If you are using mobile phone you could also use menu drawer from browser.
How to adjust andersen sliding door lock.
There are holes on your sliding glass door that conceal the adjusting screws to these rollers.
Available in finishes that coordinate with hardware for 400 series a series and e series patio doors.
If the door becomes even harder to open turn the screw in the opposite direction.
Inside a standard sliding glass door there are adjustable rollers that help it slide back and forth on the track.
Provides an extra measure of security when the door is in a locked position.
Lock can be set so the door is fully closed or partially open to provide a secure venting position.
If the operating panel moves stiffly it may be dragging slightly because the door is out of adjustment to adjust it remove the caps located on the interior bottom rail of the door insert a flat blade screwdriver and turn the screwdriver clockwise to raise the panel or counterclockwise to lower the panel fig.
On my door the holes had plastic plugs in them.
Most sliding doors have a mechanism called an adjusting screw located at the bottom of the door ends.
If you are using mobile phone you could also use menu drawer from browser.
Turning this screw raises or lowers the roller.
Give the screw a clockwise turn and test to see whether the door slides easier.