A.O. Smith 240 T-H3J Service Manual page 50

Error Code
111
1 Check gas supply and inlet gas pressure (Refer to section 1)
2 Check the igniter (Refer to section 10-19)
attempts at ignition
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Malfunction description
observed weak spark.
Normal gap: 0.16" (4mm)
Normal: 108 to 132 VAC at #7 (purple-purple) (during ignition)
Normal: 93 to 120 VDC between COM (blue) & #3 (light blue)
(during operation)
Normal: 93 to 120 VDC between COM (blue) & #53 (orange)
(during operation)
Normal: 1.0 to 15 VDC between white & red (during operation)
Normal: 1.0 to 15 VDC between white & red (during operation)
wire (orange)
wire (orange)
50
Cancellation method
Diagnosis
)
2
)
0
2
0
(Refer to section 10-16)
(Refer to section 10-14)
Page
CONFIDENTIAL
Ver. 1.00
Check point
B
C
H1
C
H1
C2
C1