If your door is new the hinges could be tight until they receive some use.
Pella door lock stuck.
To unjam the deadbolt remove the installation screws on the latch rail from the outside.
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Once the mechanism has been released adjust stiff pella sliding door locks by loosening the screws holding the latching strikes on the inside of the door frame.
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The door opening may be out of square which can happen as a home settles.
Wipe off any excess lubricant with a rag.
The inside hinge rail screws could be too tight.
Spray a silicone spray lubricant into the door s latch mechanism.
Twist the hinge rail screws a quarter turn each counterclockwise using a flat screwdriver.
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This will loosen the tension on the deadbolt allowing it to retract and the door to open.
The pella contact suggested removing the screw cover strip on the latch side and removing the 5 screws holding the latch side trim.
Find the latch rail.
The door might be difficult to latch and release if the strikes are misaligned.
Each case of stuck door can have its own challenges and solutions due to the variety of factors that can contribute to this type of situation and because of the many different door designs door hardware and door functions.
Pry off the plastic covers loosen the screws and slide the strikes up or down a few millimeters.
Loosen them a turn to relax the tension.
If either does not operate when the door is open the hardware needs to be replaced.
Lubricate the hinges with silicone spray or 3 in 1 oil.