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Crap, I did it wrong. I didn't select 17 first to get into the settings. My bad lol When I just tried it now anti cycling function was on. D40 was 57 d41 was 57 too. Shouldn't the numbers be different.... Didn't get d15 because heating went off. Heating went off while in anti cycling mode...

Sooo had heating on tonight. Couldn't figure out difference because when I went into settings d40 and d41 and selected nothing happens. Think it won't allow me to see while boiler is on and I have heating on. I remember seeing the power outage at 18kwh before. With 7 rads in flat and all...

I will do. Think new rads will do world of good though

Just tried bleeding, no air. Wanted yo double check colour of the water again. I did my rad which has the cold spot and one of in kitchen. This is water that came out. No brown at all cloudy yes, I wasn't expect it to be super clear

I'm not entirely sure I need a power flush at this stage. I think best way forward before spending that kinda money, see how it goes with the new rads next week, in meantime keep eye if I use heating before new ones are in and see those temps you suggested. I do remember though when I bled the...

Yeh, you're right. Firstly thank you for you routine replies. They are really helping. The flat I'm in was huge house converted, thus was done in 1990 but the actual house was built back in 1880. The pipes in my flat are at least 34yrs old so powerful flush could be dangerous as this may be too...

Nope lol. Won't trust myself to try that lol. I'll report with update when I next use my heating with the info you suggested. I think overall the boiler is working as it should, just maybe me being curious. But for sure with new radiators that will clear the potential sludge in that one rad...

Well thank god these rads are going. Just spoke with my plumber, if there is sludge in the rads... Removing them will take it away as most sludge settles in the rads as opposed to the pipes. So power flush isn't included in the quote to replace the rads. Will the air have settled in system...

How could I tell exactly? No idea if it was flushed through when boiler was installed, there was plenty of air trapped in all the rads when I bled them, the air hissing out went on for well over 30 seconds at least, possibly more.

I'll do that next the heating is on. And report back. It's about 17c here, a d flat feels warm... So doubt heating will be on over next few days, don't wanna run it just for sake of this cause bar this cycling function everything working fine. Flat feels warm, rads heat up.... No error codes, so...

Also it seems there was a heat plan or something on this boiler with previous owner, so was definitely maintained properly. (The flat was left empty for about 6mths before I moved in, during winter and early spring I may add which caused air build up I suspect) s So can't imagine the plumbing...

So I just go into installer settings while I CH on and check the info. I just don't wanna touch anything to change things. So just go into settings and select d40 and d41 and note down the temp numbers?

Funny, something odd just happened. As I'm talking about all this... The company who installed the boiler in 2022 contacted the agent who I dealt with when buying the property explaining a service is now due and to have it sorted soon to keep warranty intact. They obviously contacted previous...

It heats around the outside but about a gap of like 30cm in middle doesn't warm, after heating on for 2hrs and it's barely luke warm. Definitely something there. It was serviced last year. It'll be serviced next week along with the rads being changed. I'm sure he'll flush it out prior to...

I only moved into property July this year, so no idea what was done previously. There is magnetic filter there, gold brass one. It would legally need to have one as from July 2022 they were a must on new installs and this boiler was put in Dec 2022. I never ever add wet clothes on heater, never...

Magnetic filter are a must on all new boilers installed from 2022 onwards. This valiant boiler was installed Dec 2022

I wonder if that one rad that is ice cold in middle has some sludge in, which could also effect the cycling function? Also if notice in settings the boiler is at 18kw, saw it while filtering through to get to D2

My radiators look about 15yrs old and about 3 or the have some rust around the edges. I assume if there is anything in there the plumber will flush it prior to installing the new rads?

I live in flat with 7 rads. All have TRV minus one, but obviously these are all due to the be changed next week. I can't imagine that there is sludge because all rads are boiling hot, there was some air in them but they've been bled. The only radiator with cold spot dead in the middle even after...

But then 7mins.... That's enough for rads to rapidly cool down as it not currently circulating the water to the rads. Does all this indicate something could be wrong? My plumber will be here next Tuesday so he'll service at same time. But is there anything I should bring up? I know this...