Hi I have a Vokera option combi boiler, which seems to be working fine but it for ever leaking water from the external pipe outside.

Any body help? is it the heat exchanger? as my CH and warm water is working fine

Adam, August 2009

could be heat exchanger burst internally. check the filling loop is off completely and disconnect it to be certain. to test if it's the heat exchanger turn off the cold water inlet tap and drain some water out of the system. if it doesn't move then that proves that the heat exchanger is faulty

Ian, August 2009