Last seen: Aug 28, 2025
You’re absolutely right that during defrost the refrigeration cycle reverses, not the flow and return pipes. And yes, the cold water produced by defro...
Even though GSHPs are more expensive upfront, they generally offer a longer lifespan than ASHPs and significantly better SCOPs when well designed. @...
As far as I know (and I stand to be corrected) in normal operation, typical condensing temperatures on an ASHP are usually in the 40–60C range, depend...
@gary my Mitsubishi contact recommended you call the support line, and sent me this.
Welcome to the forums. Given the scale of your property, and the fact you have access to land (and budget), ground source definitely makes sense as a ...
@gary after a quick document scan the UD0-0 error suggests a communication error between the outdoor and indoor units, or sometimes between components...
@gary I’ll ask Mitsubishi for some insights, and hopefully they can provide some clarification. Have you called their support line?
Latest Posts
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RE: Ecodan & MelCloud scheduling
Yes, the 2 are separate. To add to the complex desig...
By HCas , 14 hours ago
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RE: Electricity price predictions
@diverted-energy so that’s where I think you are wrong....
By JulianC , 15 hours ago
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@drei has just published his full story here for anyone...
By Mars , 16 hours ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
I think there may be a little confusion in the wording ...
By Old_Scientist , 19 hours ago
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I should clarify that the FoxESS web interface is not l...
By Old_Scientist , 20 hours ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
Previous was vented and I needed a shower pump and a ve...
By JamesPa , 21 hours ago
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RE: Mitsu Wireless Controller and MelCloud
@robs Hi Rob, At the end of a note to Mitsu UK, thank...
By DavidAlgarve , 2 days ago
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RE: Why so many sigenergi installer recommendations?
@adamk Tesla is a great option, it’s also one we instal...
By SAEnergy , 2 days ago
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RE: Rodents! A word of warning for heat pump owners
Hradline in Telegraph: Brace for plague of rats after s...
By Tim441 , 2 days ago
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RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
As a potential heat pump customer, it would be good to ...
By Temperature_Gradient , 2 days ago
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RE: Octopus replacing the fixed 15p/kWh export rate with a market tracking one
@trbob I have just extracted the details for Agile Expo...
By Toodles , 3 days ago
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RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
The Ultimate Guide to Heat Pumps is less than a month a...
By Mars , 3 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor Hi Mars, We have just installed a Grant Aerona...
By GrahamF , 3 days ago
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RE: Sanity check please. Battery storage and inverter sizing.
There are MCS guidelines about how close to the edge/ri...
By Old_Scientist , 4 days ago
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RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I estimated our usage on the following basis. The mos...
By Old_Scientist , 4 days ago
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@editor Something changed in this last 12 months, they ...
By ASHP-BOBBA , 5 days ago
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RE: Does anyone have experience of a smart water meter?
Just to give a sense of scale, I've used the CCW water ...
By Majordennisbloodnok , 6 days ago
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RE: Powerwall 3 or Myenergi or something else?
We have a Tesla Powerwall 3, recently installed, so I m...
By Old_Scientist , 7 days ago
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RE: Mitsubishi PAR-WT60R-E Wireless Controller installation
@morgan They have been paired once but it was thought b...
By DavidAlgarve , 1 week ago
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RE: Isolating the system for a planned power cut
A great many ground-mounted local substation transforme...
By Transparent , 1 week ago
