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