I have a 3yr old baxi combo 105e, the problem that I seem to have is with the pressure which seems to increase to around 3 bar either when the heating is used or when the hot water is used. This causes it to discharge water out the overflow pipe. Had it serviced 3 weeks ago as I noticed that there was a flashing neon indicating a fault on the hot water sensor ( boiler kept cutting out ), also there was a slight leak outside. Thought a service would cure it, but obviously not. Boiler man set pressure at 1 bar, but this has gradually increased to 2.5 bar. Would be grateful for any ideas.[/quote]