Bosch Oven fan not working

When your Bosch oven fan is not working, start with the control board, which supplies voltage to the fan motor and other electrical components. This is a common cause of an oven fan not spinning, but test before replacing it because a seized motor can produce the same symptom. Turn the fan blade by hand. If it does not turn freely, the fan motor bearings may be seized. If the blade turns freely and the motor has electrical continuity, the control board may be defective. Next, check the cooling fan, which protects the Bosch oven and its components from overheating. Replace the cooling fan assembly if it has power but will not run or the blade is difficult to turn. For a convection oven fan not working, inspect the convection motor and test it for continuity. A failed main control board, exhaust fan motor, or blower motor can also cause an oven fan not working problem. Check the wiring diagram before replacing any control board, since these parts are often misdiagnosed. Enter your model number to find the exact replacement part for your Bosch oven.

01 - Bosch Range/Stove/Oven Control Board

An oven's control board sends voltage to nearly all of the oven's electrical components. If the control board is defective, the voltage may not be sent to the fan motor. You should first attempt to rotate the fan blades by hand. If they do not turn freely, it's likely the fan motor bearings have seized and the fan motor will need to be replaced. However, it the fan blades do turn freely and a multimeter shows that the motor itself tests positive for electrical continuity, then the control board is probably at fault. You can inspect the board for signs of damage or a shorted component and replace if necessary.

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02 - Bosch Range/Stove/Oven Cooling Fan

The cooling fan runs to help keep the range itself and its critical parts from overheating. The cooling fan is often sold as an assembly. If the fan does not turn freely or has power to it but won't run, it will need to be replaced.

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03 - Bosch Range/Stove/Oven Convection Motor

In a convection oven, the convection motor drives the convection fan to circulate the air inside the oven. If the convection fan isn't circulating the air, the oven won't bake evenly. Try turning the convection fan blade by hand. If the blade is hard to turn, this may indicate that the motor bearings are worn. If the motor bearings are worn, you will have to replace the convection motor. To determine if the motor is defective, use a multimeter to test it for continuity. If the motor does not have continuity, replace it.

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04 - Bosch Range/Stove/Oven Main Control Board

If the oven fan is not working, the main control board may not be sending power to the fan motor. Check the wiring diagram first before replacing the board. Control boards are often misdiagnosed.

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Highly Likely

05 - Bosch Range/Stove/Oven Exhaust Fan Motor

If the exhaust fan motor has power to it but it's not turning, the windings or bearings may be bad. Try turning the fan blade by hand. If the fan blade does not turn freely, or the motor keeps shutting off when it has power to it, the exhaust fan motor will need to be replaced.

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Highly Likely

06 - Bosch Range/Stove/Oven Blower Motor

If the blower motor's fan blades or blower wheel do not turn freely by hand, it's likely the motor bearings have seized and the blower motor will need to be replaced. You can also use a multimeter to determine if the motor has electrical continuity. If the motor has no electrical continuity, the part is definitely defective.

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Common

Frequently Asked Questions

Why is my Bosch oven fan not working?

How do I know if the Bosch convection fan motor is bad?

What should I check if my Bosch oven cooling fan is not working?

Could a Bosch oven control board cause the fan not to work?

How do I find the correct Bosch oven fan or motor replacement part?

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