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Yellow LED
Flash Code
a
Indicates Recommended Service Action
Heartbeat Normal Flame Signal N/A
2
Weak Flame Signal -
System will operate reliably but ame signal is less than
desired.
Note: This indication may ash temporarily during or
shortly after lightoff on some applications.
Perform routine maintenance to
assure optimum ame signal.
1
Marginal Flame Signal (less than 1.1 µA) -
System may not operate reliably over time. Service call
recommended.
Note: This indication may ash temporarily during or
shortly after lightoff on some applications.
Check gas supply, pilot burner, ame
sense wiring, contamination of ame rod,
burner ground connection.
OFF
No Flame or Flame Signal -
below minimum threshold for system operation.
N/A
a
Flash Code Descriptions
- Heartbeat: Constant ½ second bright, ½ second dim cycles.
- The ash code number signies that the LED ashes X times at 2Hz, remains off for two seconds, and then repeats
sequence.
Honeywell EI Ignition Module Yellow LED Flame Codes