Troubleshooting Burner/Flame, Ignition, And Elements; Burner And Flame Diagnostics For Rangetop Burners; Ignition Diagnostics For Rangetop Burners - Thermador PRL304EG Service Manual

Service Manual for Thermador Pro Grand LP Gas Ranges, Models: PRL304EG, PRL364EDG, PRL364ELG, PRL366EG, PRL484ECG, PRL486EDG, PRL486EDPG, PRL484ELG
Figure 17: Removing the Bezel Mounting Screws
1 Bezel mounting screws (2)
Figure 18: Accessing the Bypass Screw on the Valve
1 Bypass screw access location (shown with bezel
mounting screws and bezel removed)
58300000156573_ARA_EN_B
3.7 Troubleshooting Burner/Flame, Ignition, and
Elements
3.7.1

Burner and Flame Diagnostics for Rangetop Burners

If a rangetop burner clicks (sparks) constantly or if burner doesn't light
correctly and/or has inadequate burner/flame characteristics (per
Rangetop Burner Characteristics page 12 and Rangetop Flame
Characteristics page 13), then do the following:
 Check if the manual shut-off valve is open and the unit is receiving
gas.
 Check if the burner cap is properly aligned on the burner base.
 Check if the burner port is open and not clogged or blocked.
 Check if the igniter electrode is free from debris and is sparking.
 If it is suspect that air is in the gas supply lines and system, you
can purge the remaining air by operating one of the burners for
several minutes.
 Check if a fuse has blown or a circuit breaker has tripped.
 For constant sparking, check wiring connections at ignition (spark)
module and electrode, and also check grounding
 Refer to the Ignition Diagnostics, page 16.
 Call Thermador technical support at (800) 444-9091 for assistance
if any burners fail to light, or any burners continue to burn yellow.
3.7.2

Ignition Diagnostics for Rangetop Burners

The following flowchart applies in the event a burner fails to ignite.
Before performing steps in the Rangetop Burner - Ignition Diagnostics
Flowchart (Figure 19, page 17), remove electrical power from
appliance during disassembly and during removal and installation
procedures. Restore electrical power when testing the unit if it is
re-assembled.
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