Cordless vacuum shows E10 and the LED lights on the floor nozzle flash; brush may not respond to mode changes.

Safety first: Remove the battery and detach the wand and floor nozzle before inspection.

• Inspect connectors: Check the electrical connectors at both ends of the wand and on the floor nozzle. Look for bent pins, corrosion, or debris. Clean gently with a dry cloth.
• Reseat components: Reconnect the wand firmly to the main body and the floor nozzle, ensuring they click into place. Loose connections can cause intermittent communication errors.
• Test with a different attachment: If your ETA model includes another powered attachment (e.g., mini motorized brush), connect it instead. If it works, the main floor nozzle is likely faulty. If it also fails, the issue may be in the wand or main body.
• Check wand continuity (advanced): If you are qualified and have a multimeter, you can test continuity of the power and signal lines through the wand. Replace the wand if any line is open.

When to call a technician: Persistent E10 usually indicates a failed brush head PCB or damaged wiring. Replacement of the motorized nozzle or wand should be done by an ETA service center.