Cordless vacuum shows E9 and immediately shuts down when the trigger or power button is pressed.

Safety first: Remove the battery pack. If the pack feels hot, place it on a non‑flammable surface away from direct sunlight and allow it to cool completely.

Cooling and reset:

• Allow the battery to cool for at least 1 hour at room temperature.
• Refit the battery and try again. If E9 clears, avoid running the vacuum continuously on boost mode for long periods.

Check battery type and condition:

• Ensure you are using a genuine Salter battery pack specified for your model.
• Inspect the battery casing for swelling, cracks, or damage. Do not use a damaged pack.

If E9 persists even when the battery is cool and genuine, the internal temperature sensor or BMS is faulty. Replace the complete battery pack; do not attempt to open or repair the pack.