the heatihng is very intermittent. Most of the time we are getting heat from the bathroom radiator but nowhere else in the house. the rads have been bled and there is no air coming out just water. we are getting hot water ok but the heat is just not travelling downstairs. then other times it is working ok. the bleeding valve has snapped off the radiator in the living room so i cannot bleed this on - do you think this is the cause ? We have only got 5 radiators in the house, 3 upstairs and 2 downstairs
