vaillant combi boiler problem

[Daza87]

My sister has a vaillant combi boiler, the issue she is having is she turns the tap on,the boiler fires,it comes out hot, but then goes cold after about 5 seconds, and there are no fault codes being shown on the boiler. I am thinking is this a flow switch issue? or a thermister issue? any help would be much appreciated.


I am gas safe registered.

 

[Howsie]

Multiple threads won't help...

 

[Howsie]

In fact it'll get you banned quite quickly.

 

[Daza87]

sorry,I just wanted to make it clear i was gas safe registered before my thread got closed again

 

[Howsie]

Read the forum rules.

 

[Dotty]

Closed as per advice given previously.

Daza, you've more than 10 posts now, Pm Gas man - View Profile: gas man - Plumbing Forum | Plumbing Advice | Plumbers Forums | A forum for plumbers advice in the UK

or Redsaw - View Profile: REDSAW - Plumbing Forum | Plumbing Advice | Plumbers Forums | A forum for plumbers advice in the UK

with your gsr details.

They'll test you then give you access to the private forum where these questions can be answered safely.