To be honest we've had the boiler 12 years and never had any problems. Other than 2 years ago we needed a new expansion vessel. The 2Amp fuse had blown and the 3amp in the wall. Can't understand how it ran for a good hr before going off then back to f25 fault.
Hi anyone,
Well got a f25 fault on my boiler and cant seem to get rid of it. My plumber has changed the pump/ water pressure sensor/ prv/ igniter cable and ntc sensors on the flow and exchanger. It worked for about a hr then went off again with the same fault code again. Please any ideas...