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my boiler is a potterton profile 50E?

the flue fan cycles ON/OFF continually and boiler does'nt fire up.If i remove front case fan does NOT cycle but boiler still does NOT fire up
RICHARD CHILDS, February 2009
check pressure switch

gasman1uk, February 2009
i have just had this problem
pcb will probably need replacing
mine did and now works a treat
nice to have a warm house and a tank of hot water again
this has been the only time it stopped working not bad for a 20 year old boiler

chris, February 2009
Google 'Dodgy Old Boiler' and you may find relevent info therein.

John B, February 2009
link Click here to see other fixes for Potterton Profile 50E.