Just to update the forum on this, we have now had the gas valve replaced, and all appears well, though the engineer did indicate that the "next thing to go" may well be the PCB(!), but we are hoping that will not be for a very long time yet, as we have forked out a lot of money this year on a...
We had the fan replaced earlier this year, but the noise that it had been making was nothing as bad as this and altogether different. Try and imagine something between a bedside alarm and heavy industrial machinery.
I've now made a 10-second 69kb. wav. file of the sound but can't see a way...
No this is definitely an electronic buzzing and it's loud which sounds like an alarm clock going off. We've made a tape recording of it, (but not digitally) to play back should we decide to call in a plumbing engineer, because there is no way we can make the sound occur - it just happens.
No. Everything works fine. We've mentioned it to the service engineer who installed it, and he doesn't know what it is exactly but considers it not to be serious, just inconvenient. He's right about that.
We're just concerned that this buzzing will get worse.
We have a problem with a wall-mounted Ideal Classic SE18 combi-boiler installed in November 2004. About two months ago it started to make an intermittent very loud buzzing, loud enough to be heard from outside the house. which lasts anything from a few seconds to a couple of minutes. Sometimes...