Kärcher
Overheating Due to Restricted Airflow or Electrical Losses
Cordless vacuum runs but the handle or body becomes excessively hot to the touch
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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
Clogged filters causing motor strain, Blocked cooling vents, Internal wiring resistance or partial short, Failing motor drawing excess current
How to Fix / Troubleshooting
Safety first: Stop using the vacuum and remove the battery. Allow the unit to cool completely.
- Clean filters and vents: Thoroughly clean all filters and ensure all air inlets/outlets are free of dust buildup.
- Check for obstructions: Inspect the suction path for clogs that could cause the motor to work harder.
- Test on low power: After cooling and cleaning, run the vacuum on the lowest power setting and monitor temperature. If it still overheats quickly, internal components may be failing.
- Service recommended: Persistent overheating indicates motor or PCB issues that require professional diagnosis.
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Repair Difficulty
Medium
3/5
Required Part
Suction Motor Assembly or Main Control PCB
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