1018028-B
Page 19
TROUBLESHOOTING CHART
( Specifically for Intermittent Ignition System
) -
IID
OFF
No Call for Heat
Not Applicable
None
Normal Operation
Heartbeat
Not Applicable
None
Recycle
Flame failed
during run
3
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 ignition, check gas
supply, pilot burner, flame sense wiring, contamination of
flame rod, burner ground connection.
Flame sense
leakage to ground
7
Control remains in wait mode. When the
fault corrects, control resumes normal
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.
5 minute Retry
Delay - On every
third retry on the
same “Call for Heat”
6 + 2
Initiate new trial for ignition after retry
delay completed.
Check gas supply, pilot burner, spark and flame sense
wiring, flame rod contaminated or out of position, burner
ground connection.
Flame sensed out
of sequence - longer
than 10 seconds
6 + 4
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.
Low secondary
voltage supply -
(below 15.5 Vac)
8
Control remains in wait mode. When the
fault corrects, control resumes normal
operation after a one minute delay.
Check transformer and AC lines for proper input voltage
to the control. Check with full system load on the
transformer.
On every 6th
flame failure during
run on the same
“Call for Heat”
6 + 3
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.
Startup - Flame
Sense Calibration
Flash Fast
Not Applicable
None
5 min. Retry Delay
Pilot flame not
detected during
trial for ignition
2
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 wiring,
flame rod contaminated or out of position, burner ground
connection.
Flame sensed
out of sequence
4
If situation self corrects within 10
seconds, control returns to normal
sequence. If flame out of sequence
remains 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.
Soft lockout due
to error detected
during self check
sequences
ON
Control auto resets from soft lockout after
one hour.
Reset by cycling “Call for Heat”. If error repeats, replace
the control.
GREEN LED FLASH
CODE (XxY)ª
INDICATES
NEXT SYSTEM ACTION
RECOMMENDED SERVICE ACTION
Please follow the following corrective actions in order.
