heating not working right on worcester 240 combi RSF?

same proublem as dan

kev
December 2010

Heating goes on then after a min or so the boiler goes off and on with a clicking sound like its trying to start up. After 15mins or so the problem goes but it starts again when heating needs to go on with room temp. we have no problem with the water, and the boiler fan is working. anyone out there to help please? Thanks RJ for your reply but it only started playing up this year. some boiler man said the bit coast £21 but i forgot the name of item he said so hoping someone here will say the name that will rings the bell. he said i could fit it but they charge £130 so £21 is better then £130 as not playing with the gas

dan
October 2010

thank you for your reply. the only thing it never did that in the 4 years we been at this house. Is there anything we can do?

dan
October 2010

This sounds like the boiler is circulating the hot water away from the heat exchanger this normal for all low water content boilers.

RJ
October 2010