The is a protective feature, not a death sentence. While it is alarming to see your $600 vacuum shut down, the code exists to save the motor from burning out.
Do not rush to buy a new vacuum. Follow this sequence. In 70% of cases, the fix is free and takes five minutes. philips speedpro max e4 error
: If it still won't run, there may be a mechanical issue requiring assistance from the Philips Support Center service center locations for your specific SpeedPro Max model? The is a protective feature, not a death sentence