Dripping overflow pipe.
I explained to the plumber that the overflow pipe from the tank in the loft was dripping at random times. He asked me if it was connected to the central heating coming on. I said not. It was a completely ad hoc occurance.
He went into the loft and inspected both the cold water and the central heating expansion tanks. He discovered the cover for the cold water tank had moved, it had possibly been touching the arm of the valve. He said the valve was fine and did not need replacing.
The overflow pipe has since continued to drip on occasion. I am not convinced the problem has been solved. I am going to monitor it for a while before contacting Homeserve again.
Risposta di HomeServe UK