LiftMaster 8360 Premium Series DC Battery Backup Capable Chain Drive - Manuel (Page 13)

13
DIAGNOSTIC CODE SYMPTOM SOLUTION
Up arrow
Flash(es) Down arrow
Flash(es)
1 1
The garage door opener will not close and the light
bulbs fl ash. Safety sensors are not installed, connected, or wires may be cut. Inspect sensor wires for a
disconnected or cut wire.
1 2
The garage door opener will not close and the light
bulbs fl ash. There is a short or reversed wire for the safety sensors. Inspect safety sensor wire at all
staple and connection points, replace wire or correct as needed.
1 3
The door control will not function. The wires for the door control are shorted or the door control is faulty. Inspect door control
wires at all staple and connection points, replace wire or correct as needed.
1 4
The garage door opener will not close and the light
bulbs fl ash. Safety sensors are misaligned or were momentarily obstructed. Realign both sensors to
ensure both LEDs are steady and not fl ickering. Make sure nothing is hanging or mounted on
the door that would interrupt the sensor’s path while closing.
1 5
Door moves 6-8" stops or reverses. Manually open and close the door. Check for binding or obstructions, such as a broken
spring or door lock, correct as needed. Check wiring connections at travel module and at the
logic board. Replace travel module if necessary.
No movement, only a single click. Manually open and close the door. Check for binding or obstructions, such as a broken
spring or door lock, correct as needed. Replace logic board if necessary.
Opener hums for 1-2 seconds no movement. Manually open and close the door. Check for binding or obstructions, such as a broken
spring or door lock, correct as needed. Replace motor if necessary.
1 6
Door coasts after it has come to a complete stop. Program travel to coasting position or have door balanced by a trained door systems
technician.
2 1-5 No movement, or sound. Replace logic board.
3 2 Unable to set the travel or retain position. Check travel module for proper assembly, replace if necessary.
3 3
The battery status LED* is constantly fl ashing
green. Battery backup* charging circuit error, replace the logic board.
*If applicable.
Troubleshooting
Diagnostic Chart
Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener will fl ash the diagnostic codes.