Bradford White HE-4-50S6FSX - Manual (Page 8)

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