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Last seen: Aug 26, 2026
This system has a 120ltr Gledhill IND vented cylinder with no expansion vessel on the water side and a tank still connected in the loft, so ok, its an...
Our client had an Ecodan with an official Mitsubishi cylinder installed 7 years ago and never had a problem until 5 weeks ago, to add a bit of context...
@jamespa oh I didn't hear about that. So in this case it was even worse as this is a retro - retrofix
Question to all: Has anyone ever been told they must shut down their ASHP hot water cylinder due to danger or compliance? Now we all know someone tha...
@matban If you have to concede and I am not saying you should but for less fuss if thats what you would like? If you do, reverse the offer, tell them ...
@terry1812 James is correct, the ACH are often the largest factor and can change the heat loss by a 1/3. We design often based on 1, it takes experi...
Just to add to the F8 non existing code, in the book is all of the blinking codes and could be worth double checking it not trying to display a P8 whi...
@editor Pages 59-74 for all Error codes and Request codes in the attached link, F8 is not showing as I think it is a shadow code related to P9. We hav...
@hjd F8 is uncommon and could indicate incorrect heat exchange due to a lack of flow or a faulty sensor, if you think this is just happening when it g...
@davidnolan22 I genuinely do not know the answer, unless your home is 500m2 I doubt you need that many pumps and there would still be a better way to ...
@jamespa Oh, I know some that are good and some not so. I am excited about this association and I am hoping it will work, it would be my pleasure to...
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Degrees of Separation
Latest Posts
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RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
By JamesPa , 35 minutes ago
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Never assume, it makes an ass of u and me! OK, tha...
By JamesPa , 59 minutes ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 3 hours ago
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RE: Is it the house or the equipment?
@springswood We have two Daikin single split A2A syst...
By Rob of York , 4 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 1 day ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 1 day ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 2 days ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 4 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
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