WB240RSF on & off

[Graham81]

Hi There

I have a WB240RSF which is working, as in it will produce hot water & central heating. However if either hot water or heating is demanded the boiler will fire up as expected but then proceeds to drop the burners & reignite continually throughout its use. As I say the water gets hot or the rads get warm as expected, but the boiler will click away; & this is something it has only done recently. I can only think that the boiler believes that it is getting too hot for a split second because the water temp does vary as the boiler burner goes on & off?

I have a good understanding of my boiler having changed the diverter & water to water exchange in the past but cannot locate this problem? Can anyone suggest things to look for?

Thanks in advance

 

[spacethegas]

i suspect that the problem will emanate from within the combustion chamber.

=> the standard reply is to call a qualified gas guy i'm afraid.

 

[Graham81]

When you say combustion section. Could it be something as simple as the burners needing a clean etc cos I do not think it has been serviced for approx. 2 years.

Thanks

 

[spacethegas]

no.

but is definitely due a service as well.

 

[Graham81]

Just discovered something else; if the hot water is left running for a long while, like a long shower, or the heating is left on, eventually when the system gets very very hot then the boiler will stop clicking on/off & the temperature stabilizes. Does this have any relevant on things?

Thanks