Right. My machine was not getting hot and the 'empty container' light kept coming on even when the container was empty.
Firstly unplug the machine from the mains electrical supply.
Look at the back of the machine. If there's no obvious button to press them you need to remove the large metal cover in the middle.
Remove the 12 star drive screws and gently lever the cover off using a flat head screwdriver. 4 of the screws at the bottom have a black sealant on them ignore this and just remove the cover.
Once the cover is removed you will see in front of you a square metal box approximately 6 inches square held on by 2 screws at the top. On the top left of this box you will see 2 greyish wires connected to a small black plastic electrical connector. On the back of this connector there is a tiny red button. Push this gently (it hardly moves) and you will hear a faint 'click'. You have now reset the trip switch.
Take the opportunity whilst the cover is off to remove and fluff etc with the vacuum cleaner and replace the cover and screws.
It should be working normally now.
Congratulations you've just saved yourself over a hundred pounds in repair and call out fees.
Griff
February 2010