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Last seen: May 7, 2026
@editor It's available here -
@agentgeorge I'll give it a go with my Apple Watch later and see what it says. My HP location is down a narrow path, which is why I had to go with a C...
@editor I can't tell much on the sound side outside as I run mine in a different way to most (house set point 30 degrees, overall house temp managed b...
Went down to 0 degrees last night. Still oscillates a bit but not as bad as before.
@swwils are you on Cosy 9, as the Cosy 6 definitely doesn't when it modulates down. Does your Cosy heat output under or over-report?ah should have kno...
@swwils Next thing they need to fix is correctly measuring power. What card are you using for Home Assistant for these out of interest?
@kevh I have to go into the installer mode and check the version number. The new behavior seems to kick in after 5 degrees. You can see below where th...
@agentgeorge I am on Firmware Version 5.4.2 and have seen a change in how the heat pump operates below 5 degrees over the last few days. Runs a lot mo...
@kevh with the Cosy 6 I know it definitely goes to around 30-31 degC, so not surprised if the Cosy 9 is 35 degC.
@andrewj Seeing they deleted both threads with the pictures on the group... maybe wasn't meant to be public yet.
@andrewj Yeh, I am not sure. I assume though it is to allow the heat pump to boost over the normal set temperature in the off-peak periods and then ri...
@andrewj It's in the comments on the PCB post from yesterday. Here is the screenshot. The user is on the Cosy tariff as well, so it might be that it p...
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Latest Posts
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RE: Octopussy cosy 6 experience
@paultheheating Unless things have changed more recentl...
By Toodles , 5 hours ago
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RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Sorry I thought and meant to put 'may' in, but the diff...
By JamesPa , 7 hours ago
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The alternative would be to move some productive energy...
By EtchedPixels , 8 hours ago
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RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
By davidnolan22 , 9 hours ago
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RE: Adding data centre electricity costs to domestic energy bills?
Potentially the largest data centre hub in Europe and t...
By Jeff , 13 hours ago
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RE: Aerotherm and weather compensation
The principal cause of inefficiency if a heat pump is n...
By JamesPa , 1 day ago
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RE: Solar Power Output – Let’s Compare Generation Figures
Very nice. we’ve been super soggy here, but rather m...
By Papahuhu , 1 day ago
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RE: DIY powerflushing tutorial
Interesting! I toyed with the idea too. But I installed...
By bobflux , 1 day ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews Agree with the others on sequence: loft first...
By mk1234 , 1 day ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@etchedpixels Agreed, just a thought for others. I am...
By Watcher , 2 days ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 3 days ago
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Coming back on subject... A shortened version of the ...
By Transparent , 3 days ago
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RE: Say hello and introduce yourself
Perhaps it is time for an update on ‘our’ project. We h...
By Toodles , 4 days ago
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RE: Free app: run the immersion / heat pump from Growatt battery & solar surplus – no Home Assistant
Please bear in mind, everyone, that in order to use thi...
By Majordennisbloodnok , 6 days ago



