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TROUBLESHOOTING CHART ( Specically 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
ame is proved.
If system fails to light on next trial ignition, check gas
supply, pilot burner, ame sense wiring, contamination of
ame 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 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.
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 ame sense
wiring, ame rod contaminated or out of position, burner
ground connection.
Flame sensed out
of sequence - longer
than 10 seconds
6 + 4 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.
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
ame 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, ame sense wiring,
contamination of ame rod, burner ground connection.
Startup - Flame
Sense Calibration
Flash Fast
Not Applicable None
5 min. Retry Delay
Pilot ame 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 ame sense wiring,
ame 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 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
present. If no pilot ame, 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
Pleasefollowthefollowingcorrectiveactionsinorder.
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