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Checking for experiences with error code F24 on the above Thermador double oven. I realize the glass keypad part #474083 most likely needs replacing but some have also indicated the power relay board behind the keypad also needs to be replaced. Do both need to be replaced or just the keypad itself? I am also looking for a schematic for the above unit. Thanks for any help.
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Hello,
Does F24 occur within 2 minutes of applying power to the oven?
Do any keys work at all?
Is the bezel grounded?
Gene.
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Upon applying power the clock sign blinks, no keys respond and within 2 minutes error code F24 appears. None of the keys work and I am not sure whether the bezel is grounded (how do I test?). The top oven was used and upon pushing the stop/off key, the screen went blank. Then the clock signal began flashing and later the error code F24 flashed. Shutting power off, even for days, and then on again does not reset the system. I know Thermador says that a bad/stuck key will cause the problem. Others have also indicated that at times the relay board may also go bad when this happens. I did get to remove the control panel and press on the back of each key to see if I could unstick any stuck key but to no avail.
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I don't think it has something to do with the relay board. It is possible that the clock/display board is involved too but I would replace the glass control panel first. If your oven is 27" wide then the Part number: 474083
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Rank: Member
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Thanks, Gene. I will order the part soon (27 inch oven) and give it a try.
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I received part #474083 as suggested from Appliance Pros. The mounting screws enclosed with the panel (documentation says to use enclosed screws) do not work because the mounting brackets on the panel are not threaded. Thus the panel cannot be mounted to the control board. The old screws also do not work with the new panel since there are no threads to screw into.
I still tested installation of the new panel to determine if the panel is the culprit.
Since the screws would not work, I used twist ties to temporarily attach the panel to the control board and installed the unit back into the oven. Blinking clock, no response to keypad buttons and F24 again appears. Need more pro help with both the F24 issue as well as the issue with ineffective mounting system.
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Originally Posted by: stampede  ...Since the screws would not work, I used twist ties to temporarily attach the panel to the control board and installed the unit back into the oven... This installation is absolutely incorrect because the panel has to be very good grounded and it could be only if it is installed properly with all screws in place. In regards of your question about screws you have to talk to the APP customer service. I also will forward it to their research department. I found some Thermador instructions for this problem. You may want to verify if it may be applied to your oven: "Random keys and F24 errors can occur on rare occasions from either build ups of static on the bezel (when ungrounded) and occasionally from local AM radio stations, particularly from stations 1000KHz and above if they are located near the installation of the oven. In certain locations, the keys and F24 can happen very often, almost continuously when power is applied to the oven. This happens when located very close to an AM radio station of medium to high power." Gene.
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No radio or other possible interfering unit nearby. Unfortunately, there is no way to attach it with the screws supplied because the mounting bracket with the screw holes is very hard material and even a self threading screw from the old panel would not cut a thread. I called APP about this issue with the screws and was referred back to the forums for possible resolution. I appreciate your getting back to me so quickly on this, Gene. Frank
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Frank,
It looks to me like this problem is well known by Thermador. I believe it is a poor design issue. You may want to get in touch with Thermador customer relations department and force them to take care of it. Especially if the replacement part made by them does not fit properly.
Gene.
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Rank: Member
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I received a second part and was able to replace the panel with the screws tight. The new touch panel did not do the trick-still get flashing clock with no touchpad response, then flashing error code F24.
I did contact Thermador about their part that had no threaded screw holes and the customer service put their head in the sand-would not even discuss it or recognize it-just referred me to a local repair company.
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