I have a Glow Worm MK2 boiler. The problem I am having is the boiler is not activating on its set time. The pilot light is on and the only time the boiler starts up is when it get beneath the actual boilers per set thermostat reading (this can be set between -10 and +10 degrees) the it will only start up for about 40 seconds. I think this so the actual boiler dos not get too cold. I was thinking that it might be the motor, because if the motor is not turning would that cause the water not to be recycled thought the system. Please help 
