Hi I really need some help here. I recently had to move some rad pipes in my bathroom. I drained down my system (open vent gravity system with Baxi bermuda 551 back boiler) I refilled the system and bled the rads, reignited the pilot light and then switched on the heating. The boiler fired up for about 2 mins then switched off leaving just the pilot light on. Tried the hot water and the same thing happened. i've undone the small screw on pump and spindle is spinning freely. If pump is not pumping would the spindle still spin? Could it be any thing to do with the motorised valves? Or is it a boiler problem? If its an airlock how would i get the air out other than bleeding rads and pump? Could it be that the new pipework in the bathroom is not connected to a rad yet?