did you have it set on highest level i.e 10 ? I did and had the same problem after it had been on for 15 mins it stopped working and F2 appeared, I checked the base motor and it did not seem to be very warm in fact not warm at all ! i checked for F2 but it is not mentioned in any of the below ... the useless Dyson manual that comes with it, this just shows how to assembly the item, no brainer, nothing about F2 codes etc Dyson website, totally useless, troubleshooting section does not explain F2 and just tries to sell you Dyson products I contacted the retailer and they said return the item, they did not know what F2 was though they have sold over 300 units of this model ! if you have this problem, unplug from mains for about an hour then plug back in and switch on, I turned the setting down to say 2 and it ran all night without any problem, I suspect this is an overkill safety feature, I do not know why as even on 10 it is not that powerful, anyway has worked fine ever since, I just put it on high for...