there are 2 protect sensors on each side near the floor. and they have to be aligned. the door cannot be closed when they are off set. you can align them manually and when the alignment is good, the light on the sensor will turn green.
PPQQ 发表于 2013-12-14 15:43 ( ~) R) z) n- D' s* R
我们家也出这个问题了 " x3 g2 p% \% b' M ?, J' S' f然后调sensor阿什么的) S3 u# u, t2 Y5 o. z
最后把那两边的sensor察干净----可是门好了两天就又关不上 ...