Product name/model: RT210WM2110
Possible causes:
1. Check whether the bottom of your refrigerator is stable.
2. Check whether the refrigerator is too close to the wall.
3. Check whether the refrigerator touches other objects.
Remedies:
1. Adjust the bottom adjusting leg to stabilize the refrigerator.
2. Leave sufficient space around your refrigerator (please check your user manual).
3. Remove the obstacles.