Hi my blower only works on 2 & 3 with the dial and 4 with the button, 0 & 1 setting is the same no air flow but slight noise from motor area. I have taken out heat resitor and i think its working as it gets hot, if i unplug it the fan only works on 4 with the button. I have also checked the relay (the blue one) if i take this out only works on 4 with the button. and i have taken out the controls and cleaned the contacts with cleaner still no joy, i have two spare 240c thermal fuses if i need to change it but like i said it gets hot so im guessing it still working. I have looked through old posts but they all seem to have different simtoms, any help is very greatful.