E6 error appears and the unit will not start; often accompanied by a beeping sound.

Safety first: Unplug the Philips carpet cleaner before inspection.

• Correct position: Ensure the unit is on a flat, level surface and the handle is locked in the normal operating position. Some Philips models will not run if the handle is fully upright or too far reclined.
• Reset the sensor: With the unit unplugged, gently tilt the machine forward and backward a few times, then return it to the normal position. Plug in and try again.
• Inspect tilt sensor: Open the housing to locate the tilt or roll sensor (often a small cylindrical or rectangular component mounted on the PCB or frame). Check for obvious damage or dislodging.
• Check wiring: Ensure the sensor harness is firmly connected to the main PCB. Reseat any loose connectors.
• Component replacement: If the sensor is physically damaged or tests open/shorted with a multimeter, replace the tilt sensor module or the entire PCB if the sensor is integrated.