Safety first: Turn off the vacuum and remove the battery pack.

Step 1 – Allow cooling: Allow the vacuum to rest for at least 30 minutes in a cool, ventilated area.
Step 2 – Clean external vents: Use a soft brush to remove dust from all air intake and exhaust vents on the main unit.
Step 3 – Reduce duty cycle: When resuming use, avoid continuous operation at maximum power. Use standard mode for general cleaning and reserve maximum power for short bursts.
Step 4 – Internal cleaning (advanced): If you are comfortable doing so and the unit is out of warranty, carefully open the housing to blow out dust from around the motor and PCB using dry compressed air. Avoid touching components.
Step 5 – Sensor/PCB replacement: If E12 recurs quickly, even when the unit is cool and clean, the temperature sensor or PCB may be faulty and require replacement.

Warning: Do not block the vents with your hand or soft furnishings during use; this can rapidly overheat the unit.

Vacuum beeps and displays E12; the unit may start and then immediately stop.

Possible Causes