Why does the Xiaomi Truclean W30 Pro Wet Dry Vacuum report "dirty water tank full" even after it's been emptied and cleaned?

The Xiaomi Truclean W30 Pro Wet Dry Vacuum can sometimes report “dirty water tank full” even after the tank has been emptied and cleaned. This alert is triggered by the two metal detection pins on the dirty water tank lid. When these pins become electrically connected, for example, by wet hair, debris, or water droplets, the vacuum interprets it as a full tank.
The solution and maintenance steps are as follows:
  1. Open the dirty water tank and carefully remove the lid.
  2. Clean the filter to ensure there is no blockage affecting water flow or sensor readings.
  3. Wipe the two metal detection pins with a dry cloth to remove moisture or debris that could cause false signals.
  4. Reassemble the tank and lid securely before resuming operation.

Does it help?

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