Table 13.

Lockout Models B, H, D and J Only - Green LED Status Codes

Green LED

 

 

 

Flash Code

Indicates

Next System Action

Recommended Service Action

(X+Y)a

 

 

 

OFF

No "Call for Heat"

not applicable

none

Flash Fast

Startup - Flame sense calibration

not applicable

none

Heartbeat

Normal operation

not applicable

none

 

 

 

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

 

 

 

 

 

ground connection.

 

 

If situation self corrects within 10

 

 

 

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

 

 

 

 

control goes to Flash code 6+4 (see

error repeats, replace control.

 

 

below).

 

 

 

 

Check flame sense lead wire for

 

 

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

 

 

 

 

 

 

delay.

Check flame rod ceramic for cracks,

 

 

 

damage or tracking.

 

 

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

 

 

 

delay.

transformer.

 

 

 

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,

 

 

 

 

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.

 

 

 

 

Control waits until flame is no

Check for pilot flame. Replace gas

 

 

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

 

 

repeats, replace control.

 

 

after one hour.

 

 

 

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.

 

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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