How to adjust the position display error of Spreit S28 garage door opener

The method is as follows:

1. In standby mode, press the P key and hold it for about 3 seconds. When the LED digital tube flashes and displays 1, release the key.

2. Enter the first level setting: A. Opening stroke setting: LED digital tube flashes to display OL. Press the + or - key to move the door to the fully open position, and then press P key to confirm. B. Closing stroke setting: LED digital tube CL flashes on the display, press the + or - key to move the door to the fully open position, and then press the P key to confirm.