Baxi 105e flame and flue light flashing together

[Adam75]

I have a flashing flame and flue light. It started on Sunday re occurred on Monday and today it’s happened twice. Resetting the boiler gets rid of the flashing lights and the boiler runs.

Reading the various threads it seems that a flashing flame and flu light can mean either faulty fan, fan pressure switch, or the PCB.

Is there a way to easily diagnose which one it might be?

Three weeks ago, I replaced the heat exchanger o-rings as one was leaking. Also very occasionally the shower water smells a bit funny (according to my daughter), I’m assuming this is the diverter valve getting stuck so a little bit of radiator water is getting mixed with the shower. Hopefully an unrelated issue to the flashing flame and flue lights.

Thanks

 

[denso13]

Is there a way to easily diagnose which one it might be?

Not really, no, it'll need a Gas Safe person to investigate and repair.

 

[gas112]

two flashing lights on a 105 is a new board required 99% of the time .
No the rad water cannot mix with the water coming out the shower she must be smelling the drains or something else

 

[Adam75]

Thanks I appreciate I can’t touch the gas parts.

Typically the boiler has been fine since I’ve ordered a PCB!