I have a potterton suprima which is about 11 years old, it has about 5 years ago had a new PCB board Square reset button and about 2 years ago a new gas valve it now fails to fire up at all, there is a slow flashing red light and pressing the reset button does nothing it does make the occasional click but nothing happens. pump does not start either although again there has been a very short effort to start, Could this problem be down to the pump

Carl, September 2010