Instructions / Assembly

37
Gas Valve LED Codes
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, combination gas control (thermostat), burners, vent system or
other safety devices. Refer repairs to qualified service personnel.
LCD CODE
(Models equipped with
optional display)
LED STATUS PROBLEM SOLUTION
None
Short ash once every
four seconds
None No solution required
None
“Heartbeat”, alternates
bright/dim
None No solution required
12
One ash every three
seconds
Low ame signal
1. Gas supply pressure is too low. Increase the inlet gas supply pressure.
2. Low voltage to the water heater. Increase supply voltage to rated volt-
age.
3. Replace the pilot assembly.
44
Two ashes every three
seconds
Pressure switch failed
closed.
1. Verify that the wiring to the blower pressure switch it correct.
2. Verify that the wiring to the blower pressure switch is connected prop-
erly.
3. Replace the blower assembly.
46
Three ashes every three
seconds
Pressure and/or blower
thermal switch failed open.
1. Verify that the wiring to the blower pressure switch and thermal switch
is correct.
2. Verify that wiring to the blower pressure switch and thermal switch is
connected properly.
3. Check the vent sytem for blockage or obstructions.
4. Replace the blower assembly.
31
Four ashes every three
seconds
TCO activated.
1. Make sure the tank is full of water.
2. Reset the TCO and check for proper combination gas control (thermo-
stat) cycling.
14
Five ashes every three
seconds
Flame out of sequence 1. Replace the combination gas control (thermostat).
11
Six ashes of one, every
three seconds
System in lockout. Failed
trial for ignitions.
1. Gas supply is off or too low to operate. Turn on the gas supply and/or
increase the inlet gas supply pressure.
2. Replace the pilot assembly.
3. Replace the combination gas control (thermostat).
45
Six ashes of two, every
three seconds
System in lockout. Blower
pressure switch and/or
thermal switch open.
1. Verify that the wiring to the blower pressure switch and thermal switch
is correct.
2. Verify that wiring to the blower pressure switch and thermal switch is
connected properly.
3. Check the vent sytem for blockage or obstructions.
4. Replace the blower assembly.
13
Six ashes of three, every
three seconds
System in lockout. Flame
lost.
1. Gas supply pressure is too low. Increase the inlet gas supply pressure.
2. Check the combustion air-inlet openings around the water heater jacket
for blockage or obstructions.
3. Replace the pilot assembly.
14
Six ashes of four, every
three seconds
System in lockout. Flame
sense out of sequence.
1. Replace the combination gas control (thermostat).
10
Six ashes of ve, every
three seconds
System in lockout. Failed
Ignition attempts.
1. Gas supply is off or too low to operate. Turn on the gas supply and/or
increase the inlet gas supply pressure.
2. Replace the pilot assembly.
3. Replace the combination gas control (thermostat).
47
Seven ashes every three
seconds
System in lockout. Flam-
mable vapor sensor.
1. Flammable vapor sensor detected the prescence of ammable vapors.
Verify that no gasoline or ammable vapors are present.
2. Reset the combination gas control (thermostat).
3. Replace the ammable vapor sensor.
49
Eight ashes of one, every
three seconds
Flammable vapor sensor,
fault detected.
1. Replace the ammable vapor sensor.
2. Replace the combination gas control (thermostat).
89
Eight ashes of two, ev-
ery three seconds
Temperature sensor fault
detected.
1. Check the wiring connections of the connection of the combination gas
controls (thermostat), thermal well.
2. Replace the thermal well of the combination gas control (thermostat).
15
Eight ashes of three,
every three seconds
Electronics fault detected.
1. Replace combination gas control (thermostat).
2. Replace the thermal well of the combination gas control (thermostat).
93
Eight ashes of four,
every three seconds
Combination gas control
(thermostat) fault detected.
1. Cycle power to the combination gas control (thermostat).
2. Replace the combination gas control (thermostat).