you don't help us we can't guess. one.
you say fan won't start, then you say potterton getting no power. two different things. is there power to boiler? or just no power to fan? we can't guess on that info.
plumber
February 2007
Potterton Profile 80e is getting no power.
DAVE
February 2007
is the fan getting power to it. may be jammed
hi-spec plumbing
February 2007
I can answer this question...
Potterton Profile 80e fan does not start,what could be the problem?