John Wood Takagi - 110-310-510 User Manual
Page 31
31
Fault Analysis Of Error Codes
If the error code is displayed on the computer board of the water heater or remote controller, please check the following.
After checking, consult with the manufacturer.
110 & 310
510
Malfunction description
Diagnosis
Red LED
TK-RE02
TM-RE30
One Time
03
031
Incorrect DIPswitch setting
Check the DIPswitch settings on the
PCB. (Part #701)
•
Five Times
10
101
Warning for the “991” error
code
Check the gas type of the water heat-
er.
Check if there is any blockage in the
intake air and/or exhaust.
If the water heater is installed as
a direct-vent system, check whether
there is enough distance between the
intake air terminal and the exhaust
terminal.
Check the altitude/elevation of area of
where the water heater installed.
Check if there is grease and/or dirt
in the burner (Part #101) and the fan
motor (Part #103), especially if the
water heater has been installed in a
contaminated area.
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•
•
•
•
Three Times
11
111
Ignition failure
Check if the Hi-limit switch (Part #412)
is properly functioning.
Check for connection/breakage of
wires (Part #413, 708, 709, 710, 712),
burn marks on the computer board
(Part #701), and/or soot on the flame
rod (Part #108).
Check if there is a buzzing spark igni-
tion sound coming from the burner
(Part #101) when water heater pre-
pares for combustion.
Listen for the double “clunk” sound
coming from gas valve assembly (Part
#102) when water heater goes into
combustion.
Check if there is leaking from heat
exchanger. (Part #401)
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•
•
•
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Three Times
12
121
Loss of flame
Check if the Hi-limit switch (Part #412)
is properly functioning.
Check for connection/breakage of
wires (Part #413, 708, 709, 710, 712),
burn marks on the computer board
(Part #701), and/or soot on the flame
rod (Part #108).
Check if there is leaking from heat
exchanger. (Part #401)
•
•
•
Two Times
31
32
311
321
Output thermistor failure
Check for connection/breakage of
wires and/or debris on thermistor. (Part
#407, 408, 411, 716)
•
Inlet thermistor failure
N/A
N/A
331
Mixing thermistor failure
Two Times
39
391
Air–fuel Ratio Rod failure
Check for connection/breakage of
wires (Part #709) and/or soot on the
AFR rod. (Part #108)
•