C17
Samsung Dust Sensor / Particle Sensor Error

Vacuum shows C17 and cannot detect dust level or auto mode behaves erratically.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Dust sensor window blocked, Sensor connector loose, Faulty dust sensor module, Main PCB sensor input failure

How to Fix / Troubleshooting

Safety first: Remove the battery before cleaning internal sensors.

  • Locate dust sensor: On many Samsung cordless vacuums, the dust sensor is near the cyclone or air path with a small clear window.
  • Clean sensor window: Use a soft, dry brush or compressed air to gently remove dust from the sensor opening. Do not use liquids directly on the sensor.
  • Reassemble and test: Run the vacuum in auto mode and observe if behavior normalizes.
  • If C17 persists: The dust sensor module or its wiring may be faulty. Replacement of the sensor or main PCB is required by a technician.
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Repair Difficulty

Hard 4/5

Required Part

Dust Sensor Module
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