Door won't open; have already checked lock and it is unlocked.

Opening the door while the oven is cooking will greatly shorten the life of the door switches and lead to failure.
Always hit "Stop" first unless the recipe calls for it.
The instructions for the child lock are in the owner's manual.
To set the lock, press Stop/Clear, then hold the "0" pad for more than four seconds. You will hear two beeps and the display will show "LOCKED".

To unlock, hold the "0" pad for more than four seconds. You will hear two beeps and the display will no longer show "LOCKED".

Possible that the door switch is broken or jammed,. You need to remove the top cover, open the panel and remove the door and switch , check for broken plastic or lock, If so use glue to stick and reset.

Possible that the lock was broken and so the door opened. You can remove the front panel and check for broken plastic or nylon pieces which can be glued using instant adhesive.
Reset the lock and switch and the door must lock in correctly

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.

The F9 error code refers to the door latch. The problem seems to be with the latch motor or a switch associated with the motor. If I am reading your question correctly you say that it would not unlatch and then upon resetting it unlatched but the oven won't work and you still get the error code. If so try resetting again but have someone come out to check it out or you will continue to have this problem.

The F9 indicates one of two possible problems. One you have already done and the other is the door lock mechanism. If the lock mechanism got stuck in between the lock and unlock neither switches on the lock mechanism are closed. This could be caused by a post on the lock mechanism that has failed.

I just looked up the part for the door lock and it is no longer available, with no other source for the part.

So I guess I would suggest having a technician come out and see if he can see if the lock mechanism can be fixed so the oven will work but you will no longer have the clean cycle working.
They may or may not want to do this for you, but you could use a local service company and they may be able to make it so you can use your oven.

I hope this helps (remember to rate and comment this answer).

If after self cleaning cycle the over door is not getting open.Then in some cases the door latch gets locked and this latch stops functioning so the door does not get open.In this case the front door assembly has to be disassembled and the door latch,it has to be manually triggered/pushed by a screw driver or any such object.So the door latch releases the door to get open.Then refit the parts and check,if the door latch is not functioning as it should be.Then the door latch assembly has to be replaced.After self cleaning,many a times the door latches gets overheated and its connections gets short internally.This is noticed by many other users too.In some cases door latch just gets blocked and triggering it with screw driver,makes it function properly.So disassemble the door and see the condition of door latch.This will help you to decide whether its just locked or got faulty.------------If its got faulty and you require door latch part,then you can get it from the online sites like www.repairclinic.com or from searspartsdirect site.
---------------- This should help.Thanks.Helpmech.

I recommend this site to start.
http://watersgulchdigital.com/tips/ge_oven_unlock.html

I would type it, but why when the information is already available.
Good luck

An F9 error code on a General Electric oven indicates that the oven's electronic control system has detected a problem with the automatic door lock. The automatic door lock mechanism prevents the oven door from being opened when the oven is set for "Clean" mode. The malfunction may be a jammed door lock mechanism, a pinched or broken wire, a faulty lock switch or a fault in the control board itself.

Things You'll Need:

• Ohmmeter or multimeter
• Phillips screwdriver

#step1

Disconnect power to the oven.
#
Step 2

Open the oven door. Remove three screws from underneath the oven's control panel. Lift the control panel straight up to disengage the mounting pins on the top corners of the panel, then tip the panel toward you.
#
Step 3

Inspect the door lock mechanism. The mechanism is in the lower left area of the space behind the control panel. Rotate the cam on the door lock mechanism to be certain it moves without binding. Replace the mechanism if its mechanical parts do not function properly.
#
Step 4

Inspect the wires that connect the door lock mechanism to the control panel. Check for pinched or broken wires. Check for wires with frayed insulation. Repair wires as needed if defects are present.
#
Step 5

Locate the six-pin connector on the door lock motor on the right end of the door lock mechanism.
#
Step 6

Rotate the cam on the door lock mechanism to the unlocked position. Test the resistance between Pin 3 and Pin 1 of the door lock connector with the ohmmeter. The resistance should be 0. Replace Lock Switch 2 of the door lock mechanism if the resistance reads other than 0.
#
Step 7

Rotate the cam on the door lock mechanism to the locked position. Test the resistance between Pin 3 and Pin 2 of the door lock connector with the ohmmeter. The resistance should be 0. Replace Lock Switch 1 of the door lock mechanism if the resistance reads other than 0.
#
Step 8

Contact a certified repair facility if the source of the F9 code has not been discovered.
Troubleshooting the oven with the electric power turned on is a job for a certified technician.

Do not perform troubleshooting on the oven with the power connected. Personal injury and damage to the oven can result.

open the cover of the oven you can see see the lock near the key pad. Press the lock the door will open. You can adjust the alignment by refixinfg the screws.