I went to complete a landlords gas safety check Friday and found a couple of leaks on this boiler. One was the automatic air vent the other? See the picture. Is this the heat exchanger that has failed or just the seal? I haven't taken it apart as yet I have to report back to the landlord and give him a rough idea of cost.
Looks like its from above as others have said just needs a proper service and a new seal either way I would advise it, when the gasket goes you usually get stuff forming between he HE and the plate.
Didn't worcester have issues with water coming in so they moved the gas valve connections higher (purple wires?) so water didnt trip it and put a guard over the fan?