Digital Bissell carpet cleaner displays E4 and shuts down when trigger is pulled; may restart after unplugging.

Safety: Unplug the unit and allow it to cool for at least 30 minutes before working on it.

• 1. Empty dirty water tank: A full or improperly seated dirty water tank / recovery tank can restrict airflow and overheat the motor. Empty and reinstall the tank, ensuring the lid is sealed.
• 2. Clean lint screen and filters: Remove and rinse the lint screen and any foam or mesh filters in the dirty tank area. Let them dry completely before reinstalling.
• 3. Check for clogs: Inspect the nozzle foot, suction channel, and hose (if your model has a hose) for clumps of hair, carpet fibers, or debris. Clear all obstructions.
• 4. Ventilation: Ensure the motor vents on the sides or rear of the unit are not blocked by dust or being pressed against furniture during use.
• 5. Internal thermal device: If E4 appears quickly even when the unit is clean and cool, the thermal cutoff or temperature sensor on the motor may be faulty. This typically requires replacing the suction motor assembly or the main control board depending on design.