目前经常会有用户反映出现卷帘门忽然能上不能下或能下不能上的卡壳故障，影响使用效果，造成生活上的不便，那么要想赶紧处理就要先找到原因，下面来整理总结了几点，供大家参考。

　　At present, there are often users who report that the rolling shutter door can suddenly be up or down or down can not be up, which affects the use effect and causes inconvenience in life. Then, in order to quickly deal with it, we must first find the reason. The following points are summarized for your reference.

　　经常出现主要是原因是限位器跑过头，卷帘门的限位器一般分上限位和下限位。有时忽然停电，用户卷帘门维修只能用手拉链条来开关门，或拉开自动下滑扳手让门关上。这时假如不留意限位开关是否到位，就轻易造成限位跑过头的故障。一般假如下限位跑过头，那下次有电时就会出现只能上不能下的现象。

　　The main reason is that the limiter runs too far. The limiter of the rolling shutter door is generally divided into upper limit and lower limit. Sometimes there is a sudden power failure, and users can only open and close the door by pulling the chain by hand, or pull the automatic sliding wrench to close the door. At this moment if do not notice limit switch whether reach the specified position, cause limit to run overdone easily fault. Generally, if the lower limit runs too far, the next time there will be electricity can only be on the phenomenon.

　　假如是手卷帘门拉上升限位跑过头则下次有电时就会出现只能下不能上的现象，解决此类情况的题目很简单，只要把限位开关重新调回传递丝杆有效限位范围内，再重新调整以下限位，锁牢牢钉螺丝即可，可能是控制线路中的某条线没接好或被拉出来了。

　　If is a hand book door pull up limit overshooting next, can appear when there is electricity can only on the phenomenon, can't solve the topic of this kind of situation is very simple, as long as the limit switch back again passed screw effective limit range, adjust the following limit again, firmly lock screw can, may be a line in the control circuit is not connected or pulled out.

　　卷帘门出厂时每台均检验过，出现没接好的可能性较小，有可能是在搬运过程或安装过程被拉断。我们也发现过有的安装师傅将卷帘门的引出线当做提电机的手把来提电机，这种做法是正确的，往往会造成电机引线与继电器的插头脱落，造成故障。

　　Every rolling shutter door has been inspected when it leaves the factory. It is less likely that it is not connected well, and it may be pulled off in the process of handling or installation. We have also found that some installation masters will lead the curtain door as the hand handle of the motor to lift the motor, this approach is correct, often cause the plug of the motor lead and relay to fall off, causing failure.

　　济南卷帘门厂厂家向您友情提示，如上只是按常见卷帘门的故障解决经验，为了起见，建议还是找人士进行维护检修，不然可能会造成卷帘门的损坏。

　　Ji 'nan rolling shutter door factory would like to remind you that the above is just according to the troubleshooting experience of common rolling shutter doors. For the sake of safety, it is suggested to find professionals for maintenance and repair, otherwise it may cause damage to the rolling shutter doors.

　　卷帘门出现忽然的卡壳故障是什么原因？以上便是问题的出现原因了，如果您对此还有什么问题没找到原因的话，可以来我们网站www.jnhsjlm.com进行咨询了解。

　　What is the reason for the sudden jam fault of rolling shutter door? The above is the cause of the problem, if you do not find the reason for this problem, you can come to our website www.jnhsjlm.com for consultation.