1. Insufficient motor power: the outdoor ceiling curtain belongs to the tension type ceiling curtain system, and the tubular motor with larger torque shall be selected as much as possible during the initial installation. When the electric motor works in the long-term outdoor environment, under the action of rain erosion and high-strength tension, the power will inevitably weaken, and the sunshade will stop when it cannot reach the top, in this case, the motor must be replaced;
2.面料老化：由于长期室外雨水的侵蚀和日光的暴晒对面料的损坏都比较大，色牢度不高的面料两三年之后就褪色老化了，这就需要重新更换面料了；
2. Fabric aging: due to the long-term outdoor rain erosion and sunlight exposure, the fabric is damaged greatly. The fabric with low color fastness will fade and age after two or three years, which needs to be replaced;
3.牵引绳磨损断裂：一般来讲户外天棚帘两侧轨道顶端的定滑轮因为户外产品防水的缘故，都没有加轴承，牵引绳并且在强张力的作用下往复运行，日积月累，再结实的的牵引绳也会磨损直至断裂，户外天棚帘面料运行失去传动无法正常运行，这就需要更换牵引绳；
3. Abrasion and fracture of traction rope: Generally speaking, the fixed pulley at the top of the track on both sides of the outdoor ceiling curtain does not have bearings because of the waterproof of outdoor products. The traction rope runs repeatedly under the action of strong tension, accumulating over time. Even the strongest traction rope will wear until it breaks. The outdoor ceiling curtain fabric will lose transmission and cannot operate normally, which requires replacing the traction rope;
4.弹簧张力不足：主要表现在面料松弛、牵引绳脱轨、面料跑偏的现象，这个没有别的解决办法，只能从新更换弹簧；
4. Insufficient spring tension: mainly manifested in the phenomenon of fabric relaxation, traction rope derailment and fabric deviation. There is no other solution but to replace the spring;
5.控制系统故障：控制系统故障主要表现在遥控器失灵，或者说根本就控制不了。这就需要从新检查，更换控制线、电机接收器和发射器。
5. Control system failure: the failure of the control system is mainly manifested in the failure of the remote control, or the inability to control at all. This requires a new check and replacement of the control line, motor receiver and transmitter.
