difference between pcb boards 9.24 heatslave

[ianfoskett]

on my worcester 9.24 the fan wont come on when you first switch it on, when you blow in the pressure switch the fan comes on and the boiler lights. it runs for about 10 mins or so then the fan goes off so does the boiler. and then wont relight for about 15 mins doing the same thing of blowing into the pressure switch. i have changed the sequence board, still the same.

should i change the driver pcb board, or am i missing something.
the boiler doesn't reach temperature, and i have checked the fans working ok. any help please.

 

[Agile]

No one this site should be giving you any advice on this problem as it involves the combustion chamber which should only be accessed by a gas registered engineer.

Ignition and flame supervision is carried out by the ignition PCB. But the problem could be caused by other things as well.

The obvious advice is to get a competent engineer to diagnose the problem for you.

Tony