its going to be gas valve this does pilot stay lit at all.u should be able to adjust pilot at gas valve.is their gas at pilot is pilot touching thermocouple.is their a interupter on thermocouple.
paul
March 2006
On some boiler yes but you dont say what your boiler is?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.