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: Aug 13, 2025
My Mitsubishi does exactly the same as David's above, there wouldn't be enough volume of water/heat in the primary circuit alone to defrost the heat p...
If you want to check what your pump speeds are set to here is the video, they can be set to 1-5 for heating and DHW as others have said 17L is low for...
@hillswick if you engage more radiators then it will take longer for the flow and return temps to stabilise so the heat pump will run harder. what f...
@davidnolan22 Nice out of interest do you know how much power it pulls at that temp at 32C my 8.5KW unit pulls about 800W
@davidnolan22 good spot, that should probably be ideally removed not needed for a heat pump. Needs to be set so it doesn't do anything if possible. ...
@sandman1600 If you unscrew all of the actuators then the circuits will always be open regardless of what the thermostats are doing, then you just ...
@sandman1600 Control logic is either auto adapt, weather comp or fixed flow you want weather comp the graph symbol in the image below What is tell...
You don't say what flow temperatures you are running at, are you using weather compensation or a fixed flow temperature? What are the flow and retur...
@sandman1600 What controller do you have there are good videos from mitsubishi on how to set weather compensation, I will assume you have an FTC7 cont...
If you have a Mitsubishi wireless controller then it should be set to Room RC not Main RC, if you use Main RC it will now be using the main controller...
That is the target room temperature and if its showing -20C then its not getting a temperature signal from the thermistor. Are you using the main co...
Latest Posts
-
Nobody will, that's the point of this thread, the heat ...
By JamesPa , 33 minutes ago
-
RE: Cooling with air to water heat pumps
On a detached house you can have two odus under permitt...
By JamesPa , 1 hour ago
-
RE: Indevolt Batteries UK Support & Info Thread
Good morning. I just came across your website. Was ho...
By iRadiate , 5 hours ago
-
RE: GivEnergy inverter tripping due to over-voltage?
Many thanks for the helpful and educational inputs! I...
By Tim441 , 12 hours ago
-
RE: Failed Heat Pump Install: IWA Claim Rejected
Many of the estimates we received mention IWA and RECC....
By Batpred , 16 hours ago
-
RE: Rural burning – I've had enough
Same here in Finland. It's strictly forbidden ...
By upnorthandpersonal , 16 hours ago
-
RE: Renewables & Heat Pumps in the News
Something worth flagging... we've just published a news...
By Mars , 16 hours ago
-
RE: Renewable Heating Hub Homeowners' Q&A Podcast
The Homeowners' Q&A podcast is back... I've changed...
By Mars , 17 hours ago
-
RE: Anyone concerned about GivEnergy?
I have already signed up with Axle so yes, that takes c...
By KevH , 18 hours ago
-
@batpred Would it pass the airbnb feedback test no. I...
By EtchedPixels , 1 day ago
-
A quick update... we've just launched the beta version ...
By Mars , 2 days ago
-
RE: Who Actually Owns a Heat Pump in Britain? We Asked. Here Is What We Found.
The age part doesn't surprise me - only 25% of UK home ...
By EtchedPixels , 2 days ago
-
RE: Home automation and the cloud; is there a better way?
Nothing you've said there, @etchedpixels, is something ...
By Majordennisbloodnok , 2 days ago
-
I've heard from others living in the vicinity of Derril...
By Transparent , 2 days ago
