C15
Ecovacs
Vacuum Fan Speed Feedback Error
Robot vacuum reports C15 and stops; may say 'Fan speed error' or 'Suction error'.
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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
Fan motor speed sensor failure, Fan blades obstructed, Fan wiring loose, Main board fan driver fault
How to Fix / Troubleshooting
Safety first: Turn the robot OFF and remove the dust bin.
- Inspect for clogs: Check the suction inlet and fan intake area for foreign objects or heavy dust buildup.
- Clean filters: Remove and clean or replace the primary and HEPA filters to reduce load on the fan.
- Power reset: Turn the robot back on and test suction in a cleaning cycle.
If C15 persists and suction is abnormal: The fan motor assembly (including its speed sensor) or the main board may need replacement. This is an advanced repair.
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Repair Difficulty
Professional Required
5/5
Required Part
Vacuum Fan Motor Assembly
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