State Water Heaters 310C Installation Manual And Owner's Manual page 42

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.
Green
Remote
LED
031
One Time
101
Five Times
111* Three Times
121*
Three Times
311*
Two Times
321*
Two Times
331*
Two Times
391
Two Times
441
Two Times
510 Six Times
551
Six Times
611*
Four Times
-Fault Analysis of Error Codes-
Malfunction
description
Incorrect DIP switch • Check the DIP switch settings on the PCB (Part #701).
setting
Warning for the "991" • Check the gas type of the water heater.
error code • Check if there is any blockage in the intake air and/or
exhaust.
• Check if there is enough distance between the concentric
terminals.
• Check the altitude/elevation of area of where the water
heater is 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.
Ignition failure • Check if the Hi-limit switch (Part #412) is properly
functioning.
• Check for connection/breakage of wires (Part #413, 708,
709), burn marks on the computer board (Part #701), and/or
soot on the flame rod (Part #108).
• Check if there is a buzzing spark ignition sound coming
from the burner (Part #101) when water heater prepares
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).
Loss of flame • Check if the Hi-limit switch (Part #412) is properly
functioning.
• Check for connection/breakage of wires (Part #413, 708,
709), 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).
110C & 310C:
Outlet thermistor
failure
510C:
Heat exchanger
• Check for connection/breakage of wires and/or debris on
thermistor failure
thermistor (Part #407, 408, 411, 713).
Inlet thermistor failure
Outlet thermistor
failure
(510C model only)
Air-fuel ratio rod failure • Check for connection/breakage of wires (Part #709) and/
or soot on the AFR rod (Part #108).
Flow sensor failure • Check for connection/breakage of wires and/or debris on
(Only Easy-Link & the flow sensor impeller (Part #402).
Multi-Unit System)
Abnormal main gas • Check for connection/breakage of wires (Part #708) and/
solenoid valve or burn marks on the computer board (Part #701).
Abnormal gas • Check for connection/breakage of wires (Part #708) and/
solenoid valve or burn marks on the computer board (Part #701).
Fan motor fault • Check for connection/breakage of wires, dust buildup
in the fan motor (Part #103) and/or burn marks on the
computer board (Part #701).
• Check for frozen/corrosion of connectors (Part #103).
42
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Diagnosis
Page
Owner's Guide
Troubleshooting