S.33 on Vaillant turbomax plus boiler

Joined
23 Feb 2014
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Location
Gloucestershire
Country
United Kingdom
Hi guys wondered if you could help me.

I had an s.33 status code appear on my boiler referring to the flue. The flue is not blocked and I have also changed the APS switch and hoses.

Old and new switch seem to make when blowing and sucking Into the 2 little pipes off the switch. I've been advised this could be a PCB failure.

Any help on this would be most appreciated

Thanks Sam
 
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U are working in a dangerous area and messing with a main boiler safety device u will get no gas help here you need an rgi
 

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