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LED Status Control Status Probable Cause Service Procedure
Six flashes ,
two flashes,
three second
pause (Soft
Lockout)
Relay no t wor king
properly during
burner operation,
system auto resets
after (5) minutes
Faulty relay See RelayReplacement on
page 28
Six flashes ,
three
flashes,
three second
pause (Soft
Lockout)
Pilot fla me
exting uishe d,
system auto resets
after (5) minutes
1. Unsta ble pilo t
2. Pilot tube block or restricted
3. Oxida tion bu ild-up on pilot
electrode
4. Wire damage to pilot
assembly orbad connection at
gas control
5. Insufficient combustion air
6. Insuffic ient
g
as
p
ressure
1.See Burner Inspection
on page 17
2-4. See P ilot Insp ection,
Testing andReplacement
on page 19
5. Refer to Installation&
Operat ion Manua l
Six flashes ,
four flas hes,
three second
pause
Undesired false
pilot flame sensed,
system auto resets
Pilot valve stuck inopen 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 excessivemoisture
3.Flammable vapor sensor
exposed to extreme ambient
temperature
4. Resettable thermal switch
o
p
en
See FlammableVapor
Senso r Testing o n page 27
Eight
flashes, one
flash, th ree
second
pause
Flammable vapor
sensor outof
specifica tion,
possible short
1.Flammable vapor sensorout
of spe cification ; verify Flamma ble
Vapor Sen sor (FVS) resis tance is
not below 25 k.
2. Possible short in flammable
vapor sensoror resettable
thermal s witch w irin
g
See FlammableVapor
Senso r Testing o n page 27
Eight
flashes,
three
flashes,
three second
pause
Thermal well sensor
damaged or
unplugged or gas
contro l electro nics
fault detected
1. Damageto thermal well wires
2.Thermal well sensor
resistance outof range
3. Repla ce the rmal well
4. Verify control is not wet or
physica lly damag ed
5. Rese t contro l on/off s witch
6. Replace gas control if8-3 error
persists
See Thermal Well Testing
on page 21
Eight
flashe s, four
flashes,
three second
pause
Gas con trol fault
detected
1. Verify control is not wet or
physica lly damag ed
2. Rese t contro l on/off s witch
3. Replace gas control if8-4 error
persists
1. Repla ce gas contro l if
wet or physicallydamaged
2. Cycle power
3. Replace gas control
Troubleshooting
14