C6
Ecovacs
Vacuum Fan Motor Failure / Blockage
Robot vacuum reports C6 and stops; may say 'Please check the fan' or suction is very weak or absent.
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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 air duct or inlet, Dust bin not seated properly, Fan motor obstructed by debris, Fan motor electrical failure
How to Fix / Troubleshooting
Safety first: Turn the robot OFF and remove the dust bin.
- Check dust bin and filters: Empty the dust bin completely. Remove and clean the primary filter and HEPA filter (tap gently or wash if the manual allows; dry completely before reinstalling).
- Inspect air path: Look into the suction inlet and air channel for clogs (dust balls, paper, pet hair). Remove any obstructions with a brush or tweezers.
- Check dust bin seating: Reinstall the bin firmly until it clicks. A misaligned bin can trigger a fan error.
- Power cycle and test: Turn the robot back on and start a cleaning cycle. Listen for the fan motor starting.
If C6 persists and the fan does not run: The fan motor (vacuum motor) may be burned out or its wiring loose. This requires opening the robot and replacing the fan motor assembly.
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Repair Difficulty
Hard
4/5
Required Part
Vacuum Fan Motor Assembly
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