Maximum Ignition Trials Error - IBC EX Series Installation & Operating Manual

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present the text will scroll slowly through all current alarm conditions. Besides the errors listed
below, see also Miscellaneous touchscreen controller errors on page

8.3.2 Maximum ignition trials error

Issue
Error – Ignition Failure after
3 tries boiler has failed to
ignite on 3 successive
attempts. Boiler is in lockout
for 1 hour, then repeats 3-try
sequence. Consult service
technician if error recurs.
Maximum Ignition Trials Error
Diagnosis
No spark when Check that ignition lead is secure at the
igniting. Ignition control module and at the probe.
probe/flame sensor
disconnected.
Manual gas shutoff is Check for gas flow. Open manual gas
closed or gas line not shutoff and reset boiler.
fully purged.
Gap between ignition Adjust ignition probe rod gap between ⅛
probe rods is too large and 3/16th (3.2-4.7 mm).
or too small.
Spark, but no ignition. Check spark module is sending power
to gas valve – close gas supply, then
disconnect (black) electric housing from
face of gas valve, gently spread plastic
tabs to open, and look for 24vac voltage
during an ignition cycle. Replace module
if no current detected
Boiler ignites, but Ensure the pressure vessel is grounded.
shuts off at the end of Check the ignition probe/flame sensor
the ignition trial. is electrically isolated from the vessel,
Improperly grounded and its ceramic insulator is intact.
pressure Replace ignition lead Replace spark
vessel/burner or module.
unserviceable ignition
lead or spark module.
112
Section: Troubleshooting
114.
Fix