i have a worcester bosch24i and every time it fires up it only stays alight for 6 secinds then goes out and when it call for hot water it repeats this over and over going out then fires up fof 6 seconds? fan pump all working fine, any suggstions please its cold in here???????????

steve, November 2010

Sounds like a Flame rectification issue, check rectification electrode and lead

Carefree, November 2010