Biasi m90e 24s problems

[James85d]

Biasi m90e 24s Boiler works intermittently some times it fires and runs fine but then will stop running once the stat has been satisfied and calls for heat again or run the hot tap, pump runs fan runs, you can here the air pressure switch and you can see the pin activate the micro switch just won't ignite ( no spark ), any ideas would be helpful.

Thanks
James

 

[gaspro1981]

Are you a gsre ??

 

[James85d]

Yes I am, just registered for gas safe engineers forum waiting on reply.

 

[gaspro1981]

Good stuff will be able to discuss this further in the cc as this sort info can be misinterpreted by members of the public and against forum rules