Service Manual for the Thermador Pro Harmony Range, Model PRL364GDH/01
58300000154022_ARA_EN_D
Page 14 of 68
Hot Burner Components
Always use a pot holder to handle a hot burner cap, Venturi tube, or
any other burner assembly component to prevent injury.
Figure 12: Problematic Burner
– on High with Gaps and Uneven Flame
(Left Image) and on Low (Right Image)
1. Check if the burner cap is properly installed.
2. If problem persists, switch the burner cap with one from a burner
that is operating correctly. If problem is still not resolved, proceed
to the next steps:
3. Remove the star burner top and then the pedestal burner base per
Removing Knobs, Grates, Griddle, and Burner Assemblies
4. Make sure the jet assembly is correctly seated so that the raised
part protrudes through the respective contour on the maintop
(see Figure 13) and that the electrode ignition wire moves freely
through the hole in the maintop (see Figure 24, page 20).
5. Reinstall the pedestal burner base (without the Venturi tube). Be
careful not to over torque the screw on the pedestal burner base.
6. Insert the Venturi tube inside the pedestal burner base and make
sure it can slide up and down freely without grinding or catching
(see Figure 14).
7. Reinstall the rest of the burner assembly, and test the flame on
low and high settings.
Figure 13: Incorrect Jet Assembly-to-Maintop Alignment (Left Image)
and Proper Jet Assembly-to-Maintop Position (Right Image)
Figure 14: Pedestal Burner Base
– Jet Centered Inside Venturi Tube
3.5.2 Ignition Diagnostics
The following flowchart applies in the event a burner fails to ignite.
Before performing steps in the Cooktop Burner - Ignition Diagnostics
Flowchart (Figure 15, page 15), remove electrical power from
appliance during disassembly and during removal and installation
procedures. Restore electrical power when testing the unit if it is
reassembled.