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: When will heat pumps and install prices come down?
In answer to @egp01 original question: "I am currently ...
By JamesPa , 20 minutes ago
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I went on Wednesday. It was definitely and interesting ...
By JamesPa , 49 minutes ago
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@abam48 I’ve been at Installer Show this week and back,...
By Mars , 1 hour ago
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RE: Battery storage to run Heat Pump.
@jamespa jumping on this thread late, and I'm of a simi...
By Scalextrix , 2 hours ago
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RE: Commencing on an ASHP Installation Process
And on the second day, we have a completed installation...
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop
Its the flow temperature for the heating circuit, it me...
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@dowallydrifter OK. I would recommend you read t...
By JamesPa , 15 hours ago
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RE: Solar to power Heat Pump for DHW
Wow, how big is your heat pump that it is pulling 6kW d...
By Old_Scientist , 19 hours ago
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Adding battery storage to SolarEdge PV system
Hi, I think I've narrowed down my choice to a Sunsynk 5...
By nazuro1041 , 1 day ago
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There are DHW tanks with a built in heat pump that take...
By JamesPa , 1 day ago
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RE: Vaillant AroTherm Plus 7kW
If the thermostat is connected to the call for heat ter...
By JamesPa , 2 days ago
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RE: Renewables & Heat Pumps in the News
Yes I realise I'm picking this up a week late...... but...
By Transparent , 3 days ago
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RE: Surface mount or bury primaries for heat pump installation?
@tomasmcguinness HI, The rules is a best practise, the ...
By ASHP-BOBBA , 4 days ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?
@cathoderay how did you get a script to run for that- d...
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
@ashp-bobba thank you, and equally so, thank you for ta...
By Mars , 5 days ago
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@judith good to know… I’ll continue to feed Wattson, an...
By Mars , 6 days ago
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RE: My misgivings about installing ASHP and solar panels via the ECO4 scheme...
@editor great article re accreditation. I note ISO/IEC ...
By Bart , 6 days ago