28
Page
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
10-7. Heat exchanger
Part#
*See the table below
Unit
Part#
#401
Function
ďƐŽƌďƐ ŚĞĂƚ ĨƌŽŵ ĐŽŵďƵƐƚŝŽŶ ĂŶĚ ƚƌĂŶƐĨĞƌ ŝƚ ƚŽ ǁĂƚĞƌ ƚŚƌŽƵŐŚ ƚŚĞ ŚĞĂƚ
ĞdžĐŚĂŶŐĞƌƉŝƉĞƐ͘
Failure events
ϭ͘ůŽŐŐĞĚŚĞĂƚĞdžĐŚĂŶŐĞƌĨŝŶƐĂŶĚͬŽƌĐƌĂĐŬƐŽŶƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌǁĂůůƐ͘
Ϯ͘>ĞĂŬŝŶŐĞdžŚĂƵƐƚŐĂƐ͘
ϯ͘/ŵƉƌŽƉĞƌŚĞĂƚƚƌĂŶƐĨĞƌĐĂŶĐĂƵƐĞƚŚĞǁĂƚĞƌŝŶŚĞĂƚĞdžĐŚĂŶŐĞƌƚŽďŽŝů͘
Effects on the water heater
if the heat exchanger fails
ϭ͘tĂƚĞƌůĞĂŬĂŐĞĨƌŽŵƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌ͘
Ϯ͘džŚĂƵƐƚŐĂƐůĞĂŬĂŐĞ;ŝĨƚŚŝƐŽĐĐƵƌƐ͕ĂŶŽǀĞƌŚĞĂƚĐƵƚŽĨĨĨƵƐĞŝƐŝŶƉůĂĐĞƚŽ
ĚĞƚĞĐƚƚŚŝƐĞǀĞŶƚĂŶĚŝŵŵĞĚŝĂƚĞůLJƐƚŽƉƚŚĞǁĂƚĞƌŚĞĂƚĞƌĨƌŽŵŽƉĞƌĂƚŝŶŐͿ
3. Abnormal sounds during combustion .
Error codes when
the heat exchanger fails
N/A
Diagnostic
ϭ͘sŝƐƵĂůŝŶƐƉĞĐƚŝŽŶ͗ƐŽŽƚĚĞƉŽƐŝƚƐ͕ĐƌĂĐŬƐŽŶƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌǁĂůůƐ͕ĂŶĚͬ
ŽƌǁĂƚĞƌůĞĂŬĂŐĞĨƌŽŵƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌ͘
Ϯ͘/ŶƚŚĞĞǀĞŶƚŽĨĂďŶŽƌŵĂůƐŽƵŶĚƐĚƵƌŝŶŐĐŽŵďƵƐƚŝŽŶ͗
͘/ŶƐƉĞĐƚĨŽƌƐŽŽƚďƵŝůĚƵƉŝŶƐŝĚĞƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌ͘
͘/ŶƐƉĞĐƚĨŽƌƐĐĂůĞďƵŝůĚƵƉŝŶƐŝĚĞƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌƉŝƉĞƐ͘^ĐĂůĞ
ďƵŝůĚƵƉŽďƐƚƌƵĐƚƐƉƌŽƉĞƌŚĞĂƚƚƌĂŶƐĨĞƌƚŽƚŚĞǁĂƚĞƌ͕ƚŚĞƌĞďLJ
ŽǀĞƌŚĞĂƚŝŶŐƚŚĞŚĞĂƚĞdžĐŚĂŶŐĞƌĂŶĚĐĂƵƐŝŶŐĚĂŵĂŐĞ͘
Color / Number of wires
N/A
Checkpoint
N/A
Part #
Model
319143-525
EK198
240 Indoor (T-H3J-DV) / 340 (T-H3S-DV)
319143-526
EK199
240 Outdoor (T-H3J-OS) / 340 (T-H3S-OS)
319143-527
EK200
540 Indoor (T-H3-DV)
319143-528
EK206
540 Outdoor (T-H3-OS)
*
EKd͗
Pictures are on the following page