ravenheat rsf100et no hot water or heat?
i came to fault find on this boiler, pump runs, fan runs, pressure switch ok boiler lights on pilot light and maintains but from this point will not open main gas valve.have checked resistance to both coils on gas valve and found them both ok.this would normally indicate a faulty ignition pcb but i have replaced this with no change.before i supply any more parts for this boiler,any input would be helpful
clem., September 2009
