Maximum Ignition Trials Error
Issue Diagnosis Fix
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.
No spark when igniting.
Ignition probe/flame
sensor disconnected.
Check that ignition lead is secure
at the control module and at the
probe.
Manual gas shutoff is
closed or gas line not fully
purged.
Check for gas flow. Open manual
gas shutoff and reset boiler.
Gap between ignition
probe rods is too large or
too small.
Adjust ignition probe rod gap
between ⅛ and 3/16th (3.2-4.7
mm).
Boiler ignites, but shuts
off at the end of the
ignition trial. Improperly
grounded pressure
vessel/burner or
unserviceable ignition
lead or spark module.
Ensure the pressure vessel is
grounded. Check the ignition
probe/flame sensor is electrically
isolated from the vessel, and its
ceramic insulator is intact. Replace
ignition lead Replace spark
module.