Cordless vacuum shows E8 and shuts down, often accompanied by a burning smell or unusual noise.

Safety first: Immediately stop using the vacuum, remove the battery, and allow the unit to cool. Do not continue to run a motor that smells burnt.

• Step 1 – Visual inspection: Check the motor vents for signs of soot, melted plastic, or discoloration.
• Step 2 – Smell test: If a strong burnt electrical smell persists around the motor housing, the motor windings are likely damaged.
• Step 3 – Check for water damage: If the vacuum was used to pick up liquids or very damp debris, water may have entered the motor. Do not attempt to dry and reuse a water‑damaged motor.
• Step 4 – Do not disassemble motor: The motor is a sealed component on most Tower cordless models. Opening it is unsafe and not recommended.
• Step 5 – Replace assembly: Replace the complete Tower main motor assembly or main body motor module. If the PCB shows visible burn marks, replace the main control PCB as well.