Replacing The Bake Burner Hot Surface Igniter - Large Oven - Thermador PRL304EG Service Manual

Service Manual for Thermador Pro Grand LP Gas Ranges, Models: PRL304EG, PRL364EDG, PRL364ELG, PRL366EG, PRL484ECG, PRL486EDG, PRL486EDPG, PRL484ELG
Gas Leak Testing
With electrical power off, carefully check for gas leaks at each gas
component that was removed, replaced, or otherwise serviced using a
gas leak detector or bubble test.
4.7.6.2 Replacing the Bake Burner Hot Surface Igniter – Large
Oven
In some range models a hot surface igniter (HSI) ignites the bake
burner, while in other models an electrode ignites the bake burner.
For the models that use the electrode as an igniter as well as the
models that use the HSI as an igniter, the electrode also functions as
a flame sensor – that is, if the electrode does not heat up enough in a
short time frame, the electrode will close the solenoid valve to avoid
gas build-up in the burner.
Be sure to check QuickFinder for relevant information, documentation,
and the correct part number when replacing this component.
1. Perform all steps in Replacing the Bake Burner – Large Oven,
page 97.
2. From the back of the range remove the crossmember panel
(see Crossmember Cover Removal and Replacement, page 75)
3. From the back of the range detach the HSI wire connector
(see Figure 200).
4. [Only on specific models]: Remove and retain the two screws
securing the HSI shield onto the burner box chassis, and then
remove the shield (see Figure 201).
58300000156573_ARA_EN_B
Figure 200: HSI Wire Connector (Shown Detached)
Figure 201: HSI Shield
5. Remove and retain the screw that secures the HSI onto the
chassis (see Figure 202, page 101), and then remove the HSI and
its small bracket (see Figure 203, page 101). Be careful so that
the small bracket doesn't fall into the burner box.
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