Hiya
there is usually a reset button it depends how old the combi is the newer ones are incorperated in the on off switch the older ones have an unmarked red button either on the top of the boiler or if you take off the front cover it will be on the box where all the controls are either on top ,at the back or underneath , it will be a red cross type button and will just need pushing in to reset it
steve, May 2005
