Trifo Main Brush Drive Failure Without Code

Robot vacuum's main brush does not rotate, but suction still works

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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

Broken main brush belt or gear, Stripped brush end, Main brush motor failure, Disconnected brush motor harness

How to Fix / Troubleshooting

Safety first: Turn OFF the robot and remove the main brush.

  • 1. Inspect brush ends: Check that the drive end of the brush is not rounded or broken. Replace the brush if damaged.
  • 2. Check for belt/gear issues (if applicable): Some Trifo models use internal gears. Open the bottom cover and inspect the main brush drive for broken gears or belts.
  • 3. Test motor: With the brush removed, start a cleaning cycle and look into the brush housing to see if the drive coupler spins. If not, the motor or gearbox has failed.
  • 4. Replace assembly: Install a new main brush motor/gearbox module if the motor does not run.

Warning: Running the robot without a functioning main brush will severely reduce cleaning performance and may cause debris buildup in the suction path.

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Repair Difficulty

Hard 4/5

Required Part

Main Brush Motor Assembly
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