Display shows E7 and the unit beeps; machine will not start cleaning cycle.

Safety: Unplug the cleaner before inspecting sensors.

• Reseat tanks: Remove both the clean solution tank and the dirty water recovery tank. Wipe the contact areas dry and reinstall them firmly until they click into place.
• Clean level float: On some Ewbank models, a float inside the clean tank or recovery tank is detected by a sensor. Rinse the tank thoroughly with warm water to free any stuck float.
• Inspect tank tabs: Check for broken plastic tabs or magnets on the tank that align with the body sensor. If broken, the tank may need replacement.
• Check sensor area: Locate the tank sensor (reed switch or micro-switch) on the body. Ensure it is not obstructed by dirt or detergent residue. Wipe gently with a damp cloth.

If E7 persists with correctly seated tanks, the level sensor or associated wiring may be faulty and should be replaced.