32
Page
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
10-9. Flow adjustment valve
Part#
ͻഩϯϭϵϭϰϯͲϰϲϯ;<ϭϮϵͿ
Unit Part#
#402
Function
ŽŶƚƌŽůƐǁĂƚĞƌĨůŽǁƚŽƉƌŽƉĞƌůLJĐŽŶƚƌŽůƚŚĞŽƵƚƉƵƚŚŽƚǁĂƚĞƌƚĞŵƉĞƌĂƚƵƌĞ͘
Failure events
ϭ͘tĂƚĞƌůĞĂŬĂŐĞĨƌŽŵǀĂůǀĞ͘
Ϯ͘dŚĞǀĂůǀĞĐĂŶŶŽƚŵŽĚƵůĂƚĞŽƌŵĂŬĞŽƉĞŶͬĐůŽƐĞƉŽƐŝƚŝŽŶƐ͘
Effects on the water heater
if flow adjustment valve
fails
ϭ͘tĂƚĞƌůĞĂŬĂŐĞĨƌŽŵĨĂŝůĞĚǀĂůǀĞĐĂŶĚĂŵĂŐĞŽƚŚĞƌǁĂƚĞƌŚĞĂƚĞƌ
components.
Ϯ͘dĞŵƉĞƌĂƚƵƌĞĨůƵĐƚƵĂƚŝŽŶƐŝŶƚŚĞŚŽƚǁĂƚĞƌŽƵƚƉƵƚ͘
ϯ͘tŝƚŚŝŶĂŶĂƐLJͲ>ŝŶŬƐLJƐƚĞŵ͕ƚŚĞ͞ϲϱϭ͟ĞƌƌŽƌĐŽĚĞĐĂŶŽĐĐƵƌ͘
Error codes when flow
adjustment valve fails
651 (only within Easy-Link systems)
Diagnostic
ϭ͘sŝƐƵĂůŝŶƐƉĞĐƚŝŽŶ͗ĐŽŶŶĞĐƚŝŽŶͬďƌĞĂŬĂŐĞŽĨǁŝƌĞƐ͕ŵŽƚŽƌĚƌŝǀĞůŽĐŬĞĚĚƵĞ
ƚŽƐĐĂůĞďƵŝůĚƵƉ͕ĂŶĚͬŽƌǁĂƚĞƌůĞĂŬĂŐĞ͘
Ϯ͘ŚĞĐŬǀŽůƚĂŐĞƐĂŶĚƌĞƐŝƐƚĂŶĐĞ͖ƉƌŽƉĞƌƌĂŶŐĞŽĨǀĂůƵĞƐƐŚŽǁŶďĞůŽǁ͘
Color / Number of wires
Black - Red
ϳ͘ϬƚŽϭϲsĂŶĚϬ͘ϬϵƚŽϬ͘ϮŬɏ
Checkpoint
J
The flow adjustment valve is assembled with the flow sensor.
Flow
adjustment
valve
Flow sensor
Flow
adjustment
valve
Flow sensor
IN
OUT
OUT
IN
Flow adjustment valve
(Red)
3
(Black)
M
1
1
3
2
Open
Close
4
+
-
+
>PPE
-GF<
3-3/8" (84.4 mm)
-
1-7/8" (47 mm)
3
2
1
4
2-5/8" (67.5 mm)
Flow
adjustment
valve