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: Mar 20, 2026
@cathoderay For what is worth, it was recently pointed out to me, in a Greek heat pump forum, that certain high-end manufacturers, like Hitachi or Dai...
I think I am short of radiators, as I have not done any changes after switching to heat pump from oil burner. Or I am doing something else wrong. &n...
Yes, it does not cycle and I use a buffer, as shown in Midea's diagrams for 2 zones. To use LWT below 35, you could "fool" the system by defining UF...
I do actually, but I don't yet run it in an "unconventional" way. This is a latest plot of operation: I have switched to UFH mode to see what happ...
Hi all. I have made some progress regarding cause of cycling. First thing I noticed, is that cycling is exaggerated when set LWT is less than 40 C....
@benson thanks a lot.
@benson My system is a "simple" one: no DHW, no defrosts, no decontamination. So it is rather easy to decipher control logic. Would it be possible to ...
Please excuse my persistence, but I am struggling to understand what triggers the pump on-off. I presume it is some internal check or external signal....
@mosibi I confirm this and the value in my machine (R290) is 35. But this is for radiators, If you tell it you use UFH, it will get lower. In fact it ...
@cathoderay How come water at 35 ish C flows through an IAT of 21 C and does not lose heat ? Is there a buffer or a secondary network with its own p...
@cathoderay If I can see correctly, there are periods on the graph where LWT equals RWT and during those periods the unit shuts. If this is the case, ...
I wonder why it is cycling ? I thought this should be avoided. Is some thermostat intervening ? Is the unit oversized ?
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Electricity price predictions
Chinese manufacturing has the ability to be very good q...
By Majordennisbloodnok , 3 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: GotGordon Manufacturer: Samsun...
By Gotgordon , 14 hours ago
-
RE: Summer heat is becoming the new winter cold in the UK. What are you doing about it?
@ian33a I am not easy with sleep either unfortunately…....
By MK4 , 15 hours ago
-
RE: Renewables uptake near you
In a village of under 40 houses...Conservation Area. I'...
By Tim441 , 1 day ago
-
RE: Home Alone with Home Assistant (previously A Beginner's Guide to ASHP Monitoring)
Great news, @bontwoody.
By Majordennisbloodnok , 1 day ago
-
Haier R290 Super Aqua Monobloc. Output capacity tables.
As I mentioned in my introduction post, I've been consi...
By Singlespeed , 1 day ago
-
RE: Air to air bus grant installer anywhere
I am consistently told by aircon folks (ie air/air) tha...
By EtchedPixels , 2 days ago
-
RE: What is possible with FIT, SEG, Hate Pumps and Batteries?
Thank you, everyone, for your replies. Our FIT provid...
By ian33a , 2 days ago
-
@mk4 And of course, the panels are less productive due ...
By Toodles , 2 days ago
-
RE: GivEnergy inverter tripping due to over-voltage?
I'm trying to get clarity on exactly when the inverter ...
By Tim441 , 2 days ago
-
RE: Samsung Heat Pump – Can't Activate TW2 Pipe Sensor (for Delta T Control)
Autocorrupt seems to be working overtime.
By Majordennisbloodnok , 2 days ago
-
RE: Vehicle-to-Home with a Heat Pump: Is the Technology Ready and Which EV Should I Buy?
I looked into that wallbox a bit more off the back of t...
By Majordennisbloodnok , 3 days ago
-
RE: Say hello and introduce yourself
@jandp awesome system I hope it works out well.
By Judith , 3 days ago
-
RE: Surface mount or bury primaries for heat pump installation?
@bobflux That's the stuff. The installer recommended tw...
By tomasmcguinness , 5 days ago
SPONSORS
