39
DIAGNOSTIC CODE SYMPTOM SOLUTION
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Flash(es)
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Flash(es)
4 1-4
Door is moving 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. If the door is binding or sticking contact a trained door systems technician. If door is not
binding or sticking attempt to reprogram travel (refer to page 29).
4 5
Opener runs approximately 6-8", stops and reverses. Communication error to travel module. Check travel mod
ule connections,repl ace travel module if
necessary.
4 6
The garage door opener will not close and the light bulbs
flash.
Safety sensors are misaligned or were momentarily obstructed . Realign both sensors to en sure both LEDs
are steady and not flickerin g. Make sure nothing is hanging or mounted on the door that would in terrupt the
sensor’s path while closing.
My garage door opener is beeping:
l Garage door opener has been activated through a device providing unattended close , see
www.chamberlain.com for more information.
My remote control will not activate the garage door:
l Verify the lock feature is not activated o n the door control.
l Reprogram the remote control.
l If the remote control will still not activate the door check the diagno stic codes to ensure the garage
door opener is working pr operly.
My door will not close and the light bulbs blink on my motor unit:
The safety reversing sensor must be conn
ected and aligned correctly before the garage door opener will
move in the down direction.
My garage door opener light (s) will not turn off when the door is open:
The garage door opener is equipped with a feature that turns th e light on when the safety reversing
sensors have been obstructed. Th ese features can be disabled using the door control, see page 33.
My neighbor’s remote control opens my garage door:
Erase the memory from your garage door opener and rep rogram the remote contr ol(s).
My vehicle's Homelink
®
is not programming to my garage door opener:
Compatability Bridge
TM
(no t included) may be necessary for certain vehicles. Visit
bridge.chamberlain.com to find out if a Bridge is needed.
Troubleshooting
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