E17
LG
Left Drive Wheel Encoder Signal Loss
Robot vacuum reports a left wheel encoder error (E17); it may veer to one side or stop with an 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
Dirty or damaged encoder disk, Loose encoder sensor on wheel module, Broken encoder wiring, Failed encoder sensor IC
How to Fix / Troubleshooting
Safety first: Turn off and flip the robot carefully; avoid stressing the wheel assemblies.
- 1. Clean wheel area: Remove debris around the left wheel and suspension. Sometimes dirt can interfere with the encoder.
- 2. Compare wheel behavior: Spin both wheels by hand and compare resistance and smoothness. If the left wheel feels abnormal, the module may be damaged.
- 3. Advanced inspection: Remove the bottom cover to access the left wheel module. Check the encoder disk (often a slotted or patterned wheel) for dirt or cracks. Clean gently with compressed air.
- 4. Check wiring: Ensure the wheel module connector is fully seated in the main PCB and that no wires are pinched or broken.
- If the encoder error persists, replace the entire left wheel module, as the encoder is typically integrated with the motor assembly.
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Repair Difficulty
Hard
4/5
Required Part
Left Drive Wheel Module
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