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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 8, 2025
Topics: 17 / Replies: 2808
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RE: Totally bewildered with my ECO4 heat pump installation

Ok see my answer above re the readings. A heat pump is in terms of its function just like a boiler. It heats water which circulates in your radiato...

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

I suspect this is target dhw temperature and current dhw temp,erasure.

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

I am sorry to hear about your problems. I know nothing about ECO4 but do know something about heat pumps which should be a factor of 2-3 cheaper t...

8 months ago
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

Please thank @judith who posted this initially!

8 months ago
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

I have now read this in full. Very interesting and logical. One of the better papers I have seen in relation to ASHPs!

8 months ago
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

@judith Thanks for posting these, I have skip read both and intend to read them fully. They both look to be interesting and have some useful insight.

8 months ago
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

Perhaps. My 200 sw m 1930s retrofit with fabric upgrades of various quality at various times has a measured loss (from gas consumption) of 7-7.5kW. ...

8 months ago
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RE: What to Expect During Your First Winter with a Heat Pump

Just to put the other, more positive side of this argument, I have now had my heat pump for just over a month and, because the temperature has been al...

8 months ago
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

Well in fairness it's his job! No need to answer the questions btw, you could as you say just leave it to the installer.

8 months ago
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

Worth measuring, some ashps have a temperature offset setting which could be fooling the app. Also worth measuring the other two ports on the llh. ...

8 months ago
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