We've got a traditional boiler and we do run off a water meter. Pipe runs are not short - the mains feed to the kitchen tap was actually lengthened two years ago when we had a kitchen extension built.
There's a circular dial to the right of the front panel, which I'm assuming is the stat control. At the 3 o'clock position is a dot that is supposed to mark the most efficient setting. We run it slightly lower than that, so I'm assuming we're not running it too hot. Stumped!
This is the only thing I thought of, but if the pipes do run close enough for this to happen, I guess it should happen (maybe to a lesser extent) all the time....
Our boiler is overheating and to-date the engineers called-out have failed to identify a problem. Boiler thermostats have been changed and also we've had a new pump fitted. The wierdest thing is that when it happens, our mains tap runs hot for a few seconds. Any pointers on the overheating and...