Vacuum runs only in low power; switching to high power causes immediate shutdown and E6 indication

Safety first: Turn OFF the vacuum and remove the battery pack before opening any covers.

Step-by-step checks:

• 1. Confirm battery charge level: Fully charge the battery until the charger indicates completion. Low voltage under load can trigger E6 in high mode.
• 2. Test without accessories: Run the vacuum in high mode with no wand or floor head attached (tool directly on the main body). If it still shuts down, the issue is likely in the main body rather than the attachments.
• 3. Inspect battery terminals: Check for heat discoloration or melting around the battery contacts on both the pack and the vacuum. Clean lightly and ensure a tight fit.
• 4. Try a different battery (if available): If a second compatible Amazon Basics battery runs high mode normally, the original pack is weak and should be replaced.

When to stop: If E6 persists with a known-good battery and clean contacts, the main control PCB or motor is likely failing. These repairs require disassembly and electronics handling; consider professional service or replacing the main body assembly.