New Flame Detector?

[jmcdyre]

Hi all
Have been having problem with combi boiler (alpha 240e) where it keeps igniting and going out each time it's coming on...
recently had a service and the chap thought he'd fixed the problem, and said it appeared to be down to the flame sensor not sensing a flame so turning the gas off and trying again repeatedly, eventually staying lit.
problem is back, so before I call again wanted to ask on here if it's possible to replace a flame sensor, and if it's likely to cost much?

thank

J

 

[Boilerman2]

I am pretty certain the 240e is a permanent pilot model, therefore has a Thermocouple, this is unlikely to be causing the fault you describe
your "Service " engineer needs to think again!
This is not a DIY job as all relevent parts are inside the combustion box which means qualified engineers only!

 

[45yearsagasman]

The 240e is electronic ignition and the 240p has a perm pilot.
There are several reasons for your boiler fault, all of which require expert attention.

 

[jmcdyre]

thanks guys
yes it is electronic ignition, no pilot light
what sort of thing could it be (most likely) and how expensive!?
thanks

 

[Agile]

The flame sensor is a passive component and so does not often fail.

There is no "often" cause of those symptoms.

Each boiler has to be examined and tested to diagnose the problem.

Likely cost £80-£160 depending on the cause.

Tony