baxi 105 flame failure

[jacob]

Has anyone come across a problem where a baxi is only working intermittently? It goes through the sequence up to sparking but the burner will not always light. I keep resetting it and it may then light & be ok for a few days. It never goes off if the boiler is left running.

Thanks.

 

[sime10]

Type of Baxi model etc would be a good start

 

[jacob]

baxi combi 105e

 

[sime10]

Sorry you did mention it, My fault

 

[sime10]

Fan working ( if not intermittently)
Maybe air pressure switch

 

[fitz1]

check your neutral aint loose.

 

[fitz1]

possible sticky gas valve

 

[sime10]

Take your pick jacob could be a few things

 

[jacob]

Thanks for the advice - fan is running ok, neutral is connected so gas valve looking most likely - I had thought it might be that but the boiler never cuts out once it is running, even when it stops & starts as it reaches the temperature. It is only when the heating is turned off & I put it on again it will not always start - is that consistent with a sticky valve?
Cheers.

 

[Baxmax]

What is the low burner pressure reading ?