39
1/2 HP Chain Drive Garage Door Opener
Troubleshooting
Use the following table to troubleshoot common problems with the garage door opener. If the following does not
resolve the problem, contact technial support or a professional garage door opener repairman.
Symptom Possible
Cause
Solution
The garage door opener starts to
operate but then stops
immedately.
The garage door is locked.
Unlock the door and try again.
The range of motion setting is
incorrect
Adjust the setting per the instructions
on page 29.
The force setting is incorrect.
Adjust the force setting per the
instructions on page 31.
The safety reverse setting is
incorrect
Adjust the setting per the instructions
on page 32.
The springs may be old and weak
requiring more force to open the
door than the opener can provide.
Replace the old and weak springs.
The garage door opener w ill not
operate at all and the light will not
turn on.
The opener is not plugged in.
Plug the opener into 110v power
outlet.
The plug the opener is plugged into
has no power.
Check the circuit breaker.
The garage door opener w ill not
operate at all but the light
will
turn
on.
The safety sensors are not aligned. Align the sensors per the directions
on page 17.
The wires from the safety sensors
are broken or not connected.
Verify the wires are correctly
attached to the opener per the
instructions on page 17.
An object is blocking the safety
sensors.
Check that nothing is blocking the
line-of-site between the two safety
sensors. If so, remove it.
The garage door opener does not
open fully or close fully.
Something is blocking the garage
door.
Remove the obstruction.
The range of motion setting is
incorrect
Adjust the setting per the instructions
on page 29.
The force setting is incorrect.
Adjust the force setting per the
instructions on page 31.
The safety reverse setting is
incorrect
Adjust the setting per the instructions
on page 32.