I have a gloworm back boiler with pump assisted CH and gravity fed HW, open vented with f&e tank. The boiler was replaced 5 years ago with no problems until!!!!!!!
After having the system drained to fit a new HW cylinder the HW no longer works. A plumber came released some air from the heat exchanger it work for 2 days, came again worked for 4 days.........cold again now. This plumber suggested if it went again opting for a fully pumped system to correct the problem. I know the existing pump is working fine because the radiators including downstairs are always fully heated and the system was working fine before the new cylinder was fitted. The pipe into the exchanger is cold I cannot trace it back far because the pipes are boxed in. The open vent is clear of the water level and no warm water in the tanks the water level was slighty low but topped it up a little.
I have, very reluctantly, called the plumber who after all fitted the cylinder to come and have a look (who claims to be Corgi registered in his advert but openly admitted when I asked him to service the back boiler that he was not) He claims it is NOT an airlock and that the 3 way valve that is situated in the loft needs replacing and he will pop along in the morning! even after I told him twice that some air had already been removed and had temporarily fixed it, he stilI insists this is not a problem with airlocks. I cannot find a valve in my loft or in the installation manual, and would a gravity fed system have one anyway? But what would I know I am just a 60 yr old woman trying to make sense of this.
My f&e tank is also lined with white slime like wet chipwood wallpaper surely this cannot be good should I clean out the tank?
Can anyone suggest a way of getting the air out of the coil I miss my constant HW in the winter PLEASE CAN ANYONE HELP.
Thanks
After having the system drained to fit a new HW cylinder the HW no longer works. A plumber came released some air from the heat exchanger it work for 2 days, came again worked for 4 days.........cold again now. This plumber suggested if it went again opting for a fully pumped system to correct the problem. I know the existing pump is working fine because the radiators including downstairs are always fully heated and the system was working fine before the new cylinder was fitted. The pipe into the exchanger is cold I cannot trace it back far because the pipes are boxed in. The open vent is clear of the water level and no warm water in the tanks the water level was slighty low but topped it up a little.
I have, very reluctantly, called the plumber who after all fitted the cylinder to come and have a look (who claims to be Corgi registered in his advert but openly admitted when I asked him to service the back boiler that he was not) He claims it is NOT an airlock and that the 3 way valve that is situated in the loft needs replacing and he will pop along in the morning! even after I told him twice that some air had already been removed and had temporarily fixed it, he stilI insists this is not a problem with airlocks. I cannot find a valve in my loft or in the installation manual, and would a gravity fed system have one anyway? But what would I know I am just a 60 yr old woman trying to make sense of this.
My f&e tank is also lined with white slime like wet chipwood wallpaper surely this cannot be good should I clean out the tank?
Can anyone suggest a way of getting the air out of the coil I miss my constant HW in the winter PLEASE CAN ANYONE HELP.
Thanks