Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
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...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Siting of the external sensor on a heatpump
yes, it would have been easy to place it in permanent s...
By Batpred , 1 hour ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
You should (amost) always reject having a buffer, by wh...
By JamesPa , 3 hours ago
-
RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 6 hours ago
-
RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 8 hours ago
-
No, but the heat pump must be capable of delivering a S...
By JamesPa , 12 hours ago
-
Sorry to hear about the problems, its going to be somet...
By JamesPa , 13 hours ago
-
RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 1 day ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 1 day ago
-
RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 1 day ago
-
RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 1 day ago
-
RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 2 days ago
-
RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 2 days ago
-
@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 3 days ago
-
RE: Tell us about your Solar (PV) setup
We have a 6.56kW solar PV system (16x 410W panels) inst...
By Rob of York , 3 days ago
SPONSORS
