug...
Can you post some plots so we can have a look please? At present many heat pumps will be defrosting (which can look like cycling) because current te...
@ivanhoew I must say I echo what @cathoderay is saying here. I hope what Im about to add doesn't offend you (and apologise if it does - its no...
Good you are making progress. It sounds like the internal noise problem is fixed, just in case it's relevant it took 4 weeks for all the air to come ...
Good. Please post any outcome and be persistent with Vaillant. I think you may have a particular problem, but even the 'commonly reported' increase ...
Its becoming clear (and installers are beginning to come clean on the matter) that buffer tanks are unnecessary in 95%+ of domestic situations. They ...
In another thread somebody with a Samsung HP is adjusting/optimising their WL settings having balanced rads and disabled external temperature control,...
Thanks for coming back on this. As you have probably gathered Im not a Samsung expert, just an amateur who has been studying this stuff for a couple ...
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Latest Posts
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RE: Plug and play solar. Thoughts?
I ordered one of these kits from City Plumbing
By Singlespeed , 11 minutes ago
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@batpred The Daikin temperature probe protrudes from th...
By Toodles , 2 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 4 hours ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
They don't have to try. Our entire system is d...
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RE: Why don't people choose heat pumps?
Fair enough. I guess I was thinking of pipes that run ...
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RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
Got excepted for the grant now so thanks for the replie...
By Chilli304 , 8 hours ago
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Daikin Altherma 3 R F+W, room thermostat control, weath...
By JanHarley , 9 hours ago
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RE: Buffer tank on a 2 x 14kw Ecodan system
Pretty much as I had guessed in my crude scaling from m...
By JamesPa , 12 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
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Six books in three years and I think I’ve now covered j...
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RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
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