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Anyone know exactly what and error code of F 34 is on a Thermador wall oven? Or better yet where

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Old 02-18-2011, 03:26 PM
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Anyone know exactly what and error code of F 34 is on a Thermador wall oven? Or better yet where i can get all the fault codes? Thanks.

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Old 02-18-2011, 04:37 PM
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What is the complete model number of the oven?

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Old 02-19-2011, 05:52 PM
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The F34 errors have to do with air flow or fan speeds, and is specific to the upper ovens.

The older units, prior to ~ 2003, had air switches that would move forward and close when the fans would start and push air across the paddles.

The newer units have hall-effect sensors on the fans which read the fan speeds. If the fan speeds are out of the hi/low parameters, which are 1000-3000 rpm, the f34 will appear, regardless if you're running the upper of lower oven.

The model and serial number will help determine which system your unit uses.
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Old 02-19-2011, 09:17 PM
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Quote:
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What is the complete model number of the oven?

Gene.
MODEL - SEC301BS/01
SERIAL - FD 8506 00033
THANK YOU!
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Old 02-20-2011, 08:33 AM
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MODEL - SEC301BS/01 FD 8506 00033
THANK YOU!
There was nothing to designate that the "FD 8506 00033" was the Serial or a part of the Model number. I've hunted around a bit and all I've seen suggests that this Thermador is possibly a Whirlpool with the Model starting with SEC...?
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Old 02-20-2011, 01:36 PM
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This unit was definitely made by Thermador in June of '05. All of the "SEC" used hall sensors.
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Old 02-20-2011, 07:18 PM
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Quote:
Originally Posted by Servicer View Post
This unit was definitely made by Thermador in June of '05. All of the "SEC" used hall sensors.
OK...so what does the F34 code mean?
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Old 02-20-2011, 07:21 PM
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This is a single wall oven if that matters....where could i find the list of fault codes for this particular unit?
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Old 02-21-2011, 02:59 PM
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OK...so what does the F34 code mean?
As per Servicer, the "F34" error code means the oven control senses the cooling fan is not operating within tolerance. The hall effect sensor is a part of the motor assembly and is not supplied as a separate part.

You may want to inspect all air ducts first to make sure there is nothing obstructing the air flow.

- The cooling fan assembly Part number: AP3777884

Part number: AP3777884



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Old 02-22-2011, 08:52 AM
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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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