baxi 105e when should the fan cut off ?

[micpwelsh]

Ive just repaired my boiler (thanks to diynots help ) i changed the pcb and air pressure switch ( whitch was second hand ) . Before it broke the fan stopped the same time as the flame but now the fan runs for an extra 10 seconds after the flame has stopped, whitch is normal ? (could it be a faulty air pressure switch ?)

 

[Vic Spanner]

Fan should run for 9.7567384895756 secs after flame finishes, So i guess yours is now ok.

 

[micpwelsh]

is that a guess ? or are you really clever lol

 

[gas4you]

Fan should run for 9.7567384895756 secs after flame finishes, So i guess yours is now ok.

Not as clever as he thinks he is.

It is actually 9.7567384895757 secs

 

[micpwelsh]

lol , but does it matter if the fan stays on longer than the burner ?

 

[gas4you]

I would expect any boiler fan to stay on slightly longer so it removes all the POC from the boiler.

 

[namsag]

Would imagine it is Also used to remove excess heat same as worcesters do

 

[micpwelsh]

thanks , do you people ever get time to do work u get paid for lol