Office Chair Not Rebounding

An office chair not rebounding may be caused by mechanical jamming, airbag failure, damaged adjustment mechanisms, accidental activation of the 'rocking function', or damaged components, and targeted troubleshooting can resolve the issue.

1. Mechanical Jamming
   A common cause is the backrest adjustment lever or lock not being properly reset or getting stuck in a fixed position. For lever-adjusted chairs, locate the adjustment lever under the seat (usually on the right side), fully pull it out, assist in pushing the backrest forward, and once the backrest is upright, push the control lever into the locking pin hole to secure it. For gas-lift-adjusted chairs, find the adjustment handle under the chair, pull it upward (some models require pressing a side button) while leaning forward, and release the handle once the backrest is reset. High-end ergonomic chairs use knob adjustments; turn the knob counterclockwise to unlock or reduce resistance, and lean forward to reset the backrest. Additionally, check for cables or debris stuck near the chair's base or five-star wheel casters; sitting upright and gently rotating the chair left and right may resolve minor jams.

2. Airbag Failure (for airbag-equipped chairs)
   If the chair is equipped with an airbag, a leak can prevent it from rebounding. Focus on checking whether the air control valve and switch at the bottom of the seat are functioning properly. If the issue persists, visit a 4S shop for air replenishment and repair. Do not attempt to handle it yourself to avoid safety hazards caused by improper operation.

3. Damaged Adjustment Mechanisms
   Loose handles, failed gas rods, or other damaged adjustment mechanisms can prevent the seat from rebounding. Try adjusting the base knob by turning it clockwise to increase tension; if the gas rod is completely unresponsive, it is likely damaged and needs to be replaced with a new one.

4. Accidental Activation of the 'Rocking Function'
   If the chair is rocking slightly back and forth, the rocking function lock may have been disengaged. Locate the rocking function adjustment lever or lock under the chair (usually on the side) and push it back to lock the chair, stopping the rocking and fixing the angle.

5. Damaged Components
   Damage to components such as the mechanism spring can also prevent the backrest from rebounding. In this case, it is recommended to contact the chair manufacturer or seller to inquire about replacing the damaged components; if the components cannot be replaced or the repair cost is too high, consider purchasing a new chair.