8550 Manual
Page 35
DIAGNOSTIC UP CODE ARROW DOWN ARROW SYMPTOM CAUSE RESOLUTION 1-1 1 FLASH 1 FLASH The garage door opener will not The wires for the ... connected, then replace the travel module. If sending sensor LED is hanging or mounted on the garage door opener flash the diagnostic codes. Close the garage door using the remote control or the door control. A flicker of the safety sensor LED indicates a misalignment.... but no Bad logic board movement Replace the logic board. 1-5 1 FLASH 5 FLASHES The opener runs approximately 6-8" Communication error to the receiving sensor (green LED).
DIAGNOSTIC UP CODE ARROW DOWN ARROW SYMPTOM CAUSE RESOLUTION 1-1 1 FLASH 1 FLASH The garage door opener will not The wires for the ... connected, then replace the travel module. If sending sensor LED is hanging or mounted on the garage door opener flash the diagnostic codes. Close the garage door using the remote control or the door control. A flicker of the safety sensor LED indicates a misalignment.... but no Bad logic board movement Replace the logic board. 1-5 1 FLASH 5 FLASHES The opener runs approximately 6-8" Communication error to the receiving sensor (green LED).
8550 Manual
Page 36
...Verify the lock feature is okay, reprogram apparent reason or after sticking door touching the floor 4-5 4 FLASHES 5 FLASHES The opener runs Communication error to the Door Control section. Refer to page 2 . Refer to page 2. for no apparent reason sticking door 4-3 4 FLASHES 3 FLASHES... travel module. 6-8" and stops and/or reverses 4-6 4 FLASHES 6 FLASHES The door reverses for no Safety sensors were Review Diagnostic Codes 1-1, 1-2, and 1-4 correct as a rope attached to ensure the garage door opener is constantly flashing green Battery LED flashing Replace the...
...Verify the lock feature is okay, reprogram apparent reason or after sticking door touching the floor 4-5 4 FLASHES 5 FLASHES The opener runs Communication error to the Door Control section. Refer to page 2 . Refer to page 2. for no apparent reason sticking door 4-3 4 FLASHES 3 FLASHES... travel module. 6-8" and stops and/or reverses 4-6 4 FLASHES 6 FLASHES The door reverses for no Safety sensors were Review Diagnostic Codes 1-1, 1-2, and 1-4 correct as a rope attached to ensure the garage door opener is constantly flashing green Battery LED flashing Replace the...