Hello, My boiler started making this intermittent whining sound 13 days ago. Plumber came out 6 days ago and he said the fan's on its way out. Also the pressure is rising to a given value way faster than it ought to. He claimed it's not dangerous when I asked him, but don't fancy using it apart from very short periods. I'm a bit concerned it might explode. Are my fears misplaced?
Trying to get the letting company to sort it out. To no avail so far.
