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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...
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RE: Heat pump installation quotations
@batpred Excellent, thank you very much!
By sttpd1917 , 9 minutes ago
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Hopefully this will answer your question. To...
By ASHP-BOBBA , 10 minutes ago
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RE: Help me keep the faith with my air source heat pump installation
I would be interested to find out if others do this and...
By ASHP-BOBBA , 19 minutes ago
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Harvest Thermal - ASHP with a smart thermal battery
I thought people here might find this interesting, even...
By springswood , 2 hours ago
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Don't you dare. You just carry on as you are; as @batpr...
By Majordennisbloodnok , 2 hours ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@ragtime27 some rooms in our house only have one place ...
By Judith , 2 hours ago
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@mkz, that's very helpful. Even if Urban Plumber are no...
By Majordennisbloodnok , 5 hours ago
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RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 6 hours ago
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My first question is why bother with the auto balancin...
By JamesPa , 6 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 7 hours ago
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
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RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
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