I have a chamberlain whisper drive garage door opener. When I open the door and it reaches the top it starts making a loud noise. It's like the motor is still trying to pull the door up but it can't because the door has reached the top. I have to push the button to get the noise to stop. What do I do to get it working properly?
Building Materials - Chamberlain - 1/2-HP Whisper Drive Belt Drive Garage Access System
Answers & Comments
SOUNDS LIKE THE UP LIMIT IS EITHER OUT OF ADJUSTMENT OR NOT WORKING.
TURN IT ABOUT THREE TURNS COUNTER CLOCKWISE. THIS SHOULD BE ENOUGH TO MAKE IT NOT OPEN ALL THE WAY. THEN ADJUST IT 1/2 TURN AT A TIME THE OTHER WAY UNTIL IT GETS CLOSE THEN SMALLER ADJUSTMENTS TILL YOU ARE HAPPY WITH WHERE IT STOPS.
HOPE THIS HELPS