Bradford White Defender Safety System 238-48248-00 Instruction Manual Supplement page 14

Troubleshooting continued-
LED Status
Six flashes, tw o
flashes, three
second pause
(Soft Lockout)
Six flashes, three
flashes, three
second pause
(Soft Lockout)
Six flashes, four
flashes, three
second pause
Seven flashes,
three second
pause
Eight flashes, one
flash, three
second pause
Eight flashes,
three flashes,
three second
pause
Eight flashes, four
flashes, three
second pause
Resettable Thermal Switch Tripped (Open)
Control Status
Relay not w orking properly
during burner operation,
system auto resets after
(5) minutes
Pilot flame extinguished,
system auto resets after
(5) minutes
Undesired false pilot flame
sensed, system auto
resets
Flammable vapor sensor or
resettable thermal sw itch
fault detected, see
w arning label
Flammable vapor sensor
out of specification,
possible short
Thermal w ell sensor
damaged or unplugged or
gas valve electronics fault
detected
Gas valve fault detected
Fault
Probable Cause
Faulty relay
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 valve
5. Insufficient combustion air
Pilot valve stuck in open position
1. Flammable vapor present
2. Flammable vapor sensor exposed to
excessive moisture
3. Flammable vapor sensor exposed to
extreme ambient temperature
4. Resettable thermal sw itch open
1. Flammable vapor sensor out of
specification
2. Possible short in flammable vapor sensor
or resettable thermal sw itch w iring
1. Damage to thermal w ell w ires
2. Thermal w ell sensor resistance out of
range
3. Replace thermal w ell
4. Verify control is not w et or physically
damaged
5. Reset control on/off sw itch
6. Replace electronic module if 8-3 error
persists
1. Verify control is not w et or physically
damaged
2. Reset control on/off sw itch
3. Replace gas control if 8-4 error persists
Probable Cause
1. Insufficient combustion air
2. Flammable vapors present
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