Whirring noise when bolier comes on?

Sounds like your bearings are dry, if the fan was removed and turned upside down and the tinyest squirt of WD40 was put on the bearings without going all over the coil, I found this solved it for my ultimate, Heres the snag you have to be CORGI registered and it will cost you approx 120.00 plus fitting, and it could possibly be solved with a squirt of oil.

CJ
June 2008

fan bearing maybe going.

you need corgi to access the fan as its illegal for you to access the flue chamber.

sonray heating
June 2008