ChicknWing
Chirping
While this is an old thread, one thing that was not mentioned was to check to make sure that the string is not wrapped around the motor shaft. This is something that happened to me & caused problems with opening/closing of the door. I took the unit off the coop, removed the front control panel, like I would if I had to replace the batteries. Next, removed the motor connector from the front control panel. Next, I removed the spindle & the motor in order to free the string from the shaft. Plugged the motor cable into the controller and went through the door calibration process in order to properly wind the string back onto the spindle. Once that was done, attached the controller panel back to the housing & then the entire unit to the coop. Recalibrated the door and I was back in business. I can now see the difference in speed in the opening & closing of the door. Another thing to look out for is the time. If you have AM/PM reversed, then this can also prevent the door from automatically opening / closing.