Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
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...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage
This tool lets you input the makeup of your wall, ceili...
By bobflux , 6 minutes ago
-
RE: How should the Boiler Upgrade Scheme be reformed?
Yes, their gas typically costs twice ours and electrici...
By Batpred , 10 hours ago
-
Over the years, due to the non barrier PEX underfloor h...
By bobflux , 11 hours ago
-
RE: Getting closer to a finished Haier system
All the 45° elbows required for getting the primaries i...
By Singlespeed , 12 hours ago
-
RE: Tesla Powerwall (2) Calibration Cycles
@papahuhu Likewise, the main ‘extra’ relates to TOU tar...
By Toodles , 17 hours ago
-
RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
Thanks for the reference @jamespa I can't see any te...
By Transparent , 2 days ago
-
RE: battery storage without solar
Indeed, current on the grid input = current used for ch...
By bobflux , 2 days ago
-
RE: Who's your electricity provider and what's your tariff?
@papahuhu @papahuhu A lot of tears and sweat went into ...
By Andris , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
We have the same problem, 12 mature trees clip the morn...
By Papahuhu , 3 days ago
-
RE: Solis inverters S6-EH1P: pros and cons and battery options
I had a battery and inverter installed a while ago, my ...
By Batpred , 3 days ago
-
RE: Is This Initial Free Quote From Octopus Trusted Partner Reasonable?
@ltron2 The EPC on our house is A-92, however that i...
By Rob of York , 3 days ago
-
RE: Heat pump branding. Clever, contemporary… or a bit too much?
The layout is confusing - much better like this: We b...
By downfield , 4 days ago
-
RE: Is it just me, or does tradesperson timekeeping and communication drive you absolutely mad?
My experience, backed up by opinions from various frien...
By Majordennisbloodnok , 4 days ago
-
RE: Analysis of the economics of switching to an A2W ASHP compared to other heat sources
I had a meeting today with a company based out of Swede...
By Mars , 4 days ago
-
RE: Review your electricity provider
We were with Octopus in our old house and it was fault...
By ian33a , 5 days ago
SPONSORS
