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: Jul 9, 2026
This just posted by Byline Times:
I used to (and still do to some extent) have "water flow" noise in my pipes which made me turn down the circulating pump at times, and I guess this i...
@editor The trick to an inside unit installation is to put it in someone else's house 😉
My parameters are: 42 00 = 0 (so the next three values don't matter, and they are the default values...) 42 01 = 3 42 02 = 5 42 03 = 3 51 11...
@damonc The only time the circulation pump on my HP runs 24x7 is when it's in "frost protection" mode i.e. OAT goes below 3C, when it stays running un...
@damonc I was refering to the 'standard' energy sticker that comes with the HP which I think indicates (for my 10kW Grant) that output rating varies b...
@steam-powered Hi - for 'power consumption' I use the '01 06' value (from the controller), which is in units of 100W, but most of the figures presente...
Hi, I have a Grant 10kW (nominal 9kW for the UK), which is, I believe correctly sized, but this is a retrofit on a 70s converted bungalow, with radi...
I've been following this thread since it began, and it's very disappointing that the installers, and follow-up trade still haven't sorted your issues ...
@grantmethestrength With respect to weather forecasts, I used to have my "DHW hour" fixed at 3-4pm, for obvious reasons, but have changed it to look a...
If it was working okay last winter, and not this, then implies something in the set-up has changed, or something is broken (but if that was the case I...
Sorry, no. My Grant has only died once and that was me causing the RCBO to trip. If the fault reset didn't work (and assume you also tried the all-pow...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
Volumisers are normally plumbed so that they are in the...
By JamesPa , 2 hours ago
-
@toodles possibly. The £9k labour charge for 4-5 days w...
By AndrewJ , 7 hours ago
-
RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 11 hours ago
-
RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 1 day ago
-
RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 1 day ago
-
@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 1 day ago
-
RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 1 day ago
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 1 day ago
-
RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 2 days ago
-
RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 5 days ago
-
RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 5 days ago
SPONSORS
