THERMISTOR`S all working as they should very strange this but since i posted question ive fitted a new heating cut out pipe-stat which was in series with my thermocouple and it seemed ok, but did go out once last night, problem is the ohms drops like mad when the boiler`s cold and fires up just for water, if it drops to much gas value pops out, if it does it again im going to install a 2ohm resister inseries and if pilot did go out for any reason it would still cut the gas valve off and would solve the problem to. what ya think ? ps thanks for your reply.
paul.
February 2007