Baxi Combi Instant 105e flame and fan keeps swithcing on and off?

i had a problem where the fan led was flashing. at the time the fan would'nt come on. i changed the pcb and still nothing. read some info on this site and gave the flue a clean and the venture(or whatever its called). and hey prestooooo!!! i can shower again lol

i was almost about to spend huge amounts of money on a new boiler.

koray
February 2011

Have you tried disconnecting and bypass all external controls (ie room stats etc) and see if the problem remains.

I find that lots of times it is a problem in the control side if the boiler can fire away normally.

T
April 2008