Micron 50ff. Seems to be same problem as others. Boiler keeps going off burner light flashing reset and it works again. Now this is happenning every day and a whistling noise coming out of flue really hard to actually get it started now. Had guy round and he said it might be the ignition probe????? Said to get one and he will try that first. Can anyone give me their thoughts on this?

Jackie, July 2011