Question about Thermador C302U Electric Double Oven

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Door is locked- F53 Error

After using the microwave I noticed that the timer wasn't counting down. I stopped the unit and could hear the door lock trying to unlock but it never would unlock. I flipped the breaker several times and no luck. The 1800 line said in order to access the control panel to pull out the oven. Well the door is locked and it is covering the screws holding the oven in the cabinet. HELP!

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Re: Door is locked- F53 Error need to replace the lock, but first you need to get the darn think open. I looked at it, couldn't figure out how, and left it. My 14 yr old starting looking at it (after the kids had their TV, Ipod, etc taken away from him for the weekend.....) and he took a coat hanger from the side to pull the latch open.
The rest is straightforward sheet metal disassembly except for the front panel...label the connectors with a piece of tape before you pull the cables connecting the front panel (unless you are able to read a schematic). You can buy the part from
AP2836100 (486324) Latch, door (microwave)
for about $ day delivery, and your ready to cook your Christmas goose!

Posted on Dec 22, 2007

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My Kenmore Elite oven door is locked and I am getting an F93 error message. I have had repairmen here 3 times already to fix the problem. Can you help?

The F93 - Maximum oven door lock time exceeded. First thing to try is holding the clear button down for 3-5 seconds sometimes this unlocks the door and then leaves the loc light still on in this case you would open the door and once again hold down the clear to make the loc light clear. If your unit doesnt have a clear button then you would hold the stop button for the same amount of time as described above. If this doesn't work try shutting off the power at your electrical breaker for 7 minutes this usually causes the control to reset in the unit. If you have any further questions or if this does not work to allow you to be able to open the door and clear the error code message me back for further diagnosis. Thanks

Sep 03, 2011 | Ovens

1 Answer

Oven door wont open code f53 thermador how can i get it open food is in it


Welcome to FixYa.

The "F53" error code on your Thermador "C" series ovens indicates a upper door lock fault, makes sense since that is the issue you described.

Whether there is actually a fault with the lock remains to be seen. Here is what I`d suggest you try...

Locate the service panel for your oven ( should be an isolated 40amp breaker ) and turn it off for a few moments and turn it back on.

This will initiate the start-up sequence which activates and checks the controls and lock assembly, hopefully resetting it to the "open" position and subsequently eliminating the error code.

Let me know how that works or if you require further assistance.

Thanks for choosing FixYa and good luck.


Macmarkus :)

Sep 29, 2010 | Thermador C302U Electric Double Oven

1 Answer

721.646662 microwave runs 5 seconds & gets f9 error code


Thanks for using FixYa. F9 error in your oven/range indicates an issue with the door locks assembly and/or the door latch. To start with check the door lock circuit, you can also try to jump start it to see if it's working. If it's not working then the Electronic Range control has gone bad and should be replaced, if it is working then the door lock circuit should be replaced. Please do rate the solution if the issue is resolved or post a comment for further assistance.


Sep 16, 2010 | Kenmore Ovens

2 Answers

Oven model 790.49072400 sn#NF52117116 is beeping at me, with the door locked. I can't unlock it. All happened when I was trying to set the timer. clear/reset is right next to door lock.


There might be many reasons for the same. First, Unplug the same for few minutes and then Turn it back ON. Check, if the problem is solved.

If not, let me know along with few details :-

1. Do you see any error message ?
2. Is there any Self Clean option in this Model.If yes, have done that before all this happened?
3. Is this a permanent or intermittent issue?
4. What have you done to fix this?
5. How old this oven is?
6. Do you hear any humming noise?

Let me know, once done.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Oct 23, 2009 | Kenmore Ovens

1 Answer

From "bake" mode, oven door locked, both heating elements on.

The F3 E2 error code indicates that the electronic oven control board in the range senses an over-temperature condition in the oven.

This can be caused by a failed temperature sensor probe, a wiring problem between the sensor and the control board, or a failed electronic oven control board.
If the oven is apparently not overheating when this error code appears, then your likely failure is the temperature sensor probe.
If the oven is overheating, then you likely have a failed electronic oven control board due to a stuck relay not cycling the oven heating element off properly.

For replacement parts - head on over to or and enter in your full model number for a full parts listing.
I recommend both sites because ...

FixYa has no affiliation with either site - I have been using and recommending them for years - trouble free.

PartSelect has a great schematic database for locating the part on your unit and great "testimonials" for each part that often times includes HOW-TO information.
RepairClinic has pictures of each part they sell and also a great how-to and troubleshooting for basic repairs.

If your unit has never been serviced - there should still be an original service manual enclosed in plastic taped to the inside of the shell.
In the service manual are Error codes, maintenance procedures, and troubleshooting steps you can follow.

Anything too complicated or beyond your scope should be handled by a professional.

If you think you want to tackle the repair - and have gotten stuck on a step - reply to your question and I will be glad to help you out.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question$%^

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1 Answer

Kenmore oven locked

Hello dktshopping,
I know you probable don't want to hear this but in you circumstance, I think you would be better off to contact a repair professional. Those oven door locks are meant to keep the door from opening during the oven's self-cleaning cycle. They are both mechanically and temperature controlled so that the door can not be opened when the oven is 950 degrees. It sounds to me as though something is not releasing to allowing the locking mechanisim to disengage from the door even though the lever is in the unlock position. The unit will probably have to be taken apaprt to remedy the problem. Good luck.

Nov 29, 2008 | Kenmore 40494 / 40495 / 40499 Electric...

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Microwave oven stopped working

This is most common in over the range microwaves. Cooking grease migrates into the door switches, resulting in the symptoms you list. Replace the door primary and secondary interlock switches and you should be cooking again. NOTE: be careful not to touch other wires! Even with the unit disconnected from power, if you happen to have a bad bleeder resister in the high voltage capacitor you can still get a nasty zap !

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Self cleaning won't shut off

that is because it needs to cool down before the oven will unlock.There should be a timer running and when it gets to "zero" it should unlock.

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send me am e mail at with the model number

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