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Form #43343330
–44– May 08
Remove blockage.
Restart
troubleshooting.
Contact factory for
assistance.
No
Yes
No
No
Yes
Does the amber light
stay on past 10
seconds?
No
Yes
Check the micro
Amps at the FC-FC+
terminals of the
module is it greater
than 0.7µA with flame.
Turn 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
Yes
Check vent and fresh
air lengths, are they
within the maximum
permissible?
Contact factory for
assistance.
Replace flame sense
wire.
No
Yes
Check air plate
stamped part
numbers. Are they
correct?
No
Yes
Check turbulator, are
the correct number of
lengths installed?
Repair or replace
jumper check all wire
terminals.
Change number of
turbulators.
Adjust terminal
connection. Restart
troubleshooting.
No
Yes
No
Yes
Remove burner
casting and check
the orifice. Is it clean
and free from
blockage?
No
Yes
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. Restart
troubleshooting.
Troubleshoot Ends
No
Yes
Is the knob on the gas
valve turned to the
ON position?
No
Yes
Through the
inspection window is
there a flame visible
during start up?
No
Yes
Is the heater properly
grounded?
Correct grounding
problem.
No
Yes
Check the terminal on
the flame sense
electrode, is it tight?
No
Yes
Remove and inspect
flame sense
electrode. Is it clean
and the ceramic
intact?
Repair or replace
flame sense
electrode.
Yes
Check the gas supply
pressure with all the
heaters on. Does it
stay above the
minimum required?
No
No
Yes
Check the air intake
and vent are there
any blockages?
No
Yes
Is the heater properly
grounded?
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Remove blower is the
wheel free from dirt
and dust?
Replace air switch
No
Yes
Remove blower does
the wheel turn freely?
Replace blower
assembly.
Replace air plate.
Contact factory for
assistance.
No
Yes
Does the amber light
stay on until the
thermostat turns off?
See next page for
troubleshooting
sequence.
No
Yes
Replace ignition
module.
No
Yes
Does LED on the
ignition module flash
once?
Yes
Does LED on the
ignition module flash
three times?
After an initial step
opening is the
manifold gas
pressure correct?
Correct grounding
problem.
Remove blockage.
Restart
troubleshooting.
Clean blower wheel.
Restart
troubleshooting.
Contact factory for
assistance.
Check the micro
Amps 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. Restart
troubleshooting.
Remove and inspect
flame sense
electrode. Is it clean
and the ceramic
intact?
Repair or replace
flame sense
electrode.
Contact factory for
assistance.