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: Jun 1, 2026
Ah, that is much clearer, my manual doesn't have the statement about registers 200-208 being read only. Your decision to implement those resisters as ...
I stand corrected. The wonders of heatpumpmonitor.org never cease to amaze me!
I think it might be writable (horrid word). In my version of the modbus table, it is in section 2, Parameter Setting, as opposed to section 1, Running...
Excellent that it is there, but to me it is another example of hpm.org's less than clear labelling. At first, I read the x-axis label as Room hyphen O...
That is undeniably true and is something I meant to mention. But sometimes it can be good news, as it was for me. I thought I had 11kW trying to cover...
I can't even find it in the manuals, apart from in the modbus table. I wonder, where did you find it, and that it should be 35°C, which seems rather h...
I agree. It is very useful to have real data. It really is very easy if you have a monitored heat pump. Given a steady IAT, then your energy del...
You can send private messages via the Messages (envelope icon) button under My Dashboard top right of the page, but generally we like to keep discussi...
Here is the SPAB (Society for the Protection of Ancient Buildings) research on measured in situ U-Values vs calculated (spreadsheet standard tables et...
28kW - that is what spreadsheet based heat loss assessments do. I had similar but not quite as large variations in assessments. I expect I am telli...
@travellingwave — Thanks for your very detailed account of what you have done. I have a very similar situation, 200-300 year old stone building, solid...
Latest Posts
-
This is an interesting post and a breakdown analysis of...
By Escapist , 59 minutes ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
I tend to have a problem with absolutes, @deltona. Ye...
By Majordennisbloodnok , 5 hours ago
-
RE: Home automation and the cloud; is there a better way?
I totally agree, @wully, with your point about cloud/lo...
By Majordennisbloodnok , 5 hours ago
-
RE: Rural burning – I've had enough
@transparent, environmental protection emailed earlier ...
By Mars , 6 hours ago
-
RE: Cooling with with air to water heat pumps
@etchedpixels A few warmish days or a bit of snow an...
By Papahuhu , 9 hours ago
-
Good points @etchedpixels And it occurred to me that...
By springswood , 9 hours ago
-
Take a look at this link of what I did to encapsulate a...
By ASHP-BOBBA , 10 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
Thanks and noted. I dont see Vaillant doing a general ...
By JamesPa , 11 hours ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
Greetings my fellow heatwave sufferers! Over here, we n...
By MK4 , 11 hours ago
-
RE: Outdoor Battery Solutions?
We are on the same tariff, on 3.5p/kwh. So until early ...
By Batpred , 1 day ago
-
RE: Solar Yield vs Temperature.
@old_scientist Fair enough, that may be similar to t...
By Batpred , 1 day ago
-
RE: Lower electric tariffs for heat pump users
I suspect that would not be a difficult decision, if I ...
By Batpred , 1 day ago
-
RE: Vehicle-to-Home with a Heat Pump: Is the Technology Ready and Which EV Should I Buy?
Absolutely. We are going through another period when ou...
By Batpred , 1 day ago
-
I am frequently annoyed to see that my Growatt inverter...
By DavidAlgarve , 1 day ago
