CHRISX again,
I found out what I describe below too long after my original reply above to Edit it:
I don`t know how this could have happened but when I went back and looked at the Forum message what had looked like the From address -...
Fernox F3 is one of the most often recommended cleaners. Their instructions say to first drain and refill the entire system with plain water. Makes sense - you wouldn't wash anything in dirty water.
To remove hardened iron oxides and...
Thanks,
I did call vaillant, as I have an old ecotec plus, but they said no such tech available for their old or even their new boilers.
I was thinking there has to be a solution out there somewhere, hence the post, as I have searched...
From recent experience I can say that X400 is good at cleaning the gunk from a CH system. In my case, I ran the system with X400 for three weeks then drained down. Probably worth refilling with plain water, running for a short while...
My central heating system is over 40 years old. A mixture of 15 and 22mm pipework to and from the boiler (which is 15 years old), while the rads are served via microbore pipe from the two distribution trees hidden away under the back...
CHRISX - Forum email received today - it appears to come from PlumbersTalk.net / UK Plumbers Forums - This has been copied & pasted from the top of the message:
PlumbersTalk.net / UK Plumbers Forums
Chris.
Talking with one of the guys in the office about a mysterious boiler fault (runs, ignites, locks out) reminded me of an issue in a new boiler room some years ago. Three new gas boilers all installed at the same time, due to handover to...
Vaillant do a wiring center that allows different temperature control. I fitted one many years ago. Do some research with manufacturers, I'm sure a simple solution is out there. Or someone will have an answer for you soon.