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LED Status Control Status Probable Cause Service Procedure
Six flashes,
t
wo flashes,
three second
p
ause (Soft
Lockout)
Damper test circuit
not working
properly during
burner operation,
system auto resets
after (5) minutes
1. Damper not in proper position
or malfunctioning - damper
m
oved from full open position
d
uring run cycle
2. Obstructed venting
3. Faulty damper
4. Damper jostled during run
c
y
cle
1. See Burner Inspection
on page 15
2-4. See Pilot Inspection,
T
esting and Replacement
on pate 17
S
ix flashes,
t
hree
flashes,
three second
pause (Soft
Lockout)
Pilot flame
extinguished,
system auto resets
after (5) minutes
1. Unstable pilot
2. Pilot tube block or restricted
3. Oxidation build-up on pilot
electrode
4
. Wire damage to pilot
assembly or bad connection at
gas control
5. Insufficient combustion air
6. Insufficient
g
as
p
ressure
1. See Burner Inspection
on page 15
2-4. See Pilot Inspection,
Testing and Replacement
on page 17
5. Refer to Installation &
Operation Manual
Six flashes,
four flashes,
three second
pause
Undesired false
pilot flame sensed,
system auto resets
Pilot valve stuck in open position Replace gas control
Seven
flashes,
three second
pause
Flammable vapor
sensor or
resettable thermal
switch fault
detected, see
warning label
1. Flammable vapor present
2. Flammable vapor sensor
exposed to excessive moisture
3. Flammable vapor sensor
exposed to extreme ambient
temperature
4. Resettable thermal switch
o
p
en
See Flammable Vapor
Sensor Testing on page 27
Eight
flashes, one
flash, three
second
pause
Flammable vapor
sensor out of
specification,
possible short
1. Flammable vapor sensor out
of specification; verify Flammable
Vapor Sensor (FVS) resistance is
not below 25 k.
2. Possible short in flammable
vapor sensor or resettable
thermal switch wirin
g
See Flammable Vapor
Sensor Testing on page 27
Eight
flashes,
three
flashes,
three second
pause
Thermal well sensor
damaged or
unplugged or gas
control electronics
fault detected
1. Damage to thermal well wires
2. Thermal well sensor
resistance out of range
3. Replace thermal well
4. Verify control is not wet or
physically damaged
5. Reset control on/off switch
6. Replace gas control if 8-3 error
persists
See Thermal Well Testing
on page 21
Eight
flashes, four
flashes,
three second
pause
Gas control fault
detected
1. Verify control is not wet or
physically damaged
2. Reset control on/off switch
3. Replace gas control if 8-4 error
persists
1. Replace gas control if
wet or physically damaged
2. Cycle power
3. Replace gas control
Troubleshooting
14