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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Sep 9, 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...

10 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!

10 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?

10 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 ...

10 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...

10 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...

10 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...

10 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 ...

10 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...

10 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 ...

10 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...

10 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...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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