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54
Table 13.
Lockout Models B, H, D and J Only - Green LED Status Codes
Green LED
Flash Code
(X+Y)
a
Indicates Next System Action Recommended Service Action
OFF No "Call for Heat" not applicable none
Flash Fast Startup - Flame sense calibration not applicable none
Heartbeat Normal operation not applicable none
3
Recycle
- Flame failed during run
Initiate new trial for ignition. Flash
code will remain through the ignition
trial until ame is proved.
If system fails to light on next trial
for ignition, check gas supply,
pilot burner, ame sense wiring,
contamination of ame rod, burner
ground connection.
4 Flame sensed out of sequence
If situation self corrects within 10
seconds, control returns to normal
sequence. If ame out of sequence
remains longer than 10 seconds,
control goes to Flash code 6+4 (see
below).
Check for pilot ame. Replace gas
valve if pilot ame is present. If no
pilot ame, cycle "Call for Heat." If
error repeats, replace control.
7 Flame sense leakage to ground
Control remains in wait mode. When
the fault corrects, control resumes
normal operation after a one minute
delay.
Check ame sense lead wire for
damage or shorting. Check that
ame rod is in proper position.
Check ame rod ceramic for cracks,
damage or tracking.
8
Low secondary voltage supply-
(below 15.5 Vac)
Control remains in wait mode. When
the fault corrects, control resumes
normal operation after a one minute
delay.
Check transformer and AC line for
proper input voltage to the control.
Check with full system load on the
transformer.
6+2
Failed trial for ignition resulting in
lockout
Remain in lockout until "Call for
Heat" is cycled.
Check gas supply line, pilot burner,
spark and ame sense wiring, ame
rod contaminated or out of position,
burner ground connection.
6+3
More than 5 ame failures during run
on the same "Call for Heat" resulting
in lockout
Remain in lockout until "Call for
Heat" is cycled.
Check gas supply, pilot burner, ame
sense wiring, contamination of ame
rod, burner ground connection.
6+4
Flame sensed out of sequence-
longer than 10 seconds
Control waits until ame is no
longer sensed and then goes to
soft lockout. Flash code continues.
Control auto resets from soft lockout
after one hour.
Check for pilot ame. Replace gas
valve if pilot ame present. If no pilot
ame, cycle "Call for Heat." If error
repeats, replace control.
ON
Soft lockout due to error detected
during self check sequences
Control auto resets from soft lockout
after one hour.
Reset by cycling "Call for Heat." If
error repeats, replace the control.
a
Flash Code Descriptions:
- Flash Fast: rapid blinking.
- Heartbeat: Constant 1/2 second bright 1/2 second dim cycles.
- A single ash code number signies that the LED ashes X times at 2Hz, remains off for two seconds, and then repeats the
sequence.
- X+Y ash codes signify that the LED ashes X times at 2Hz, remains off for two seconds, ashes Y times at 2Hz, remains off for three
seconds, and then repeats the sequence.