Gas-Fired Products 175 User Manual
Form #43343530
July 08
–45–
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
Ye
s
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
Ye
s
Check the manifold gas pressure during st
art up. Is it zero
inches w
.c?
No
Ye
s
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?
Ye
s
No
Af
ter an initial step
opening is the manifold
gas
pressure
correct?
Adjust manifold gas pressure.
No
Ye
s
Is there are sp
ark to
the
side
of
the
burner
cup?
No
Ye
s
Check electrode sp
ark gap. Is it 1/8?
Troubleshooting continued from previous p
age
Ye
s
Replace gas valve.
Remove blockage. Rest
art
troubleshooting.
Adjust manifold pressure. Rest
art
troubleshooting.
No
Ye
s
Remove burner and check the orifice. Is it clean and free from blockage?
Adjust sp
ark gap
carefully
. Rest
art
troubleshooting.
Ye
s
No
Remove sp
ark
electrode and inspect, is the ceramic cracked or loose?
Replace electrode.
Ye
s
No
Turn of
f gas and
check for sp
ark. Is
there a sp
ark to the
throat of the burner cup?
No
Ye
s
Are
the
terminals
tight
on the electrode and the ignition module?
Tighten terminals. Rest
art
troubleshooting.
No
Ye
s
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
Ye
s
Cont
act factory for
assist
ance.
Cont
act factory for
assist
ance.
Remove blockage. Rest
art
troubleshooting.
Cont
act factory for
assist
ance.
No
Ye
s
No
No
Ye
s
Check
vent
and
fresh
air lengths, are they within the maximum permissible?
No
Ye
s
Check air plate st
amped p
art
numbers.
Are they
correct?
No
Ye
s
Check turbulator
, are
the
correct
number
of
lengths inst
alled?
Rep
air or replace
jumper check all wire terminals.
Change number of turbulators.
No
Ye
s
No
Ye
s
Remove burner casting and check the orifice. Is it clean and free from blockage?
No
Ye
s
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.
Troubleshoot Ends
Ye
s
Check
the
gas
supply
pressure with all the heaters on. Does it st
ay above the
minimum required?
No
No
Ye
s
Check the air int
ake
and vent are there any blockages?
No
Ye
s
Is
the
heater
properly
grounded?
No
Ye
s
No
Ye
s
No
Ye
s
No
Ye
s
No
Ye
s
Remove
blower
is
the
wheel free from dirt and dust?
Replace air switch
No
Ye
s
Remove blower does the
wheel
turn
freely?
Replace blower assembly
.
Replace air plate.
Cont
act factory for
assist
ance.
No
Ye
s
Does the amber light st
ay on until the
thermost
at turns of
f?
Does LED on the ignition module flash once?
Ye
s
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
0.7µA
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.