i have a worcster 24i. i had the heating on using the timer but it cut out during the evening before it was due. i have not been able to turn it on since and i cant get any hot water either. there is power to the unit as i have a constant red light. the water pressure is also ok. there is no flame through the spy glass. when i try to turn the heating on it sounds like the pump is working but it is not firing up. any help would be great before i end up spending lots of money!