Step 10: Main Burner Test - A.O. Smith BTR 120-400 Service Handbook

STEP 10: MAIN BURNER TEST

CONDITION:
• Pilot flame Noted, Main burner Check.
Visually check for main burner.
IF
The main burner ignites:
The main burner does not ignite.
26 Servicing should only be performed by a Qualified Service Technician
THEN
• Sequence is complete.
• Check gas supply.
• Check gas control valve operation before replacing.