F17
Miele Battery Temperature / Sensor Fault

Robot vacuum displays F17 and may shut down unexpectedly during cleaning, even with sufficient battery indicated.

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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

Defective battery temperature sensor (NTC), Loose battery connector, Overheating battery pack, Faulty battery management circuit

How to Fix / Troubleshooting

Safety first: Turn the robot OFF and remove it from the dock. Do not continue using the robot if the battery area feels very hot or there is any smell of burning.

Steps:

  • 1. Allow cooling: Let the robot sit powered off at room temperature for at least 1 hour. Do not charge during this time.
  • 2. Inspect for damage: Check the underside and battery compartment area for signs of swelling, discoloration, or deformation.
  • 3. Full recharge: After cooling, place the robot on the dock and allow a full charge cycle. Then test a short cleaning run.

When to call a technician: Persistent F17 or any signs of battery overheating require immediate service. The battery pack, temperature sensor, or battery management circuit may need replacement. Do not attempt to open or puncture the battery pack.

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Repair Difficulty

Hard 4/5

Required Part

Battery Pack with Temperature Sensor
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