Has the pump got a removable screw at the front of it,is so remove it and run the boiler,you should be able (with the use of a screw driver to feel the impellor on the pump spining,if it is the pump must be ok,
Can anyone help please,when I run the hot tap the boiler lights and works ok,but when I turn the tap off the flame goes out but the boiler and fan keeps running.The only way I can stop it is to switch off the fused spur( that feeds the boiler ) for a second and that resets the system.Thank you Denny