Filter cleaning

The fact is that the "bagless bandwagon" is powered by some excellent marketing that conceals what is often poor technology. In your case, the filter blocks because it's doing the job that a bag would do in a bagged machine (catching the dust), and then the machine overheats because the flow of cooling air to the motor is restricted. The only solution (for this machine) is to keep buying new filters - the only permanent solution is to buy a different vacuum cleaner. And my advice is to buy one with a bag!