those cheap and cheerfull ones from B&Q) but it has a problem stay lit I have done several of these boilers in the past and had no problem what so ever, but this one just wont play ball!
When either CH or DHW is called for, the ignition sparks and the burne lites. Then after a few seconds when the spark stops, the burner goe out. Then there is about 10 seconds delay before it tries again. Thi repeats three times then the flame failure light comes on.
This problem occurs with both CH and DHW, so i dont think it will b the overheat stat coming in. I was thinking it may be the air pressur sensor if the flue has slipped out of position?
Has anyone experienced anything like this before?
Any help would be much appreciated.