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40
DIAGNOSTIC CODE SYMPTOM SOLUTION
Up Arrow
Flash(es)
Down Arrow
Flash(es)
4 5
Opener runs approximately 6-8" (15-20 cm), stops and reverses. Communication error to travel module. Checktravel module connections,replace travel module if
necessary.
4 6
The garage door opener will not close and the light bulbs flash. Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors to
ensure both LEDs are steady and not flickering. Make sure nothing is hanging or mounted on the
door that would interrupt the sensor’s path while closing.
The garage door opener can beep for several reasons:
l Garage door opener has been activated through a device or feature such as Timer-to-Close or
garage door monitor, see page 36.
My remote control will not activate the garage door:
l Verify the lockfeature is not activated on the door control.
l Reprogram the remote control.
l If the remote control will still not activate the door check the diagnostic codes to ensure the
garage door opener is working properly.
My door will not close and the light bulbs blink on my motor unit:
The safety reversing sensor must be connected and aligned correctly before the garage door opener
will move in the down direction.
l Verify the safety reversing sensorsare properly installed, aligned and free of any obstructions.
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 the light on when the safetyreversing
sensors have been obstructed. These features can be disabled using the door control, see page 35.
My neighbor’s remote control opens my garage door:
Erase the memory from your garage door opener and reprogram the remote control(s).
My vehicle's Homelink
®
is not programming to my garage door opener:
CompatibilityBridge
TM
(not included) may be necessary for certain vehicles. Visit
bridge.chamberlain.com to find out if a Bridge is needed.
Wi-Fitroubleshooting
The garage door opener will NOT enter Wi-Fi LEARNmode:
l After the initial installation of the garage door opener, the garage door opener must complete a
full cycle (open and closed) before the Wi-Fi LEARNmode can be activated.
l If there has been a recent power outage, the garage door opener must complete a full cycle
before the Wi-Fi LEARN mode can be activated.
See page 32 to activate Wi-Fi LEARNmode.
If your blackadjustment button is not solid green go to wifihelp.chamberlain.com.
Troubleshooting
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