The rattling noise is the fan located near the motor. If you open the door and pour water in the water collector hole (located towards the bottom left corner of the machine) you should notice the tank fills up. If not the pipe is blocked. If it does fill up, the water fault may be the condenser (attached to the air filter) Make sure it's not clogged up with cotton. There's a good chance your fan isn't circulating the air around the machine, so you'll find your clothes come out warm but damp - its the air flow blowing through the condenser that cools down the hot air to water that drips down to the tank through a series of pipes. I don't think it uses a pump, but does use gravity. Hope that makes sense ; )
BIG DAWG
February 2010