Last seen: Mar 13, 2024
@jamespa External box in brown is the LLH (heat exchanger is inside the main Altherma internal unit above, the upper brown box); cycles on/off time - ...
Thanks James. I'd come to the same conclusion about the effective system volume as the radiators are likely to be largely closed when the house is sit...
I think the estimated energy usage is way off. The calculations show 19,000kWh/yr but even with two EVs doing nearly 20,000 miles between them, we onl...
Thanks James, TLAs are the way of the world these days! It's cycling a lot at outside air temperatures of between 8 and 15C, less so at 7C or less. Do...
@jamespa Thanks. Apologies, I've no idea what "oat" is. Assuming it's something to do with temperature, I have it set to target 38C, and it's aiming f...
Ok, finally the problem has been solved!! It seems the original problem was a faulty pressure sensor or pressure control board, causing the system t...
Thanks Alastair! It's looking hopeful now. It's basically been about 30-50% below COP since day 1, yet we're still seeing about COP=3 at the moment,...
Daikin have been out today and have diagnosed either a faulty pressure sensor or a constriction on the pipe, since the pressure reading that gives the...
And overnight the unit failed with an overtemperature on the sensor on the outlet from the compressor... looks like a misbehaving valve which isn't th...
Had the engineer visit today and he can't find a cause for the problem. No loss of refrigerant, and he's confirmed the hissing sound isn't normal. Al...
Thanks Bob. I'm just using figures from the front panel screen, nothing special. It doesn't say anywhere about the energy out details, but I'm pretty...
Latest Posts
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RE: Air Source Heat Pump - Side Alley Suitability
There are enough red flags in this to be concerning. I...
By JamesPa , 1 minute ago
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RE: In the middle of an ASHP installation - a few questions (and issues)
I don't know I checked the data resolution and it...
By JamesPa , 2 hours ago
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RE: The Rise and Fall of Europe’s Most Generous Green Subsidy
@editor Attached images of external insulation. Think...
By Dwynwen , 3 hours ago
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RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's
@trebor12345 The Auto function is supposed to adapt au...
By Heatgeek , 17 hours ago
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RE: The Great British Heat Pump Quiz
@allyfish thanks for the feedback and glad it was fun! ...
By Mars , 22 hours ago
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RE: help sizing rads based on room by room heat loss
If its 1988W at DT 50, which is how most radiators are ...
By JamesPa , 1 day ago
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RE: Career change – entering the world of heating and heat pumps
@editor Mars, thank you. That's along the routes I was ...
By Lakey , 1 day ago
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@editor thanks Mars, it's a rare occasion I'm looking f...
By big_si , 2 days ago
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RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW
@ashp-bobba and @jamespa - thank you both for all your ...
By CBrenewable , 2 days ago
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Win one of five "Heat Pumps 101" Courses
Heat pumps are gaining traction in the UK, but between ...
By Mars , 2 days ago
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RE: Agile: average import cost vs other tariffs?
@toodles thanks for the analysis. I'll be really intere...
By Old_Scientist , 2 days ago
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RE: ASHP Ecodan L9 error - No Heating but Hot Water
@phoenix15 I'm no plumber so please don't take this as ...
By dnagre , 3 days ago
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RE: Is this normal? Click of the DHW returning to space heating
@grantmethestrength Oh sorry to hear that, there should...
By ASHP-BOBBA , 3 days ago
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@ashp-bobba TBH the ladies are rather disorganised, so ...
By Cathyem1 , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
And for those of us without an automatic irrigation sys...
By Majordennisbloodnok , 3 days ago
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Logically, the lower frequency = more gentle, yes, but ...
By SUNandAIR , 3 days ago
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RE: Ideal Logic ASHP - change from 55°C to 35°C Heating?
Good point. I’ll keep my eye on the manifold temperatur...
By Tomdad , 3 days ago
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RE: How hard and expensive would it be to change panel and add battery?
@transparent It is a setting that Octopus make via the ...
By Toodles , 3 days ago
