Thermador Pro Harmony PRL364GDH/01, Service Manual, Page: 11 / 68

Service Manual for the Thermador Pro Harmony Range, Model PRL364GDH/01
58300000154022_ARA_EN_D
Page 11 of 68
3.2 Burner Characteristics
If one or more burner blows out, the respective igniter electrode
automatically re-ignites the flame.
At each burner port the flame should burn completely around the
burner cap.
It is normal to hear the following during burner operation:

A slight sound that is associated with gas combustion and
ignition. There should not be a loud noise.

A clicking noise every time the gas cycles, coming from the
solenoid valves of the two left burners

For LP gas, a slight “pop” sound may be heard at the burner ports
a few seconds after the burner has been turned off
NOTE: If burner characteristics are not adequate, see Burner, Flame,
and Ignition Troubleshooting , page 13.
3.2.1 Flame Characteristics
LP gas: Slight yellow tips on the primary flame cone are normal and
may appear after a few minutes. The flame should be stable with no
excessive noise or fluttering. Orange colored streaks in the flame are
produced from burning airborne debris, which is normal at startup,
and should dissipate in a few minutes (see Figure 9).
When the flame is properly adjusted, it should burn at each burner
port, completely around the burner cap (see Figure 8).
NOTE: If flame characteristics are not adequate, see Burner, Flame,
and Ignition Troubleshooting , page 13.
Figure 8: Burner Ports
Figure 9: Additional Flame Characteristics