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is this a mid position valve if so im sure u get the 80v from the mini pcb in the 3 port valve. and in any case 80v should not power a boiler. [/youtube]

28i junior gc number 47-311-70 may have a internal filling loop, check installation instructions 13.2 commissioning

1- check boiler is correct wired . p/live, s/live and neutral 2- check all pcb molex plug connections, that are located and fitted correct (work loose) 3- check display molex j13 is fitted right way around 4- disconnect j4 plug if this brings back display , replace fan. 5- cxi/sxi/si/ci...

ps you can only fit a recommended manufactures part if that is not made anymore and you cant find it in some stores some place you cant fit any old aps.

kevd people posting are being helpful there trying to tell you that by law this part should be changed by a gas safe engineer , theres more to it than not taking a case off or my dad designed the system on a fag box in the pub 30 years ago. these old boilers have a habit of leaking fumes into...

DeborahJ you are not allowed to fit 2nd hand parts to gas appliance . just be happy ur boiler lived as long as it did and go and buy a nice new vaillant boiler. also if ur getting funny smells of the boiler call a gas safe engineer to check the boiler out asap as ther maybe fumes coming into...

I have got an old boiler admittedly but have had british gas homecare cover for years and over that time they have practically rebuilt it with spares. It has been running fine but blew a fuse this morning. I rang them and the engineer came out and changed the fuse and then started bashing...

I had a new boiler, vailant ecotec 415 in August 11. Had a chemical flush & magnaclean as part of installation and on day of installation. Boiler now making funny noise. Vailant engineer says the water in the system is dirty, possibly too much inhibitor? it's a soft of pale yellow colour and...