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Test Oven Burners
Remove the oven bottom cover. Remove the 4 screws
that attach the cover to the bottom of the oven, then lift
the cover and angled baffle plate out to expose the U-
shaped bake burner.
Test Bake Burner Ignition
Set the oven to BAKE at 350°F. After a short delay, the
burner will ignite. The burner will stay lit until 350°F is
reached and then shut off. From this point forward, the
burner will cycle on and off to maintain the tempera-
ture.
Test Bake Burner Flame
While the bake burner is lit, inspect the flame. See
Figure 9 for proper flame characteristics. If the flame
burns completely or mostly yellow, it is necessary to
adjust the bake burner air shutter. See Figure 10 and
the Flame Adjustment procedure in the following
section.
Test Broil Ignition
Set cooking mode to BROIL. The broil burners will
ignite after 30-75 seconds.
NOTE: The two infrared ceramic broil burners do not
have air shutters, so no adjustment is provided.
Replace oven bottom cover. Slide cover into place
and reattach to bottom of oven cavity.
Flame Adjustment (if necessary):
Tube-style gas burners used in Thermador© appli-
ances have air shutter systems which are similar to
the illustration in Figure 10, and can be adjusted using
the following method (unless adjustment is not rec-
ommended). It is necessary to
remove the burner
from the appliance in order to perform air-shutter
adjustments.
• Loosen shutter screw(s) and turn shutter to new
position.
• Adjust the shutter to more-closed position if the
flame is lifting or blowing, or is not carrying over.
Adjust the shutter to more-open position if the
flame is too yellow. (See Figure 10.)
• Re-tighten the shutter screw(s).
• After adjustment, re-install the burner and perform
flame evaluation. The air shutter must fit over the
orifice hood for proper operation of the burner.
• Repeat procedure as needed until flame char-
acteristics are acceptable. (See Figure 9.)
Step 9: Burner Test and Adjustment
17
Air
Shutter
Screw
More Open:
Less Yellow Flame
More Closed:
Less Blue Flame
More Carryover
Less Lifting or Blowing
Air Shutter Adjustment (if necessary)
FIG. 10
WARNING
Burner adjustments must be performed by a
qualified technician. Improper adjustments may
cause harmful by-products or void the
appliance's warranty.
Allow burners to cool before attempting to
remove them!
Call Thermador® if:
1. Any of the burners do not light.
2. The broil burner or bake burner flame goes
out before the oven heats to the desired
temperature.
3. Any of the burners continue to burn yellow.