I had a similar problem and found the previous answers helpful but not quite as my machine.
I think there must be different 447 models - mine has the two heat settings and is the 6Kg load. Below is how I finally got it working
(No liability accepted - a qualified electrician should be consulted)
If you take the lid off ( 3 screws at the back) and looking at the machine from the front the electrics are on the left hand side at the rear of the machine.
On the far left there is a terminal fastened to the casing. This should have the earth (green) from the plug and the other earth (green & white)
To the right of this terminal is a block of 4 plastic terminals.
The leftmost of these should have the brown from the plug and the white and brown
The next terminal has the blue from the plug, the pale blue from the reset switch and the blue
The next terminal is spare
The last terminal has the black and white and the black to the thermostat
Moving to the element - there are a total of 4 terminals but two of them are joined.
Looking at the element as it is fastened to the back panel of the dryer.
The leftmost terminal has 2 connections. This should have the black to the termostat and the black to the heat setting.
The next terminal has the red to the heat setting
The terminal to the right has the two elements joined and this has the pale blue from the reset switch.
These details are provided for information only and no liability is accepted
Trev
April 2008