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GAS VALVE LED STATUS/PROBLEM PROBABLE CAUSE SOLUTION
Six-Four Flashes,
three second pause
System in Lockout/
Flame sense out of
sequence
Gas Control (Thermostat's) valve
stuck open
Replace Gas Control (Thermostat)
Seven Flashes, three
second pause
System in Lockout/
Presence of Flamma-
ble Vapors detected
• Gasoline or other ammable
vapor(s) were detected
• Faulty Flammable Vapor Sensor
• Faulty Gas Control (Thermo-
stat)
• Ensure that no ammable vapor(s)
are present
• Reset the Gas Control (Thermostat)
using "ON/OFF" switch located on
the front of the control
• Replace Flammable Vapor Sensor
• Replace Gas Control (Thermostat)
Eight-One Flash,
three second pause
System in Lockout/
Flammable Vapor
Sensor fault detected
• Flammable vapor sensor values
out of range
• Improper Flammable Va-
por Sensor wiring and/or
connection(s)
• Faulty Flammable Vapor Sensor
• Inspect the Flammable Vapor Sen-
sor wiring and connection(s)
• Replace Flammable Vapor Sensor
• Replace Gas Control (Thermostat)
Eight-Two Flashes,
three second pause
System in Lockout/
Energy cutoff device
fault detected
• Thermal well fault in Gas Con-
trol (Thermostat)
• Inspect the wiring connection(s) to
the thermal well
• Replace the thermal well
Eight-Three Flashes,
three second pause
System in Lockout/
Fault in the electronics
circuit detected
• Thermal well fault in Gas Con-
trol (Thermostat)
• Faulty Gas Control (Thermo-
stat)
• Replace thermal well
• Replace Gas Control (Thermostat)
Eight-Four Flashes,
three second pause
System in Lockout/
Fault with the Gas
Control (Thermostat)
• Gas Control (Thermostat) needs
to be reset
• Gas Control (Thermostat) has
been damaged
• Cycle the power to the Gas Control
(Thermostat)
• Replace the Gas Control (Thermo-
stat)
Gas Valve LED Codes cont.....
25
CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, remote control, burners, vent connectors or other
safety devices. Refer repairs to qualified service personnel.
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