Can anyone help my Ravenheat boiler will start and fire up on central heating but after a few seconds shuts down and than continues doing this, however if you run the hot water for 20 seconds and return to central heating it now runs fine until the boiler stat or room thermostat cuts in any ideas many thanks Alan.

Alan, March 2010

hi guys, bought circuit board on ebay £89.00, fitted this morning, boiler running like new, hope this helps

Richard, April 2010

Hi Alan, my boiler has just developed exact same fault, i have had a look this morning, ruled out the thermistor, ruled out the potentiometer, hot water side is ok, and like paul i am pretty sure PCB, have you cured yours yet

richard, April 2010

Hi Alan, I’m sorry but I am not offering an answer to your problem. I am just writing to say that I have exactly the same symptoms and am waiting to see if anybody knows what is the cause of this fault, all I can say is that I have changed the CH Thermister (this is the one that clips onto the vertical flow pipe on the right hand side, it has made no difference at all, I am telling you this before you spend 25 quid on a Thermister as this component is often suggested as a possible cause. I have a suspicion that it could be a fault on the control pcb (I am an electronics engineer) as once it is triggered, by the hot water being run for about 20secs, it is ok for a while..But like you, I wait in hope that somebody will have another cure, Regards..Paul

Paul, March 2010