E5 error appears and the unit shuts down after a short period of use.

Safety first: Unplug the Philips carpet cleaner and allow it to cool for at least 30–45 minutes.

• Check airflow path: Remove the dirty water tank and inspect the suction inlet and channels for clogs. Clear any lint, hair, or debris.
• Clean filters: Many Philips carpet cleaners have a motor protection filter or foam filter near the dirty tank. Remove and wash the filter in lukewarm water (if washable). Allow it to dry completely before refitting.
• Inspect exhaust vents: Check the rear and side exhaust grills for dust buildup. Vacuum or brush them clean to restore airflow.
• Check motor fan (advanced): With the housing open (unit unplugged), inspect the motor cooling fan for broken blades or obstructions. A damaged fan can cause overheating and must be replaced with the motor assembly.
• Temperature sensor: Some models use a thermistor attached to the motor or PCB. If wiring is loose or the sensor is open-circuit, the unit may falsely detect overheat. Inspect the sensor wiring and replace the sensor or PCB if damaged.

If E5 recurs quickly after thorough cleaning and cooling, the motor or temperature sensing circuit is likely defective and professional service is recommended.