27 Error Possible Cause Solution The battery indicator does not light up while charging. The charger is not connected to the vacuum cleaner. Make sure the charger is plugged in correctly. The battery is fully charged and went into sleep mode. The vacuum cleaner can be used normally. If the problem still persists after ruling out the above two possibilities, please contact after- sales service for help. The battery charges slowly. The battery temperature is too low or too high. Wait until the battery temperature normalizes, then resume use. The water tank does not dispense water, or dispenses water slowly. The water dispenser filter is clogged. Clean or replace the water dispenser filter.
The mop pad is dirty. Clean or replace the mop pad.