Cordless vacuum displays E12 and the brush head may not be recognized; accessory icons may flash.

Safety first: Remove the battery before inspecting electrical contacts on the wand or accessories.

• Check accessory compatibility: Ensure you are using a Tineco brush head or tool designed for your specific model.
• Inspect contacts: Look at the metal pins and pads on the wand and accessory. Clean gently with a dry cloth. Do not bend pins.
• Test with another accessory: If another powered head or tool works, the original accessory is likely faulty.
• Check wand continuity (visual): Inspect the wand for kinks, dents, or crush damage that could break internal wires.
• Replace faulty part: Replace the damaged accessory or wand with a genuine Tineco part. If no accessories are recognized, the main body connector or control board may need service.