Form 43343320
Aug 2012
-45-
Remove blockage.
Rest
art
troubleshooting.
Cont
act factory for
assist
ance.
No
Y
es
No
No
Y
es
Does the amber light
st
ay on p
ast 10
seconds?
No
Y
es
Check the micro
Amp
s at the FC-FC+
terminals of the
module is it greater
than 0.7
µA
with flame.
T
urn on the gas
valve?
Does LED on the
ignition module flash
three times?
Replace ignition
module.
Check flame sense
wire does it have
continuity?
No
Y
es
Check vent and fresh
air lengths, are they
within the maximum
permissible?
Cont
act factory for
assist
ance.
Replace flame sense
wire.
No
Y
es
Check air plate
st
amped p
art
numbers.
Are they
correct?
No
Y
es
Check turbulator
, are
the correct number of
lengths inst
alled?
Rep
air or replace
jumper check all wire
terminals.
Change number of
turbulators.
Adjust terminal
connection. Rest
art
troubleshooting.
No
Y
es
No
Y
es
Remove burner
casting and check
the orifice. Is it clean
and free from
blockage?
No
Y
es
Check the pressure
across the air switch
during hot running is
it higher than the
minimum required?
Check gas pipe
sizing, regulators and
system supply gas
pressures.
Adjust manifold
pressure. Rest
art
troubleshooting.
T
roubleshoot Ends
No
Y
es
Is the knob on the gas
valve turned to the
ON position?
No
Y
es
Through the
inspection window is
there a flame visible
during st
art up?
No
Y
es
Is the heater properly
grounded?
Correct grounding
problem.
No
Y
es
Check the terminal on
the flame sense
electrode, is it tight?
No
Y
es
Remove and inspect
flame sense
electrode. Is it clean
and the ceramic
int
act?
Rep
air or replace
flame sense
electrode.
Y
es
Check the gas supply
pressure with all the
heaters on. Does it
st
ay above the
minimum required?
No
No
Y
es
Check the air int
ake
and vent are there
any blockages?
No
Y
es
Is a cold air stopper
inst
alled in the fresh
air int
ake?
No
Y
es
Is the heater properly
grounded?
No
Y
es
No
Y
es
No
Y
es
No
Y
es
No
Y
es
Remove blower is the
wheel free from dirt
and dust?
Replace air switch
No
Y
es
Remove blower does
the wheel turn freely?
Replace blower
assembly
.
Replace air plate.
Cont
act factory for
assist
ance.
No
Y
es
Is the cold air stopper
inst
alled with the
hinge vertical?
Move cold air stopper
with the hinge in the
vertical position.
Rest
art
troubleshooting.
No
Y
es
Does the amber light
st
ay on until the
thermost
at turns of
f?
See next p
age for
troubleshooting
sequence.
No
Y
es
Replace ignition
module.
No
Y
es
Does LED on the
ignition module flash
once?
Y
es
Does LED on the
ignition module flash
three times?
Af
ter an initial step
opening is the
manifold gas
pressure correct?
Correct grounding
problem.
Remove blockage.
Rest
art
troubleshooting.
Clean blower wheel.
Rest
art
troubleshooting.
Cont
act factory for
assist
ance.
Check the micro
Amp
s at the FC-FC+
terminals of the
module is it greater
than 0.7
µA
with flame.
Check the terminal on
the flame sense
electrode, is it tight?
Check flame sense
wire does it have
continuity?
Replace flame sense
wire.
Adjust terminal
connection. Rest
art
troubleshooting.
Remove and inspect
flame sense
electrode. Is it clean
and the ceramic
int
act?
Rep
air or replace
flame sense
electrode.
Cont
act factory for
assist
ance.