can any one throw some light on how to solve my problem.
i have recently changed some rads downstairs and one in the bathroom, during decorating. i drained the system and then top it up and bleed of the radiators. Ran the heating an everything seemed to get hot. However after a couple of weeks the upstairs radiators started to get cold at the bottom in the old ones belivng because they are old again i drained the system and changed these ones too. Again topped up and bled of pump and rads. But i found i still had the probelm, i have now add some cleaner to the sysytem but it does not seem to be helping have i got a blockage or air lock??
i have recently changed some rads downstairs and one in the bathroom, during decorating. i drained the system and then top it up and bleed of the radiators. Ran the heating an everything seemed to get hot. However after a couple of weeks the upstairs radiators started to get cold at the bottom in the old ones belivng because they are old again i drained the system and changed these ones too. Again topped up and bled of pump and rads. But i found i still had the probelm, i have now add some cleaner to the sysytem but it does not seem to be helping have i got a blockage or air lock??