Of slack from the rail to the chain check your manual.
Troubleshoot garage door opener not working.
Finally it s possible the garage door opener s motor.
From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.
They can be found at the back panel of your craftsman garage door opener to increase the open force turn the open force dial about 1 4 of a full turn similarly to increase the close force turn the close force about 1 4 of a full turn operate your garage door.
If you re too far away this can cause a.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
Also verify the antenna on the motor unit is in the proper placement.
Find the chamberlain garage door opener technical support you need to get your garage door opener operational.
You may also need to reprogram your keypad or replace the batteries in it.
Garage door won t open all the way.
Now point the safety sensors at each other.
Over tightening the chain will put excess wear and tear on the shaft and gears.
If the batteries in your transmitter are dead the transmitter won t be able to send a signal to your garage door to open.
Locate the force adjustment dials.
This may sound obvious but your garage door transmitters need power to work.
Disconnect the pre wire from the garage door opener connect the white wire from the sensor to the white terminal of the garage door opener and then the black and white wire to the grey terminal.
If pressing the button on your garage door s remote control doesn t work check the batteries first.
If the leds on both sensors glow it means they are not faulty.
It s also possible that the circuit breaker fuse or gfci outlet powering the door opener circuit has tripped or burned.
To help you troubleshoot your garage door issues here are the top 10 reasons your garage door won t work.
The keypad doesn t work firstly check that you re using it within the range required for your opener.
Check the chain tension.
The transmitter batteries are dead.
Before any garage door remote works correctly.