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how can i fix my vokera 20-80 RS flowmatic combi-boiloer?

when i switch the dhw or the heating there is no cumbustion in the main chamber, the pilot flame is on and the problem is intermitent
daniel ling, August 2007
sounds like a sticking air pressure switch located under cover on the top RH side if boiler starts after giving it a gentle tap there then you will need to replace the air pressure switch comes as a kit

K Todd, August 2007
link Click here to see other fixes for Vokera 20-80 RS.