Valliant Boiler

knowledgepower1

Hello MSEs,

We have a brand new valliant boiler installed by an independent engineers in 2008/2009 and its been perfectly working since then.

Recently, I discover that it loses pressure often and always have to turn off and on two knob/pipes at the bottom of the boiler for it to get started again.
We can't locate the the installer again and we have not been able to check what the problem is for the past 3 months this problem started.

Could someone recommend a good, reliable and cheap independent boiler Engineer around East London or London generally who could check this for us.

Thanks.

newbie1980

knowledgepower1 wrote: »

Hello MSEs,

We have a brand new valliant boiler installed by an independent engineers in 2008/2009 and its been perfectly working since then.

Recently, I discover that it loses pressure often and always have to turn off and on two knob/pipes at the bottom of the boiler for it to get started again.
We can't locate the the installer again and we have not been able to check what the problem is for the past 3 months this problem started.

Could someone recommend a good, reliable and cheap independent boiler Engineer around East London or London generally who could check this for us.

Thanks.

i believe that there may be a expansion tank that needs air putting back in this happened to my dads and a guy basically got a pump and put air in and its been fine ever since they said they recommend every 5 yrs or so

gas4you

Check expansion vessel. They are a problem on Vaillant's. Usually need re-pressurising at least every 2 years. Definitely needs checking every annual service.

Drain boiler and pressurise to about 0.8 Bar

macman

Or you have a leak on the CH circuit, or a faulty PRV (usually dirt stopping it seating down properly). Have you checked outside to see if water is discharging from the PRV drain?

knowledgepower1

Guys, I know next to nothing on this boiler. I know there's always a leak through the outside pipe.

Is it possible to do this myself, if yes can you please tell me step by step.

Thanks a lot peeps.

jalexa

knowledgepower1 wrote: »

Guys, I know next to nothing on this boiler. I know there's always a leak through the outside pipe.

Is it possible to do this myself, if yes can you please tell me step by step.

If you were competent, possibly. If you know "next to nothing", then no.

macman

knowledgepower1 wrote: »

Guys, I know next to nothing on this boiler. I know there's always a leak through the outside pipe.

Is it possible to do this myself, if yes can you please tell me step by step.

Thanks a lot peeps.

Might have aided the diagnosis to say that at the outset then. Then it's the PRV (if you are talking about the overflow and not a condensate drain).
You'll need to get a GSR RGI in to change the PRV. A very straightforward job-but not a DIY one.

Mr_Ted

jalexa wrote: »

If you were competent, possibly. If you know "next to nothing", then no.

It is not just a matter of being competent, you must me qualified to work on any boiler and also need a qualification to work on pressurised systems!

Any information given here by a "qualified" person should emphasise this, even if the information is correct!

jalexa

Mr_Ted wrote: »

It is not just a matter of being competent, you must me qualified to work on any boiler ...

Technically OK if "competent" and not for financial gain but read between the lines of my post and you may see "if you know next to nothing, then no". Since "next to nothing" was the OP's expertise then the advice is clear.

Mr_Ted

jalexa wrote: »

Technically OK if "competent" and not for financial gain but read between the lines of my post and you may see "if you know next to nothing, then no". Since "next to nothing" was the OP's expertise then the advice is clear.

You are "Technically" right, but try explaining that to a Judge or Gas Safe as only a qualification will satify them if it becomes an issue?

You "may" get away with it in your own home, but even so if an issue occurs you will need good justification and evidence to verify you are "Competent"!