What does the Mi Portable Electric Air Pump display error code 264 mean?

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If the device is powered on but not connected to any pumping device, and the tire pressure display shows "264, 265" or fluctuates between these numbers, and pressing the start button fails to start inflation, this is likely due to water ingress. Please check the device for water ingress. If this cannot be resolved, please contact a service center for inspection and repair.

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