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Painter26
@painter26
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Joined: Feb 19, 2026
Last seen: May 11, 2026
Profile Activity
Topics: 1 / Replies: 31
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

@toodles thank you. I may top the pressure back up to 1.3 bar while the flow rate is at its lowest just to see what it does when the outdoor tempera...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

  Thanks @toodles . When I explained the tap spluttering to my installer he did suggest perhaps the hot water expansion vessel might need recha...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

Hi all, just wanted to share an update on my ASHP journey and get some further views. I mentioned that when I first moved in to the property the pre...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

My Teardrop icon is permanently visible but the temp on the left for me is always moving to reflect the current flow temp which mirrors the ideals of ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

To be honest I'm not concerned for myself but as I've got family staying at the moment I wanted to be a bit more diligent at keeping a slightly more r...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

@benson hi there. My aim has been to try and keep the tank at or close to 55 a few times a week so that it keeps the legionella danger zone out of rea...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

@cathoderay yes I kept touching the radiators every few mins as they got colder and colder during the DHW cycle. They then, almost instantly, became *...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

  Not at the moment, thank you. I'm still not quite sure of the tolerance point at which the under 5 degree rule kicks in a reheat for the DHW ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

@cathoderay @jamespa I did a controlled experiment this evening: Manually turned on DHW to heat to 55 degrees It took 80 minutes to heat the tank...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

Thanks @cathoderay - my understanding too, although I take the petrol pump to mean the compressor is running to actively heat whatever it should be. A...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

Something I've never been sure of is whether the hot water 'squiggly lines' should always be visible even when you want space heating active. I unders...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea R32 Monobloc MHC-V12W in 1989 Detached House: Noise from Pipes/Airing Cupboard, DHW Schedule Not Always Heating – Advice Needed?

@jamespa @cathoderay it appears that it's only at the very end of the DHW cycle that it happens. I've only noticed it the last 2 days as I've been her...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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