Thermador Oven F34 Error: Blower Fan Motor Replaced in San Carlos
A Thermador C301BS built-in oven in San Carlos showed error F34. I removed the oven for access and replaced blower fan motor 00440604.
Repair at a glance
| City | San Carlos, CA |
|---|---|
| Appliance | Built-in oven |
| Category | High-End Brands |
| Brand & model | Thermador C301BS built-in oven |
| Repair date | |
| Customer complaint | The Thermador built-in oven displayed error F34 on its control panel. |
| Diagnosis | The oven blower fan motor needed replacement. The recorded replacement part is blower fan motor 00440604. |
| Repair cost | $552 (parts and labor) |
| Warranty | 6 months on parts and labor |
| Outcome | Repaired |
F34 on the display
The oven display showed F34 when I arrived. To reach the blower assembly, I pulled the built-in oven out of the cabinet and removed the outer panels.
The blower motor sits behind the oven cavity with its wiring routed along the rear of the appliance. The photos show the motor before removal and the old and replacement assemblies side by side.
Replacing the blower motor
I installed blower fan motor 00440604, reconnected its wiring and secured the housing. The cabinet and surrounding panels were then prepared for reassembly.
After the oven was returned to the cabinet, the display was checked with the oven operating at 350°F. The invoice total was $552, with a 6-month warranty on parts and labor.
Photos from this repair
Error F34 on the oven display. 
The Thermador oven before removal. 
The oven pulled out to reach the outer panels. 
The oven outside the cabinet during the repair. 
The oven display after the blower motor work. 
The old and replacement blower fan motors. 
The cabinet with the oven removed. 
Rear panel and blower wiring exposed. 
The blower motor and housing during installation. 
The blower motor and wiring after installation. 
The oven opened for blower access. 
Returning the oven to the cabinet. 
The oven back in the cabinet. 
The completed oven installation.
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