Cordless vacuum displays E13 and emits a high-pitched beep; unit may not respond to mode changes.

Safety first: Remove the battery before working on the handle or control panel.

• 1. Check for stuck buttons: Press each button on the handle repeatedly to ensure it moves freely and returns. If a button feels stuck, gently work it around the edges to free it.
• 2. Dry out moisture: If the vacuum was recently cleaned with liquid or used in a damp environment, leave it in a warm, dry room for 24–48 hours with the battery removed to allow moisture to evaporate.
• 3. Visual inspection: Open the handle housing (if screws are accessible) to inspect the control PCB. Look for corrosion, residue, or damaged tracks around the buttons.
• 4. Check ribbon cable: Ensure the ribbon or wire harness from the handle PCB to the main PCB is fully seated and not pinched.
• 5. Replace handle PCB: If E13 persists and buttons do not respond correctly, the handle control PCB is likely faulty and should be replaced as a complete handle/control assembly.