Hi my thermostat has failed on my firebird popular 90, high limit stat keeps tripping cause water is nearly boiling, and yes my central heating pump is working fine. since its a duel stat do i have to replace the hole stat
(boiler stat and high limit stat) or can i unscrew the cover and just replace the boiler stat and leave in high limit stat or does it all come as one?
(boiler stat and high limit stat) or can i unscrew the cover and just replace the boiler stat and leave in high limit stat or does it all come as one?