I have a Glow-worm space saver 45-60 boiler. The pilot light is on but it won't "fire-up" for more than a few seconds, as it usually does, to provide heating and hot water.
If the boiler does come on to full gas even for a few seconds then the problem will be elsewhere.Check that the pump is running and that the heating header tank is full of water.If it is empty push the arm down to refill the tank and the boiler should then come back on and stay on.
