Biasi boiler problem please help!

[thurwood]

Turn your boiler stat down , make sure at least one rad is fully open , get some one to check your boiler's gas pressure & range rate the heating to its lowest setting , not all the rads should have trv's , you should have a room stat fitted ?? the rad in the area of the room stat should not have a trv ! boiler has its own by pass but it may not be enough !

Thanks will try this and get back soon Cheers Tamara