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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Aug 20, 2025
Profile Activity
Topics: 23 / Replies: 471
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Reply
RE: Watch Where Your Installer Fits Motorised Valves

@editor I see. I knew there would be sound reasons. My ASHP is barely big enough, and I've seen aveage room temperatures drop a couple of degrees over...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Watch Where Your Installer Fits Motorised Valves

Thanks @Mars. A 'boiler' you say, this is blasphemy!

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Watch Where Your Installer Fits Motorised Valves

Hi @editor, has the valve failed or the motorised actuator?

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Grant ASHP - flow temp on display often nonsensical

Hi @crimson, I think field 2 is compressor discharge temperature, field 0 is return water temp, 9 is leaving water temp. Check the Grant installation ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs

Yes, this! Thermal mass is key. Ancient civilisations knew a thing or two about using solar reflecting lighter buildings, natural ventilation for cool...

9 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: ASHP + UFH, no circulation pump

@pie_eater I don't know the Daikin Madoka product, but having had a quick look on-line, it seems it's a simple binary [digital on/off] thermostat comp...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Cutting Out. Hot Water fine.

Great to know you've made good progress @martyj76, and ruled the pump out. The two port valve could well be faulty, it might be a fault with the valve...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP + UFH, no circulation pump

@pie_eater different manufacturers have differing accuracies of COP data, some are just considering the refrigeration compressor, some are total unit ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP + UFH, no circulation pump

Beware the OEM COP 'vanity data' - most if not all heat pump controllers give very flattering [for flattering read exaggerated] COP data. True measure...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Bad COP? Long Pipe Run on Cosy6 Saga Continues.

With the ASHP installed in a neighbouring street it's going to struggle with heat loss & hydraulic resistance. Clearly no-one had done any proper ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Hi there @bajj, you've cracked it I think with setting parameter 21 41 to 2degC. UFH will have a very slow hysteresis response as the mass of the floo...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Cutting Out. Hot Water fine.

This is strange @martyj76, if the unit was installed by a Grant G1 installer, and has been annually serviced by a Grant G1 service engineer, it will b...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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