The inside hinge rail screws could be too tight.
Pella door lock stuck.
Find the latch rail.
Pry off the plastic covers loosen the screws and slide the strikes up or down a few millimeters.
The pella contact suggested removing the screw cover strip on the latch side and removing the 5 screws holding the latch side trim.
The door opening may be out of square which can happen as a home settles.
Loosen them a turn to relax the tension.
Contacted pella storm door service at 866 809 9460.
This will loosen the tension on the deadbolt allowing it to retract and the door to open.
If either does not operate when the door is open the hardware needs to be replaced.
I cannot open my pella storm door step 1.
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Twist the hinge rail screws a quarter turn each counterclockwise using a flat screwdriver.
Spray a silicone spray lubricant into the door s latch mechanism.
Wipe off any excess lubricant with a rag.
If your door is new the hinges could be tight until they receive some use.
Pella does not have instructions readily available for fixing locked shut doors.
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.
This is a waste of time because the striker plate is still held firmly by 3 screws you can t get to.
Once the door is open operate the handle and turn the deadbolt.