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TROUBLESHOOTING
If LED on ignition module is flashing,
reset water heater by turning “OFF”
power. Wait 5 seconds and turn
p
ower back “ON”
R
otate thermostat dial to the
h
ighest setting.
Does damper vane Move to the full
o
pen position?
Does LED light on ignition module
illuminate?
Is there pilot flame?
Does Main burner operate?
Does burner continue until thermostat
set point is reached?
Does flue damper rotate to the closed
position?
System okay.
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
Remove damper from
h
eater and
J
ump black & yellow wires
o
f heater harness
(see photo 2)
D
oes LED light on
i
gnition module
i
lluminate?
C
heck for debris limiting
d
amper rotation, if no
d
ebris, replace damper
Y
N
See pilot will not light
(page 8)
See pilot lights, no flame
signal.
(page 9)
See main burner
short cycle
(page 11).
Verify Primary and secondary voltage
at the transformer
(
see photo 1)
I
gnition Module LED Status
O
FF = No power to module
O
N = Module has power
F
lashing = Module is in lock-out
C
AUTION
Use Caution Not to Damage Connectors when making Voltage Measurements or Jumping Terminals
Is there 24 VAC between
terminals “TR” & “TH” of the
ignition module?
(see photo 1A)
Check for debris limiting
damper rotation, if no
debris, replace damper
2
Damper vane show in open position. If damper
is closed, disconnect from harness and
REMOVE damper from water heater.
Harness shown disconnected from damper
with BLACK and YELLOW wires jumped.
S
ee thermostat testing
(
page 6).
DANGER
120 volt exposure. Use Caution
To Avoid Personal Injury.
1
Rear terminals
primary
(120 VAC)
Forward terminals
secondary
(24 VAC)
Ignition module
Page 5
1A
N
Y
Replace ignition module
Check damper harness
connection.
Check for 24 VAC
across terminals
“TR” & “TH”
5