A.O. Smith 240 T-H3J, Service Manual

Page: 50 / 104

50
Page
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
Error Code Malfunction description Cancellation method
111
ƌƌŽƌĐŽĚĞŝƐƐŚŽǁŶ
ĂĨƚĞƌƚŚƌĞĞĨĂŝůĞĚ
attempts at ignition
/ŐŶŝƚŝŽŶĨĂŝůƵƌĞ dƵƌŶŽĨĨƚŚĞƉŽǁĞƌŽƌǁĂƚĞƌƐƵƉƉůLJ
Diagnosis Check point
1 Check gas supply and inlet gas pressure (Refer to section 1)
2 Check the igniter (Refer to section 10-19)
sŝƐƵĂůŝŶƐƉĞĐƚŝŽŶ͗ĐŽŶŶĞĐƚŝŽŶͬďƌĞĂŬĂŐĞŽĨǁŝƌĞƐĂŶĚͬŽƌ
observed weak spark.
ഩ΀ϭ΁ƌĂĐŬƐͬƐŽŽƚŽŶŝŐŶŝƚĞƌƌŽĚ
ഩ΀Ϯ΁/ŵƉƌŽƉĞƌŐĂƉďĞƚǁĞĞŶďƵƌŶĞƌΘŝŐŶŝƚĞƌƌŽĚ
Normal gap: 0.16" (4mm)
ഩ΀ϯ΁WĨĂƵůƚ
Normal: 108 to 132 VAC at #7 (purple-purple) (during ignition)
B
ϯWĨĂƵůƚ
ഩ΀ϭ΁EŽǀŽůƚĂŐĞƚŽŵĂŝŶŐĂƐƐŽůĞŶŽŝĚǀĂůǀĞ;DsͿ
Normal: 93 to 120 VDC between COM (blue) & #3 (light blue)
(during operation)
ഩ΀Ϯ΁EŽǀŽůƚĂŐĞƚŽŐĂƐƐŽůĞŶŽŝĚǀĂůǀĞ;^s
2
)
Normal: 93 to 120 VDC between COM (blue) & #53 (orange)
(during operation)
ഩ΀ϯ΁EŽǀŽůƚĂŐĞƚŽŐĂƐƉƌŽƉŽƌƚŝŽŶĂůǀĂůǀĞ;s'
0
)
Normal: 1.0 to 15 VDC between white & red (during operation)
C
H1
ϰ'ĂƐƐŽůĞŶŽŝĚǀĂůǀĞĨĂƵůƚ
ഩ΀ϭ΁DĂŝŶŐĂƐƐŽůĞŶŽŝĚǀĂůǀĞ;DsͿĨĂƵůƚ
EŽƌŵĂů͗ϭ͘ϯϱƚŽϭ͘ϲϱŬɏďĞƚǁĞĞŶKD;ďůƵĞͿΘηϯ;ůŝŐŚƚďůƵĞͿ
ഩ΀Ϯ΁'ĂƐƐŽůĞŶŽŝĚǀĂůǀĞ;^s
2
ͿĨĂƵůƚ
EŽƌŵĂů͗ϭ͘ϯϱƚŽϭ͘ϲϱŬɏďĞƚǁĞĞŶKD;ďůƵĞͿΘηϱϯ;ŽƌĂŶŐĞͿ
ഩ΀ϯ΁'ĂƐƉƌŽƉŽƌƚŝŽŶĂůǀĂůǀĞ;s'
0
ͿĨĂƵůƚ
Normal: 1.0 to 15 VDC between white & red (during operation)
C
H1
ϱŝƐĐŽŶŶĞĐƚĞĚͬĚĂŵĂŐĞĚK͘,͘͘&͘
(Refer to section 10-16)
ഩsŝƐƵĂůŝŶƐƉĞĐƚŝŽŶ͗ĐŽŶŶĞĐƚŝŽŶͬďƌĞĂŬĂŐĞŽĨǁŝƌĞƐ͘
ഩEŽƌŵĂů͗ϭ͘ϬɏŽƌůĞƐƐďĞƚǁĞĞŶďůƵĞΘďůƵĞ
C2
ϲŝƐĐŽŶŶĞĐƚĞĚͬĚĂŵĂŐĞĚŚŝͲůŝŵŝƚƐǁŝƚĐŚ͘
(Refer to section 10-14)
ഩsŝƐƵĂůŝŶƐƉĞĐƚŝŽŶ͗ĐŽŶŶĞĐƚŝŽŶͬďƌĞĂŬĂŐĞŽĨǁŝƌĞƐ͘
ഩEŽƌŵĂů͗ϭ͘ϬɏŽƌůĞƐƐďĞƚǁĞĞŶďůƵĞΘďůƵĞ
C1
ϳ/ŶƐƉĞĐƚĨůĂŵĞƌŽĚ
ഩ΀ϭ΁ŚĞĐŬĨŽƌĂŶLJƐŽŽƚŽŶƚŚĞƌŽĚ͘
ഩ΀Ϯ΁ŚĞĐŬƚŚĞĐŽŶŶĞĐƚŝŽŶŽĨŐƌŽƵŶĚǁŝƌĞ͖ŵĂŬĞƐƵƌĞƚŚĞƌĞŝƐĨŝƌŵ
ĐŽŶƚĂĐƚƚŽƚŚĞŐƌŽƵŶĚŽĨƚŚĞǁĂƚĞƌŚĞĂƚĞƌ͘
;ŝŶƚŚŝƐĐĂƐĞ͕ƚŚĞǁŝƌĞŝƐĐŽŶƚĂĐƚĞĚƚŽƚŚĞŵĂŶŝĨŽůĚƐƵƌĨĂĐĞ͘Ϳ
ഩ΀ϯ΁WĨĂƵůƚ
ƵƌŝŶŐŽƉĞƌĂƚŝŽŶ͗ŵŽƌĞƚŚĂŶϭʅƚŚƌŽƵŐŚƚŚĞĨůĂŵĞƌŽĚ
wire (orange)
ഩ΀ϰ΁&ůĂŵĞƌŽĚĨĂƵůƚ
ƵƌŝŶŐŽƉĞƌĂƚŝŽŶ͗ŵŽƌĞƚŚĂŶϭʅƚŚƌŽƵŐŚƚŚĞĨůĂŵĞƌŽĚ
wire (orange)
/
ϴŚĞĐŬŝĨŚŝͲůŝŵŝƚƐǁŝƚĐŚŝƐƉƌŽƉĞƌůLJĨƵŶĐƚŝŽŶŝŶŐ͘