Igniter - A.O. Smith 510 Outdoor Service Manual

10-17. Igniter

Unit Part #
Function
Failure events
Effects on the water
heater if the igniter fails
Error codes when Igniter
fails
Diagnostic
Color/Number of wires
High-voltage igniter cable
14 kVDC
#711 AOS Part #
-To ignite the gas/air mixtures when the water heater is ready to burn gas on
its burner surface.
-The output voltage of the igniter is more than 14 kVDC.
1. Unable to ignite during the ignition process.
2. Makes attempts to ignite at all times.
1. The water heater cannot ignite during the ignition process and the "111"
or "121" error codes will display.
2. No effects on the water heater, however, the durability of the igniter
wears down.
111
1. Visual inspection: connection/breakage of wires and/or an observed weak
spark.
2. Check voltages: proper range of values shown below.
Purple(7)-Purple(7)
Igniter
90 to 110 VAC
510 Indoor / 510 Outdoor Service Manual
319143-052
90 to 110 VAC
Purple wire
33
CONFIDENTIAL
Ver. 1.00
Checkpoint B
121
The high-voltage igniter
cable and the purple
wires do not come with
319143-052.