8550W Owners Manual
Page 38
...for proper assembly, replace if necessary. 3 3 The battery status LED* is programmed with self-diagnostic capabilities. Battery backup charging circuit error, replace logic board. *(if applicable) 38 Troubleshooting Diagnostic Chart Your garage door opener is constantly flashing green. The wires for the ...Door moves 6-8" stops or reverses. Check for binding or obstructions, such as a broken spring or door lock, correct as needed . DIAGNOSTIC CODE SYMPTOM SOLUTION Up Arrow Flash(es) Down Arrow Flash(es) 1 1 The garage door opener will not close and the light Safety sensors...
...for proper assembly, replace if necessary. 3 3 The battery status LED* is programmed with self-diagnostic capabilities. Battery backup charging circuit error, replace logic board. *(if applicable) 38 Troubleshooting Diagnostic Chart Your garage door opener is constantly flashing green. The wires for the ...Door moves 6-8" stops or reverses. Check for binding or obstructions, such as a broken spring or door lock, correct as needed . DIAGNOSTIC CODE SYMPTOM SOLUTION Up Arrow Flash(es) Down Arrow Flash(es) 1 1 The garage door opener will not close and the light Safety sensors...
8550W Owners Manual
Page 39
...needed. The garage door opener will NOT connect to be replaced, see page 4 or visit WiFiHelp.LiftMaster.com for several reasons: l (If applicable) Operating on the door that turns the light on... and not flickering. If door is binding or sticking contact a trained door systems technician. Communication error to activate Wi-Fi LEARN mode. ensure both sensors to my garage door opener: Depending on ...the door. The garage door opener will still not activate the door check the diagnostic codes to ensure the garage door opener is not programming to bulbs flash. This feature can...
...needed. The garage door opener will NOT connect to be replaced, see page 4 or visit WiFiHelp.LiftMaster.com for several reasons: l (If applicable) Operating on the door that turns the light on... and not flickering. If door is binding or sticking contact a trained door systems technician. Communication error to activate Wi-Fi LEARN mode. ensure both sensors to my garage door opener: Depending on ...the door. The garage door opener will still not activate the door check the diagnostic codes to ensure the garage door opener is not programming to bulbs flash. This feature can...