IROBOT ROOMBA S9 Spinning In Circles
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
91%
CONF
|
Left Wheel Module
The failure typically occurs within the integrated optical encoder or the DC motor's brush assembly. If the control board receives no pulse-width modulation (PWM) feedback from the left wheel, it assumes an obstruction and increases power to the right wheel to pivot away, causing a continuous circle. Replacing the module restores the closed-loop feedback required for linear travel.
SKU: 4655880
|
|
|
6%
CONF
|
Right Wheel Module
Similar to the left module, the right drive unit contains a high-reduction gearbox that can suffer from gear tooth shear or hair ingress. When the right wheel fails to provide counter-torque to the left wheel, the robot rotates clockwise. The module is a self-contained unit and is the standard service solution for drive-train imbalance.
SKU: 4655907
|
|
|
3%
CONF
|
Cliff Sensor Array
If the infrared cliff sensors fail in an 'open' state, the logic board interprets the signal as a continuous ledge or drop-off. To prevent a fall, the firmware triggers an immediate rotation to find a safe path. If multiple sensors are compromised, the robot may enter an infinite rotation loop.
|
DIY Repair Guide
Watch exactly how to replace the Left Wheel Module.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.