Chamberlain C2405C Istallation Manual page 41

Troubleshooting
Additional Troubleshooting
My garage door opener beeps and flashes its lights before door closes:
Garage door opener has been activated through a device or feature such as Timer-to-

Close or garage door monitor.
My garage door opener stops, reverses, beeps and flashes its lights:
Check for binding or obstructions anywhere along the track to garage floor.

My remote control will not activate the garage door:
Verify the lock feature is not activated on the door control.

Reprogram the remote control.

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
The safety reversing sensor must be connected and aligned correctly before the garage door
opener will move in the down direction.
Check for binding or obstructions anywhere along the track to garage floor.

The safety reversing sensor must be connected and aligned correctly before the garage

door opener will move in the down direction.
Verify the safety reversing sensors are properly installed, aligned and free of any
o
obstructions.
If the receiving sensor (green LED) faces direct sunlight, switch the receiving
o
sensor with the sending sensor so the receiving sensor is not in direct sunlight.
Wi-Fi troubleshooting
®
The garage door opener will NOT enter Wi-Fi
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
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 37 to activate Wi-Fi LEARN mode.
If your black adjustment button is not solid green go to support.chamberlaingroup.com.
My vehicle's Homelink is not programming to my garage door opener:
®
Compatibility Bridge (not included) may be necessary for certain vehicles. Visit bridge.chamberlain.
com to find out if a Bridge is needed.
My neighbor's remote control opens my garage door:
Erase the memory from your garage door opener and reprogram the remote control(s).
Safety sensor LED lights are not lit:
If the sensor LEDs do not glow steadily when the opener is activated, see SAFETY SENSOR
TROUBLESHOOTING page 32.
41
learn mode:
®
learn mode can be activated.
®