Hello,
I have a glow-worm ultimate 50FF boiler that had stopped igniting. I contacted British gas who for a fixed price attended to repair the boiler. The engineer found that the bearings on the fan on top of the unit had dried up causing the fan to seize. He sprayed the bearings with WD40 which got the fan running. As WD40 is such light oil is this a good long lasting fix or would you have expected the bearings or fan unit be replaced? .
Thanks for any advice