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24
Gas Valve LED Codes
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.
GAS VALVE LED STATUS/PROBLEM PROBABLE CAUSE SOLUTION
Short ash once ev-
ery four seconds
Normal Operating
Condition/ No Fault
Condition
Water Temperature setpoint has been
achieved
None required
“Heartbeat”, alter-
nates bright/dim
Calling For Heat/No
Fault Conditions
Water temperature is below setpoint
and burner is on
None required
One Flash, three
second pause
Control still operating/
Low ame signal
• Pilot tube restricted or damaged
• Carbon build-up on pilot's electrode
• Pilot igniter wire damaged
• Gas supply problems
• Replace Pilot assembly
• Correct gas supply
Two Flashes, three
second pause.
Sytem in Lockout/Flue
Damper Switch closed
• Flue Damper improperly sealed
• Flue Damper switch stuck closed
• Faulty Flue Damper motor
• Obstruction or debris in damper
opening
• Inspect Flue Damper wiring and
connections
• Replace Flue Damper Assembly
• Contact a qualied service techni-
cian. See "IF YOU NEED SER-
VICE" on page 28
Three Flashes, three
second pause
System in Lockout/Flue
Damper Switch open
• Flue Damper improperly installed
• Flue Damper switch stuck open
• Faulty Flue Damper switch
• Incorrect wiring and/or connections
• Faulty Flue Damper motor
• Obstruction or debris in damper
opening
• Inspect wiring and connections
• Replace Flue Damper Assembly
• Contact a qualied service techni-
cian. See "IF YOU NEED SER-
VICE" on page 28
Four Flashes, three
second pause
System in Lockout/
Thermal Cutoff Device
tripped
• Thermal well fault in Gas Control
(Thermostat)
• Gas Control (Thermostat) faulty
• Tank not lled with water
• Reset Gas Control (Thermostat) and
check for proper cycling of control.
• Replace Gas Control (Thermostat)
• Ensure tank is completely lled
with water
Five Flashes, three
second pause
System in Lockout/No
Flame Sense
Pilot and/or Main Burner valve has
failed to open
Replace the Gas Control (Thermostat)
Six-One Flashes,
three second pause
System in Lockout/
Unit failed to light
• Pilot ame unstable
• Pilot tube restricted or damaged
• Carbon build-up on pilot's electrode
• Pilot igniter wire damged
• Gas supply problem(s)
• Replace Pilot assembly
• Correct gas supply
Six-Two Flashes,
three second pause
System in Lockout/
Flue Damper Switch
opened
• Improper Flue Damper installation
• Faulty Flue Damper switch
• Incorrect wiring and/or connections
• Inspect Flue Damper wiring and
connections
• Replace Flue Damper Assembly
• Contact a qualied service techni-
cian. See "IF YOU NEED SER-
VICE" on page 28
Six-Three Flashes,
three second pause
System in Lockout/
Flame Lost
• Combusstion air supply restricted
or blocked
• Pilot tube restricted or damaged
• Carbon build-up on pilot's electrode
• Pilot igniter wire damaged
• Gas supply problem(s)
• Ensure combustion air supply is not
blocked or restricted
• Replace Pilot assembly
• Correct gas supply
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