LED display shows E4 and vacuum stops when using motorized floor brush

Safety: Remove the battery pack and disconnect the motorized floor head from the wand.

• Clear the brushroll: Turn the floor head upside down. Remove the brushroll cover (usually clips or screws). Cut away hair, threads, and debris with scissors, avoiding the bristles.
• Check end caps: Remove the brushroll and inspect the end caps and bearings. They should spin freely. Clean any wrapped hair and dust. If seized, the brushroll assembly should be replaced.
• Inspect brush motor: Look into the drive cavity where the brushroll engages. Check for melted plastic or burnt smell, indicating a failing brush motor.
• Reassemble and test: Refit the brushroll and cover, ensuring it rotates freely by hand. Reconnect to the vacuum and test. If E4 persists, the brush motor or wiring harness in the Parkside floor head may be defective.
• Do not force operation: Repeatedly resetting and running with a jam can burn out the brush motor and damage the main PCB.