hi any ideas fellas my boiler is in working order but after about 5 mins it starts making a slight puffing noice like a steam train this disappears after about 15 mins i was advised it was probably due to a fault on fan 260 to replace but the plumber didnt sound 100% certain lot of money to spend anybody had similar faults cheers

richard johnson, January 2008

this will not be your flue fan more like limescale in heat exchanger surgest power flush or live with it.

heating doctor, January 2008