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Last seen: Oct 9, 2026
From OPs description I had the impression (quite possibly wrongly) that the water hammer is associated with the domestic hot/cold water not the heatin...
@davidalgarve Fwiw my house is more stable with pure WC than it is with any room influence , with the exception of the extreme ends of the season wh...
I agree with@jancood and incidentally it is unlikely to be anything to do with the ashp so unlikely an ashp specialist can help any more than any othe...
Noted. Its a pity you didnt capture the flow rate and return temp when it was in fixed FT mode, but you could capture it now or just go for the 95% c...
OK well so far as I can see there are now only three possibilities 1. The heat pump is unable to get up to the set temperature because of a...
Thats getting pretty convincing. Remember also to check that Night Mode isn't in operation.
@andy1618 see the very sage advice from @editor above. I took would bypass the installer initially and/or check the installation manual.
@adamk FWIW I managed unintentionally to 'coax' mine into making more noise than usual . The noise sounds rather like what you are experiencing and a...
Ok please post back once experiment complete. Give it a couple of hours to be sure. Ok looks like you have an llh which makes fault diagnosis mo...
You are in essence right. Adia only works with selected heat pumps and I dont think cosy is one of them. Don't worry, none of this is necessary if ...
I hear what you say but I would still perform the experiment it to be absolutely certain. Some thermostats, which should never be used with heat pump...
The black cylinder in the second photo looks like an llh. Is there a water pump nearby and how many pipes feed it? You can't ignore the fault wheth...
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