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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 12, 2025
Profile Activity
Topics: 17 / Replies: 2832
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RE: Vaillant - Downstairs radiators not getting warm

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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant - Downstairs radiators not getting warm

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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best temperature wave form for best economy and efficiency .

@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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ideal Logic 10kW Heat Pump Pipes Noisy and Very Expensive to Run

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 ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

Good. Please post any outcome and be persistent with Vaillant. I think you may have a particular problem, but even the 'commonly reported' increase ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Its becoming clear (and installers are beginning to come clean on the matter) that buffer tanks are unnecessary in 95%+ of domestic situations. They ...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Samsung Gen 7 Scheduling

In another thread somebody with a Samsung HP is adjusting/optimising their WL settings having balanced rads and disabled external temperature control,...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

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 ...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

OK I get you now, you are using the scheduled programmable temperature feature on the Drayton. This will switch thee heat pump on or off according to...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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