8550 Manual
Page 2
... Needed To prevent possible SERIOUS INJURY or DEATH: • ALWAYS call a trained door systems technician. 4. Preparation Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is out of balance. If your door binds, sticks, or is a torsion spring or center bearing plate in this...
... Needed To prevent possible SERIOUS INJURY or DEATH: • ALWAYS call a trained door systems technician. 4. Preparation Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it is out of balance. If your door binds, sticks, or is a torsion spring or center bearing plate in this...
8550 Manual
Page 36
... UP CODE ARROW DOWN ARROW SYMPTOM CAUSE RESOLUTION 3-3 3 FLASHES 3 FLASHES The garage door opener is idle and the battery LED is working properly. If your garage door opener and reprogram the remote control(s). touching the floor 4-4 4 FLASHES 4 FLASHES My door reverses for no Safety sensors were Review Diagnostic Codes 1-1, 1-2, and 1-4 correct as a rope attached to set the time...
... UP CODE ARROW DOWN ARROW SYMPTOM CAUSE RESOLUTION 3-3 3 FLASHES 3 FLASHES The garage door opener is idle and the battery LED is working properly. If your garage door opener and reprogram the remote control(s). touching the floor 4-4 4 FLASHES 4 FLASHES My door reverses for no Safety sensors were Review Diagnostic Codes 1-1, 1-2, and 1-4 correct as a rope attached to set the time...