Door won't open

Try this link ... owners manual ... go to page 15

https://www.searspartsdirect.com/partsdirect/user-manuals/gsc309pvs02-whirlpool-parts-manual

It shows how to remove the door and talks about how to release the latches.
It sounds like whomever cleaned it ... may have removed the door and not reinstalled it correctly??
Helpful?

Microwave doors are very important have contact switches that switch off if open or damaged. Interfearing with the door could lead to serious injury. The best way to sort doors tha wont open or close is to replace with old doors of the same make that does not have the same problem.

One of the door latch arms or the latching mechanism inside the oven have broken. you may have to buy a complete door lock / latching assembly . Might not be worth it. Check with your nearest parts supplier.

see this causes and fix it. God bless you
Open Lever If the microwave door won't open the open lever might be broken. This part can be replaced separately.

Door Spring If the microwave door won't open the door spring may have broken. The door spring is located inside the door and keeps downward pressure on the door hook.

Door Latch If the microwave door won't open the door latch might be broken. The door latch is inside the microwave. The door hook, which is part of the door, engages with the latch to keep the door closed during operation. If the door latch or actuator breaks the door may not open.

Door Hook If the microwave door won't open the door hook might not be releasing properly. The door hook is installed inside the door and normally releases when the door is opened. The hook is made of plastic and will break over time. When this happens it will need to be replaced, it can't be repaired.

Button Spring If the microwave door won't open the button spring might be broken internally. The button spring can be replaced.
Button If the microwave door won't open the button might be broken internally. The button can be replaced.

Handle Actuator If the microwave door won't open the handle actuator might be broken. This is a plastic part which can become brittle over time. This part is connected between the door button and the door latch assembly.

Hello,To get the door open and salvage your dinner, take a long thin blade ( I used a frosting spreader) and insert from the bottom between the door and the oven frame on the side with the latches (usually next to the control panel). You may have to pry the bottom of the door open just a bit. The object is to push up the lower door latch (which is connected to the upper door latch) and manually open the door. You may have to try a few times but this worked perfectly for me and saved dinner. Obviously the door latch needs to be repaired but this solves the immediate problem of dinner being held hostage by a recalcitrant microwave.
wish you good luck,
take care.

IMHO this is an expensive microwave and it is pretty poor that the door mechanism is so weak considering that it gets constant stress from opeing and closing the door and especially since the part that breaks is integral to the expensive control panel. I have the same problem with my microwave after only 2 1/2 years of use. After some fiddling I got it apart as follows. Remove the three screws that hold on the top grille (above the door) on and lift off the grille. Turn off the power to the microwave at the switch panel. Remove the two screws above the control display that are now visible after removing the top grille. Do NOT pry this panel off, slide it upwards to unlatch the hooks and lift it off carefully. There are a lot of wires which you will have to unplug (note their locations although none of the plugs are interchangeable) and separate the panel from the microwave. You can now check the latch itself and open the door by putting your finger under the lift latch and genly pushing upwards. If the door won't open the problem is in the latch mechanism which can be removed by taking out the two screws on the inside of the case an unplugging the many wires (note locations, a couple of them can be plugged back in the same place). If the problem is the same as the one I had it is in the actualy release button assembly where one of the brackets are broken. You will either have to replace the whole display & control panel or glue the bracket back together. I'm in the process of trying to glue it with epoxy but I can't vouch for how reliable the repair will be. Remove the screws that secure the control panel metal reinforcement and unplug the flat cable then remove it carefully. If either of the plasting pivot brackets moves it is broken. With the metal plate removed the problem should be obvious.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

The door latch mechanism is all plastic and commonly breaks. You have to take the cover off and work on it from the inside.

check door open mechanism, any broken change the mechanical parts,