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Burnham SCG 1100-H4 User Manual

Page 67

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7

Green LED

Flash Code

(X + Y)

a

Indicates

Next System Action

Recommended Service Action

OFF

No “Call for Heat”

N/A

None

Flash Fast

Startup - Flame sense

calibration

N/A

None

Heartbeat

Normal operation

N/A

None

2

5 minute Retry Delay-

Pilot flame not detected

during trial for ignition

Initiate new trial for ignition after retry

delay completed.

If system fails to light on next trial

for ignition check gas supply, pilot

burner, spark and flame sense wir-

ing, flame rod contamination or out

of position, burner ground connec-

tion.

3

Recycle- Flame failed

during run

Initiate new trial for ignition. Flash

code will remain through the ignition

trial until flame is proved.

If system fails to light on next trial

for ignition check gas supply, pilot

burner, flame sense wiring, flame

rod contamination, burner ground

connection.

4

Flame sensed out of

sequence

If situation self corrects within 10

seconds, control returns to normal

sequence. If flame out of sequence re-

mains longer than 10 seconds, control

goes to Flash code 6+4 (see below)

Check for pilot flame. Replace gas

valve if pilot flame present. If no

pilot flame, 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 nor-

mal operation after a one minute delay.

Check flame sense lead wire for

damage or shorting. Check that

flame rod is in proper position.

Check flame 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 nor-

mal operation after 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

5 minute Retry Delay-

On every third retry on

same “Call for Heat”

Initiate new trial for ignition after retry

delay completed.

Check gas supply, pilot burner, spark

and flame sense wiring, flame rod

contamination or out of position,

burner ground connection.

6 + 3

On every 6th flame

failure during run on the

same “Call for Heat”

5 minute retry delay, then initiate new

trial for ignition.

Check gas supply, pilot burner, flame

sense wiring, contamination of flame

rod, burner ground connection.

6 + 4

Flame sensed out of

sequence- longer than

10 seconds

Control waits until flame 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 flame. Replace gas

valve if pilot flame present. If no

pilot flame, 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 ½ second bright, ½ 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 2

Hz, remains off for three seconds, and then repeats the sequence.

TABlE 1: GREEN lED STATUS CODES