aaah thanks alot
that answers it then cos before fan was fitted boiler used to light, go to full flame for about 30 seconds tops then extinguish
thankyou for all your replies
so where is it then cos i recently had fan changed and boiler serviced and there were no pipes coming from fan, flue or anywhere as far as i could see and just wondered if it uses a different method of proving
or do you not know either??
hi i am trying to understand my boiler and the manual isnt very helpfull, boiler is a glowworm swiftflow 75 and doesnt seem to have a aps what does it use for fan proving???
cheers guys 8)