Combi wizard needed!

[ArtfulBodger]

I installed my Ariston micro 31Kw combi last December and its worked perfectly ever since ..... until 2 weeks ago when it lost its pressure. Its always been on exactly 1 bar until it dropped to .5 and stopped working.

When I repressurised I bled all the rads, there were no obvious leaks anywhere and the PRV had definitley not operated. Now its losing about .5 bar every 2 days, although the rads are not losing water.

Nothing has happened recently, no nails through the flooring etc, in fact no work whatsoever.

Although I'm corgi registered I'm not exactly an expert on combis and so would appreciate some advice. The boiler is still under warranty, but its difficult to prove thst I don't have a leak in the pipework.

Any help would be welcome.

Cheers
AB

 

[ratonnastick]

keep looking its leaking somewhere

 

[ArtfulBodger]

Yeah, just trying to kid myself! OK then, anyone got any experience of leak sealers? 'cos I'm not taking up the new laminate and carpets - cheers

 

[ratonnastick]

See post Quick fix for coil in hot water cylinder leak to see what we think

 

[breezer]

See post Quick fix for coil in hot water cylinder leak to see what we think

or just click me

 

[ArtfulBodger]

Point taken, but the idea of lifting all this stuff thats been down for 5 months now is too much to bear!

This is what I was going to use, Fernox say its ok! in fact it seems designed for specifically my problem http://www.fernox.com/?cccpage=super_leak_sealer&sub=5

Dunno how to put links in!!

 

[breezer]

Dunno how to put links in!!

you mean like this ? then see as mentioned, 7th post down

 

[weargas]

aristons have a penchant for leaking from the main heat exchanger unions. Because ariston combustion cases are probably the best sealing cases in the universe, a leak may never drip openly. Open the case and run the ch because it may only leak when hot.
It's worth a look.

 

[ArtfulBodger]

aristons have a penchant for leaking from the main heat exchanger unions. Because ariston combustion cases are probably the best sealing cases in the universe, a leak may never drip openly. Open the case and run the ch because it may only leak when hot.
It's worth a look.

That makes sense and I will try it. Just in case it seems ok and because I have now learnt how to put links in, whaddya think of this stuff

 

[breezer]

because I have now learnt how to put links in, whaddya think of this stuff

thats the same stuff you asked about earlier

 

[ArtfulBodger]

because I have now learnt how to put links in, whaddya think of this stuff

thats the same stuff you asked about earlier

I know, I just wanted to try out what you said

 

[croydoncorgi]

Leak sealer works best on small leaks.
From your description, your leak is quite big and the fact that it's happened suddenly suggests it may get worse!
Have you checked inside the combustion chamber yet?

 

[ArtfulBodger]

Stripped the boiler, no leaks from the primary HE. I thought I'd also check the burner pressures at the same time, went to do a tightness test & undid the screw from the test nipple at which point it sheared off. Fantastic, now I have leaking pipework and no hot water or heat until Transco turn up.

Anyway, today I injected some LS-1 into a rad and repressurised and so far (fingers crossed) everything seems ok.

Time to get this place sold I think.

Thanks for all your help.

 

[kevplumb]

could always try leak sealer in the gas meter or isnt that allowed