depends on what part of sequence when it trips.
things that will trip your elecs are generally pump fan and gas valve.
if it trips instantly when you switch heating on etc id think pump, if its a split second later than pump id think fan and if it waits til ignition sequence part id go gas valve.
sounds a bit of a sh*tty answer but they're the major players.
iain
December 2008
howtomendit.com for free repair help, information and advice.
