Form 43343530
Aug 2012
-47-
Purge the gas supply
lines.
Is the LED on the
ignition module
steady on?
Replace ignition
module.
Remove and re-insert
electrode. If it still
sp
arks to the side.
Replace electrode.
No
Y
es
Check nameplate are
the gas type, orifice
and airplates correct
for the st
ated burner
specification?
Carefully bend the
terminal away from
the burner casting.
Rest
art
troubleshooting.
No
Y
es
Check the manifold
gas pressure during
st
art up. Is it zero
inches w
.c?
No
Y
es
Has all the air been
purged from the gas
supply lines?
Check the inlet
pressure to the gas
valve. Is it between
the minimum and
maximum for the gas
pressure?
Y
es
No
Af
ter an initial step
opening is the
manifold gas pressure
correct?
Adjust manifold gas
pressure.
No
Y
es
Is there are sp
ark to
the side of the burner
cup?
No
Y
es
Check electrode
sp
ark gap. Is it 1/8?
T
roubleshooting
continued from
previous p
age
Y
es
Replace gas valve.
Remove blockage.
Rest
art
troubleshooting.
Adjust manifold
pressure. Rest
art
troubleshooting.
No
Y
es
Remove burner and
check the orifice. Is it
clean and free from
blockage?
Adjust sp
ark gap
carefully
. Rest
art
troubleshooting.
Y
es
No
Remove sp
ark
electrode and
inspect, is the
ceramic cracked or
loose?
Replace electrode.
Y
es
No
T
urn of
f gas and
check for sp
ark. Is
there a sp
ark to the
throat of the burner
cup?
No
Y
es
Are the terminals tight
on the electrode and
the ignition module?
T
ighten terminals.
Rest
art
troubleshooting.
No
Y
es
Check the terminal at
the electrode does it
arc to the burner
casting?
Replace flame sense
wire ignition cable. If
problems persist
cont
act factory for
assist
ance.
No
No
Y
es
Cont
act factory for
assist
ance.
Cont
act factory for
assist
ance.
Remove blockage.
Rest
art
troubleshooting.
Cont
act factory for
assist
ance.
No
Y
es
No
No
Y
es
Check vent and fresh
air lengths, are they
within the maximum
permissible?
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.
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
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 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
Does the amber light
st
ay on until the
thermost
at turns of
f?
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.
