Last seen: Jan 30, 2026
@paullacey From the diagrams I assess you have 2 heat pumps plumbed in "tandem" but controlled in "cascade". What the second heat pump can do is the s...
@bontwoody "but after a minute the 3 way valved closed." I might be wrong but could it be a 3 port, 2 way valve with mid-position? Oper...
@grahamf To save wear and tear on the pump why could you not run weather comparison during the winter months only, and fixed temp. for the other month...
@jamespa Surely the problem will be grid undersupply i.e when the wind fails to blow just when you need it to! This is the problem that needs to ...
@jamespa or it might be related to the number of nuclear power stations closed over that time frame? Since 2008, five UK nuclear power stations have...
@jamespa had the closure of coal powered electricity generation had a part to play in general increase? Rapid Decline:Coal's share of the UK's elec...
@toodles, touché chez. /\
A question for Inspector Watson?
@guydeb I take it you've not explored the option of using a single phase to 3 phase converter to run a 18kW 3-phase heat pump. Instead of £44k on a gr...
@ecobaker I'm still thinking that something is triggering the valve to close. In cooling mode on the rad, what are you setting as the rad target tem...
I see that these fan coil radiators either come with a two-way or three-way control valve built into them. What does the valve do? Well from a quick ...
@downfield I think the cooling capacity ratings for you fan coils are misleading for your application (I am assuming the units are mounted just above ...
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@editor has said a lot but let me address this one head...
By JamesPa , 9 hours ago
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RE: How to control DHW with Honeywell EvoHome on Trianco ActiveAir 5 kW ASHP
Well I've had an interesting few days and would like to...
By giganto , 10 hours ago
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RE: Peak Energy Products V therm 16kW unit heat pump not reaching flow temperature
Yes, here's mine. From the service manual parts numbers...
By bobflux , 14 hours ago
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RE: Underfloor Heating Installation Issues with Heat Pump
Thanks for sharing your observations, both of you. From...
By Jonatan , 14 hours ago
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Had to learn the hard way 🤣 now I'm sharing T...
By bobflux , 14 hours ago
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RE: Issue with a Grant Air Source Heat Pump & Tado Smart Thermostat
Im assuming from your original post that hysterisis ref...
By JamesPa , 15 hours ago
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RE: Heat Pump vs New Gas Boiler for Inherited House - Worth the Extra Cost?
Hi @fretless6 Mike, I have experience with Taggas (Re...
By Old_Scientist , 17 hours ago
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RE: Daikin Altherma 3 LT compressor longevity question
@bobflux With my limited HA skills I can't ad...
By Ubert767 , 18 hours ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
Now seems a good time to summarise the costs and effici...
By benson , 22 hours ago
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RE: Tell us about your Solar (PV) setup
@mk4 Charge to 100%, discharge down to 10%.
By bobflux , 23 hours ago
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RE: Connecting Growatt SPH5000 over wired ethernet rather than wireless
The simplest wired option is usually the Growatt Ethern...
By Jonatan , 1 day ago
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RE: Electricity price predictions
@jamespa And it seems some of the nasty public cloud...
By Batpred , 1 day ago
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RE: Jokes and fun posts about heat pumps and renewables
Technology is rapidly advancing. BBC News reported th...
By Transparent , 2 days ago
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RE: Do Fridges and Freezers have COP ratings?
@editor Thank you all for your replies and submitted in...
By Toodles , 2 days ago
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I know and yes. The secondary deltaT wont necessaril...
By JamesPa , 2 days ago
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RE: Designing heating system with air to water heat pump in France, near Lyon
Just love the way you put it! 🤣
By Batpred , 3 days ago
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RE: Safety update; RCBOs supplying inverters or storage batteries
Thank you for sharing. So it seems that your Schneid...
By Batpred , 3 days ago
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RE: Forum updates, announcements & issues
@upnorthandpersonal thanks for the thoughtful, consider...
By Mars , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@mk4 All 21 panels have their own Enphase IQ7a microinv...
By Toodles , 3 days ago
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RE: Setback savings - fact or fiction?
Great, so you have proven that MELCloud is consistently...
By RobS , 4 days ago
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RE: Mitsu PUHZ120Y 'Outdoor Temp 'error?
Thanks David & James It almos...
By DavidAlgarve , 4 days ago
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RE: Surge protection devices SPDs
@trebor12345 - your original Topic about the right type...
By Transparent , 4 days ago
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RE: Help needed with Samsung AE120RXYDEG
@tomf I’ve been sent this from a service engineer at Sa...
By Mars , 4 days ago

