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9. TROUBLESHOOTING
9.1 Symptoms
What follows is a chart of Symptoms and Possible Causes to aid in diagnosing faults with the Clamshell®.
Refer to the Symptoms column to locate the type of failure then to the Possible Cause for the items to be
checked.
To test for a possible cause, refer to the TEST section and locate the Possible Cause then refer to test to
identify test procedures.
SYMPTON POSSIBLE CAUSE
Igniter not sparking • Failed spark module
• Failed tilt switch
• Failed air switch
• Failed motor blower
• Failed transformer
• Failed spark electrode
Spark but no ignition • Failed spark controller
• Failed gas solenoid valve
• Clamshell® gas valve turned off
• Plugged orifice
Clamshell® turns off after extended use • Incorrectly adjusted sense electrode
Taking too long to light • Incorrectly adjusted spark electrode
• Plugged enrichment orifice
• Plugged burner tiles
Hazy blue flame on tile face • Incorrectly adjusted air shutter
• Leak in air path to burner face
• Incorrectly adjusted gas regulator
Not hot enough • Incorrectly adjusted gas regulator
• Plugged main burner orifice
• Plugged burner tiles
Clamshell® not turning off • Failed tilt switch
• Failed gas solenoid valve
Blower runs continuously • Normal operation