Hi doobie and welcome to CS.
Because it has just had water placed in the tank, the first thing that it need would to do is prime the pump and pipes. (And probably the thermoblock too). Priming is a fast, sharp maybe rapping-like noise. Like a longish fast door knock maybe ?!
That will be noisey but how loud is loud to you? Its impossible to know without a reference point.
Brewing/steaming/hot water sounds like a slower, lower thump (compared to priming).
The cup heating area (a.k.a. the top) is heated passively from the plumbing and thermoblock. Its unlikely to be overheating.Originally Posted by 434848454E42270 link=1324876792/0#0 date=1324876792
The red light means its heating. Its goes out when ready. Then you can turn the centre knob to left for steam or hot water, or right to brew. Thats when it makes the slower thump pump noise. When you turn it on and it s heating, the knob should be "upright". Water should not come through until you flip it left or right.
It all sounds normal to me.