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Last seen: Jan 7, 2026
Hi, I've got an ecodan. The whole electrics and DIP switches are pretty complicated for a homeowner. Are you able to speak to the people that installe...
They are putting in a new low loss header and a zone valve controlled but the FTC that will close the secondary flows during defrost
Yeah, it’s all very complicated. My installer has put over 1000 Ecodans, so I’m leaving it to them. Both they and the mitshi engineer said my secondar...
Did you self install it?? Why not get installer involved
@gary i'm not sure what it will do, but Mitshubishi engineer said the 11.2 ecodan needs to have the secondary flows closed during defrost. I was / ...
@harriup Hi, just picking this up again. My installer has been out and the flows are going through the UFH slab and rad circuit on defrost when they...
@tallmarc it's exactly the same with the mitsubishi ecodan. i actually got their engineer out who just stated the figures in the brochure were lab and...
thanks for that reply I've had the pump speed on max and it's seems a bit worse, can't be sure yet, as the compressor ramps up even harder and defro...
@gary yeah, mine is just a pipe with no volume with the system pipes coming off it, but its not part of the pre plumbed cylinder
@jamespa all good questions..... Look like I have a weekend sat in the loft again. the wife will be chuffed. Anyhow, installer coming left week....
i'd need to check. i'm not sure when the temp sensors are for the display i see in mel cloud. i assume they are the ASHP side of the header. the temp...
@jamespa no buffer, no volumiser, piped 35mm Low loss header with one feed off to 2 UFH manifolds, and 1 rad run. Total system volume I have worke...
Latest Posts
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RE: Anyone concerned about GivEnergy?
An incredibly enlightening piece on the subject by @maj...
By Mars , 26 minutes ago
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Home automation and the cloud; is there a better way?
You’ve just had a brand new system installed (heat pump...
By Majordennisbloodnok , 31 minutes ago
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RE: End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
We've started to document everything, and part 2 of the...
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RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?
So the red bars are 'DHW' and the yellow bars 'heating'...
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Its good kit the Midea and significantly cheaper, you w...
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Have you tried cutting the grid feed to see what actual...
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Contractors pack for inta antifreeze valves are around ...
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Critics and naysayers will be negative whatever the gov...
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RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
By JamesPa , 16 hours ago
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RE: Electricity price predictions
@old_scientist We are a low mileage home, so bulk of ou...
By ChandyKris , 17 hours ago
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There are just too many unknowns for me to comment on p...
By Transparent , 19 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: 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...
By Mars , 4 days ago
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RE: Guidance with installing a new heating system
@bobflux Great, thanks for the advice. The pipe has an ...
By Hamilton , 4 days ago
