A.O. Smith Master-Fit 100 Series, Руководство по обслуживанию

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Servicing should only be performed by a Qualified Service Technician
TEST 8
–
IGNITER HEATS
–
NO MAIN BURNER
TEST 8 IGNITOR HEATS......NO MAIN BURNER
IF......... THEN............
Short heat up time of igniter. Check control box grounding.
Normal (Approximate 20 seconds)
warm up - no ignition.
Check for 24V from E1, Pin 12 to ground during 4 second trial.
........Yes - Continue................No - Replace Ignition Board.
No voltage present E4, Pin 12 to
ground.
Replace ignition board.
24 Volt was present from E1, Pin
12 to ground, but no main burner.
Check that air has been purged from gas circuit. Check that wiring
and connections to gas valve and E1, Pin 9 are correct. Check for 24
VAC at E1, Pin 9 to ground during 4 second trial for ignition.