The problem seems to be the cold water , the pipes have condensation constantly and even with the heating and emertion on dont get warm .
There is no leak on the system as i have had this checked but the plumber cant seem to explain it any Ideas would help
Since you say that one of your radiators was taken off, it could be that when the system was refilled after this the radiators have all filled up but there may be air trapped in the heating coil inside your hot water cylinder preventing the boiler from warming the cylinder. It may also be that your immersion heater hasn't worked for a while, because it seems unlikely that both systems would stop heating the water at exactly the same time.
To check for air in the coil first of all make sure the heating system is turned off. Then find two pipes going into the side of the cylinder one directly above the other. Loosen (don't remove) the connection for the higher one of these pipes to the cylinder. Any trapped air should then come out followed by water in the same way as using a radiator bleed valve. Then retighten the connection.
Also get your immersion heater checked out. Good luck.
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