Low Igniter Current - State Water Heaters 120 Series Service Handbook

fault messages
displayed message/condition/indicates

low Igniter Current

The Control System has detected less than 0.5 AC amps
through the Igniter during the Igniter Warm up operating
state. See the Sequence of operation Flow Chart on
page 55.
Low Igniter Current
Fault occurred 2 mins ago
Igniter current is low.
Call a service professional:
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Important Service Reminder:
When performing any troubleshooting steps outlined in
this 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.
64
BACK ADVANCED
Servicing should only be performed by a Qualified Service Agent
possible causes - checK/repair
• Check all wiring between CCB's J5 Socket (page 41)
pins 1 & 2 and the Igniter. Repair/replace anything
worn or damaged as necessary.
• Check the Igniter wiring connections behind the CCB
enclosure. See Figure 10 on page 13 and Figure 21 on
page 21. Repair/replace anything worn or damaged as
necessary.
• Perform close visual inspection of the pins inside
the CCB J5 plug and socket - ensure plugs and
sockets are mating properly and providing good
contact Repair/replace anything worn or damaged as
necessary.
• With power turned on and a call for heat active -
ensure there is 120 VAC between pins 1 & 2 of
the CCB's J5 Socket during the Igniter Warm up
operating state. - the animated lighting bolt icon will
appear on the desktop Screen during the Igniter
Warm up operating state. See desktop Screen on
page 46 and operating States on page 48.
• Turn off power to the water heater - disconnect the
Igniter wires from the Burner Adapter wiring harness
behind the CCB enclosure. Check for continuity
between the two Igniter wires, two female spade
connectors. If the Igniter is an open circuit or 200
ohms or more - replace the Igniter.
• With power turned on and a call for heat active -
check amp draw through the Igniter with an AC amp
meter during the Igniter Warm up operating state.
See the Igniter Current Test on page 20. Replace
Igniter if amp draw is less than 0.55 AC amps.
• Call the toll free support phone number on the back
cover of this manual for further assistance if the
problem has not been corrected after performing the
procedures outlined here.