i had two errors, the first was the float switch. I did the tip the water out thing, which worked for about a week, i then got a 'thermistor' error code.
I drained the machine, (run a short cycle you'll hear the water drain out, then cancel the programm by holding the cancel button after about 5 seconds, this will save you alot of mopping). Tip the machine on it's back, clean up any spilt water, then remove 6 screws from the bottom panel (not the 2 located in the centre of the bottom panel, this holds the float switch in place). Be careful when you remove the bottom panel, the float switch is attached by a wire, you need to unplug this for ease of access (remember the position of the plug as there are 3 pins and it only goes on 2 of them).
Once inside there's not much too it. I could see limescale deposits on the bottom panel, which meant a leak somewhere. It was easy to find and easy to fix. The grey waste pipe, which is grey in coloured and looks a bit like a plastic spring, had completeley deterioated. It was split in numerous places. This pipe is connected to the small waste pump and runs out the back of the machine and into the drain. I removed this, bought a new one from the local plumbers (£6) and replaced it. It's easy to remove, it's connected by a mteal spring clip one end, you just need pliers to remove it. It's held in place at the the back of the machine by a small white clip, this fiddly to remove, but needed to stop the pipe rubbing on the back of the machine. With the leak fixed, i needed to find the cause of the over heating.
This turned out to be the main impellor inside the main motor. It had seized due to the limescale build up. A bit of prodding with a screw driver, and a small ammount of wd40 and the impellor was free (you don't have to remove the motor, just free it from the rubber mount to expose the impellor). I put the machine back together, and it's now all back to normal. Took about an hour and a half, cost six quid.
Hopefully you'll catch your leak before you have a problem with the motor. Check that pipe and i bet thats your problem.
Hope this helps.
Utah
December 2009