Report "heating if off My Glow worm Swift flow 100 combi is playing up. Would not fire up yesterday even though pilot was lit. I found that the fan was stuck, gave it a flick with a scewdriver and off it went (bearings a little noisey). Lubricated the bearings and it now sounds like a Swiss watch and we have heating and hot water. Only trouble is it runs continuously (probably the reason bearings got dry) Am I looking for a faulty switch ?"