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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Nov 7, 2025
Profile Activity
Topics: 23 / Replies: 488
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

@mellow that will be fine to have the internal pump running on, it will be to remove residual heat and pressure from the condenser inside the ASHP, an...

1 year ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

@mellow this is good to hear. The tried and tested solution of 'pratt about with it until it finally fixes' seems to have come good for you. 😉 Your...

1 year ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?

Grant charges me £250.80 for a combined service of a 10kW Aerotherm ASHP, plus a 210L pre-plumbed cylinder. 'ServicePlan2' A condition of the product ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice on ASHP choice needed

Excellent observation @derek-m, modern well insulated homes with low infiltration/exfiltration AC/h values tend to suffer from overheating upstairs. T...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buffer tank in primary circuit?

Hi @Mike, says 65degC on the Samsung Data sheet/p> Other data sources support this:

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buffer tank in primary circuit?

Hi @roel. Welcome 🙂 The Samsung Gen6 12kW ASHP can heat water up to 65degC, which would charge your DHW tank to 60degC within a reasonably short ti...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Hi again @mellow, had a play with my DHW timer to see if I can replicate your issue. Right, there are four zones and each can have up to 4 time period...

1 year ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Hi @Mellow, I hope I can help, as I have the same Grant 10kW ASHP, Grant branded Heatmiser 4 channel DHW thermostat and a 210L Grant pre-plumbed cylin...

1 year ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Dodgy Vaillant ASHP foundation & Eddi Diverter Making Central Heating Water Dirty

@jennyross a couple of thought on this one: Vaillant ASHP monobloc support: If the installer used an existing base, such as a patio, then subsequent...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: In the news

InstallerSHOW 2024 opens today at the NEC in Birmingham. Here's a thread for discussions on new products, developments, news, etc. Grant launch thei...

1 year ago
Forum
Well & Truly Off The Grid
Reply
RE: Legionnaires' Disease & Home Hot Water: Understanding Risks and Prevention

I've ditched the weekly 1hr Legionella cycle using the 3kW immersion heater fitted to a Grant 250L pre-plumbed cylinder. I was finding it ineffective ...

1 year ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Placement of Samsung R290 ASHP

Sadly a very significant downside, turned out the 'too good to be true' HFO synthetic refrigerants like R1234yf and R1234ze were, well, too good to be...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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