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Last seen: Apr 20, 2026
@jamespa Thank you again. In that case, that is the first thing I will try. This tank is located in an attached pump room and insulated, but it wi...
@jamespa Thank you James. One of the most effective changes that I could make, is to reconnect the 3 way valve to the top left connection on the vol...
@jamespa Hello James. Thank you for the new comments. Dealing with new questions first: My Ecodan spec is an EHSC VM20.UK I had previously obt...
@jamespa Hello James. I am a little "under the weather" literally and metaphorically, so delayed response. 1 - The approximately 2m of 25mm pipework...
@jamespa There are two 22mm flow and two 22mm returns shortly after rising from the heat pump where 25mm composite material pipework is used. I think ...
@jamespa Hello James and thanks again. The rads are connected in parallel and there are two runs of 22mm running down the sides of the house, in the...
@jamespa Thank you James, both for the comments and removal of my post made in error. Before answering your questions I think I should say that the...
@jamespa Thanks for your comment James. Of course you are correct and I think I was suffering a little brain fog in suggesting that the pumps were bot...
With the input from @f1p and @jamespa I am persuaded that my problems are all related to low available flow rate, particularly as I have a record of a...
@skyecraig Many thanks. Could you please describe where we are after carrying out any mods and what is necessary to restart?
Back working again now and problem was air in system. Flow rate is 17 l/min Answer to question re flow rate put to Mitsu UK (Portugal is useless): ...
Latest Posts
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RE: Renewables & Heat Pumps in the News
@editor, I hear that too. I can confirm that out of ...
By ASHP-BOBBA , 2 hours ago
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End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
As many of you know, our Global Energy Systems heat pum...
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@derbygraham fully agree with James, and it’d be good t...
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RE: Indevolt Batteries UK Support & Info Thread
Finally got around to installing and setting up the Sol...
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Unfortunately its a function of the physics. Max heat ...
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RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
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RE: Electricity price predictions
@old_scientist We are a low mileage home, so bulk of ou...
By ChandyKris , 5 hours ago
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There are just too many unknowns for me to comment on p...
By Transparent , 7 hours ago
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RE: What is the main ‘dictator’ of Agile’s unit price?
@toodles I keep an eye on wholesale prices and energy m...
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RE: Brand and installer questions for ASHP
Strange, perhaps it doesnt use modbus which the third p...
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RE: Upgrading my system, how far do I go?
For comparison, my PW3 with 11.04kW inverter, will char...
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RE: Changes to Tesla Powerwall Charging Regime?
Elon gate - legendary! I take my hat off to you @toodle...
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RE: Mitsubishi Ecodan not good enough ?
Thanks @goody, appreciate the feedback and sorry you ha...
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RE: Minimum and Zero Disrupt Heat Pump Installations
True (first sentence) Thats the reason to consider th...
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RE: High air source heat pump running costs – Vaillant AroTherm Plus
Quite right. I was using a rough guesstimate of doublin...
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RE: My Grant R290 9kW Heat Pump Installation
Again, really don't know how accurate this is! &nb...
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RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
@toodles The whole scheme is a shocking waste of money....
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RE: Anyone concerned about GivEnergy?
Many thanks for your, and the subsequent, answers tk qu...
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
Yes, and these guys would probably be my preferred inst...
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RE: Hot water tank lose heat rapidly on random days
@jamespa Hopefully their reasons are well intended! ...
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RE: Ecoflow UK Support & Info Thread
As mentioned above, we’ve got our full review of the Ec...
By Mars , 3 days ago
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RE: Say hello and introduce yourself
@sonosppp welcome to the forums. I see you've posted in...
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RE: Guidance with installing a new heating system
@bobflux Great, thanks for the advice. The pipe has an ...
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RE: Daikin Altherma 3 LT compressor longevity question
@optimistic-optimiser I have has a Daikin for a few yea...
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RE: UK DIY Battery: SEPLOS 48V 200Ah x2 + Sunsynk 8K – Safe Installation for Garage Conversion
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