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My single oven model number is SEC301BS/03 and it displays error code F34 after about 60 seconds. I have checked the fan speed as advised and it is 3060 rpm. I have checked the wiring from the hall effect sensor to the circuit board and that seems to be in order. Please advise what the next step should be to solve this problem.
Roy
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Roy,
Looks like 3060 rpm is out of range. Try to clean the fan blades and the air ducts as recommended by Servicer on the previous page.
Gene.
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Gene: Thank you for the suggestion to clean the fan. After your post, I vacuumed the fan and the speed was reduced from 3060 RPM to 3000 RPM and the F 34 error has not been repeated. I was under the impression that a clean fan would run faster, not slower, so that is the reason that I didn't clean it before. If 3000 RPM is the top speed before the error message, there is not much margin for an increase in top speed with my oven. Thanks again.
Roy
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You are welcome Roy. I'm glad the fix was that simple.
Gene.
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I have a thermador 27" wall oven with warming drawer and microwave with the cooling fan posted earlier in this thread. I have been getting the F34 fault sporadically. I used the keycode here to get the tachometer of the cooling fan and it was 3060 or higher. When looking at the fan from the front of the unit there is a strip of grease on the right half of the duct fan and there was lots of dust/grease in the space. I did the best I could to clean/vacuum the space from the front but the tach is still around 3000 and sometimes at 3060 but haven't gotten the fault in a few days. I have another 30" thermador wall oven whose cooling fan runs consistently at 2860 RPM. Any ideas how to better clean the fan from the front without taking the whole unit out?
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Originally Posted by: DHP  I have a thermador 27" wall oven with warming drawer and microwave with the cooling fan posted earlier in this thread. I have been getting the F34 fault sporadically. I used the keycode here to get the tachometer of the cooling fan and it was 3060 or higher. When looking at the fan from the front of the unit there is a strip of grease on the right half of the duct fan and there was lots of dust/grease in the space. I did the best I could to clean/vacuum the space from the front but the tach is still around 3000 and sometimes at 3060 but haven't gotten the fault in a few days. I have another 30" thermador wall oven whose cooling fan runs consistently at 2860 RPM. Any ideas how to better clean the fan from the front without taking the whole unit out? I don't think it is possible to do it good without removing the oven from the cabinet. Gene.
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I have no experience with appliances, but followed these suggestions, vaccuumed the fan inlet (below the oven door) and my rpms went from 3060 to 3000. This seems to have solved the problem (in about 5 minutes!). When I have a little more time I'll pull the oven and clean it better, but this seems to be working for now. Thanks everybody! Jeff Originally Posted by: Servicer Thanks, Gene.
Also, any dust built up on the fan blades will cause the fans to spin too fast, causing an F34/F64.
Here's a test you can do:
1) Turned off the unit
2) At the same time, press and hold the "Start" and "Fast Preheat" buttons. Keep holding the buttons until the display changes to zeros.
For Single Ovens:
3) Press Bake
4) Press Start
For Double Ovens:
3) Press "Upper Oven", or "Lower Oven" if the code is an F64.
4) Press Bake
5) Press Start
At this point, the fan starts and the clock turns into a tachometer and shows you your fan speed.
I've seen where cleaning the dust from the ducting and fan blades have dropped the fan speeds by 200 rpm, taking the speed from ~3060 to ~2860.
KC
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For the F34 error, if cleaning dust from grill and plenum from front (top is intake, bottom is exhaust) is not enough to get below 3060, you will need to clean the squirrel fan vanes. Not so hard to do. Remove oven. Take off the back top plate (back plenum cover, must remove screws on front and back plenum cover). This gives access to fan cage and motor. The squirrel fan vanes can be removed from cage without removing motor or cage. A rubber encased bearing can be lifted off from the left side, freeing the squirrel fan vanes on that side. The tilt and ease out the fan vanes and the rubber attachment to the motor will allow it to bend and be removed. Now you can wash the vanes with detergent or oven cleaner until they are like new (we scrubbed with toothbrush). Dry, reassemble, and test again. We dropped down from 3060 limit to 2940. Only a limited margin for error, but everything was fully operable again. And saved $180 repairman would charge to replace it, which is what they suggested, even though they knew it was due to the fan being dirty.
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Does anybody have any additional information on how to remove the oven form the wall to access the fan?
I've removed 4 screws, 2 from the left panel and 2 from the right panel. Oven will not budge. Not sure If I just need to use a little more effort, or if there are other screws that need to be removed.
Thanks,
Chris
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Originally Posted by: scottc11 Does anybody have any additional information on how to remove the oven form the wall to access the fan?
I've removed 4 screws, 2 from the left panel and 2 from the right panel. Oven will not budge. Not sure If I just need to use a little more effort, or if there are other screws that need to be removed.
Thanks,
Chris I answered my own question - just needed a little more effort. The 4 screws are all that is needed to remove the oven.
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