Last seen: Jan 13, 2026
Thats a lot of defrosts although in fairness my Vaillant gets up to one per hour at times I don't know what you can do, if there are plants or anyth...
I think your concerns about abnormal refrigerant temperatures have been answered in this post. Once we have some data we can look at whether the fre...
@sim0n0 Sorry to hear that. Putting the past aside would you like to describe the current problems and tell us a bit about your system and house in...
Maybe. It says 'outdoor evaporating temperature' (not refrigerant temperature) - its not clear what that means and the graph seems to define a region...
The dominant loud noise is the compressor or fan which you expect to be working at max during defrost. The background rattle could just be ice, ice ...
Curious that it reduces the flow rate at higher flow temp. I wonder what the logic is of that? If it were looking to maintain a specific DT then it ...
I'm not so sure this is a great surprise, there is not much it can do about DT unless it can ramp up the water pump speed, which at some point it will...
@crimson Noted. At least you now have a confirmed route forward and a warm house. That, in itself, is a step forward however frustrating ...
Or just commission a plumber to do the replumbing? As soon as you touch it your installer will argue that it voids the warranty and I doubt any thir...
So sort of progress, but...are you certain its going to be OK when it gets cold again? Obviously thats the case, it always is! OK well at le...
Latest Posts
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RE: Ecodan Pump Issues… Circulation pump turns off when heat pump compressor turns off
@jamespa sorry James, yes larger surface area, messing ...
By ASHP-BOBBA , 4 hours ago
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RE: Advice for a novice on Mitsubishi Ecodan 6kW
In the Home Assistant firmware the data points...
By F1p , 4 hours ago
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RE: GSHP WOES! Midland based engineer recommendations?
@johnbroome if it is not the pressure in the expansion ...
By ASHP-BOBBA , 5 hours ago
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RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?
In recent cold weather th...
By JamesPa , 5 hours ago
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So I hear the export MPAN that UKPN assigned should be ...
By Batpred , 8 hours ago
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RE: Recommended home battery inverters + regulatory matters - help requested
From what I read, the Solis has a very long list of err...
By Batpred , 8 hours ago
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RE: Ideal HP290 14kW ASHP - how to optimise
Roughly this should cost you £250-£300 per peak month a...
By ASHP-BOBBA , 9 hours ago
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RE: New Daikin 11kW Altherma 3M install - is it working as it should?
@toodles Thank you for your input. As the days have got...
By Synthbuilder , 12 hours ago
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RE: Fan unit Making terrible noise HELP!!
@gutoffowc Oh no, sorry to hear that, are you in the Ke...
By ASHP-BOBBA , 14 hours ago
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RE: Sunsynk Whole House Backup Issue
@sheriff-fatman - could you please re-post that in the ...
By Transparent , 15 hours ago
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RE: Running my new Nibe ASHP efficiently
I didn't. I spent a while manually messing around with ...
By jamieheatpumpnew , 17 hours ago
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RE: I’m glad the cold spell is over!
I comparison with the 65kWh used above yesterday was on...
By Judith , 17 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
I should think so, I thought that pretty much universal...
By JamesPa , 18 hours ago
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RE: Setback savings - fact or fiction?
I'm also inclined to look into how a defrost is actuall...
By cathodeRay , 18 hours ago
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MLCP (Multi-Layer Composite Pipe) for ASHP
@editor nope. The info you reported was sufficient for ...
By iotum , 1 day ago
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RE: Experience - New Build / Complete New Heating System
@vincro I would be surprised if it is much above 5 to 6...
By ASHP-BOBBA , 1 day ago
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RE: Post-Traumatic Heat Pump Stress Disorder
Yes bang on and maybe I can illustrate that by way of e...
By iotum , 1 day ago
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