Our overfow pipe releases hot water constantly. However the pressure gauge remains at 2bar, any ideas? Could it be the releif valve on the hot water system?

Marc Wigham, February 2006

When you say it overflows do you mean from the 15mm pipe that goes from the boiler to outside the house?, if so this is connected to a pressure relief valve which should only lift at 3 bar, if it is letting by at 2 bar the pressure relief valve will need to be replaced

Kevin a boiler engineer, February 2006