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VF BOILER SERVICE MANUAL
AOS WPC - Tech Training 60 of 72 Ashland City, TN © 2007
Servicing should only be performed by a Qualified Service Agent
ERROR MESSAGES (CONT)
DISPLAYED MESSAGE
CONDITION/INDICATES
CHECK/REPAIR
“Igniter Stg1”
MCB is not sensing minimum igniter current of 2.7
AC amps during the igniter warm up period.
Important Service Reminder:
When performing any troubleshooting steps outlined
in this service manual always consider the wiring
and connectors between components. Perform a
close visual inspection of all wiring and connectors
to a given component before replacement.
Ensure wires were stripped before being crimped in
a wire connector, ensure wires are crimped tightly in
their connectors, ensure connection pins in sockets
and plugs are not damaged or worn, ensure plugs
and sockets are mating properly and providing good
contact.
Failure to perform this critical step or failing to
perform this step thoroughly often results in
needless down time, unnecessary parts
replacement, and customer dissatisfaction.
• Check all wiring and connections between pins
1 & 2 of the J18 socket on the MCB (see page
29) and the igniter. Repair/replace any worn or
damaged wiring or connectors.
Closely inspect the pins in the J18 socket/plug
for wear or damage. Ensure the plug and socket
are properly connected and making good con-
tact.
• Ensure there is 120 VAC between pins 1 & 2 of
the J18 socket on the MCB during the igniter
warm up period (blower speed reduces after pre
purge cycle is completed).
If 120 VAC is not present at the J18 socket dur-
ing the igniter warm up period - call the A. O.
Smith technical information center for further
assistance at 800 527-1953.
• Check igniter amps during igniter warm up
period (blower speed reduces after pre purge
cycle is completed). If amp draw is less than 3.0
amps replace the igniter.