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

8.2.1 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 and 3/16th inch (3.2-4.7 mm).
large or too small.
Spark, but no ignition Check that the spark module is sending
power to the gas valve - close the gas
supply, then disconnect the (black) electric
housing from the face of the gas valve.
Gently spread the plastic tabs to open. Look
for 24 VAC voltage during an ignition cycle.
Replace the module if there is no current
detected.
Boiler ignites, but Ensure the pressure vessel is grounded.
shuts off at the end of Check the ignition probe/flame sensor is
the ignition trial. electrically isolated from the vessel, and its
Improperly grounded ceramic insulator is intact. Replace ignition
pressure lead Replace spark module.
vessel/burner or
unserviceable
ignition lead or spark
module.
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8.2.1 Maximum ignition trials error
Fix