Bradford White PE-2-XR504T6FSX - Manual (Page 14)

14
Troubleshooting continued-
LED Status Control Status Probable Cause
Six f lashes, t w o
f lashes, three
second pause
(Sof t Lockout )
Relay not w orking properly
during burner operat ion,
syst em aut o reset s aft er
(5) minut es
Fault y relay
Six f lashes, t hree
f lashes, three
second pause
(Sof t Lockout )
Pilot f lame ext inguished,
syst em aut o reset s aft er
(5) minut es
1. Unst able pilot
2. Pilot t ube block or restrict ed
3. Oxidat ion build-up on pilot elect rode
4. Wire damage to pilot assembly or bad
connect ion at gas valve
5. Insuf f icient combust ion air
Six f lashes, f our
f lashes, three
second pause
Undesired f alse pilot f lame
sensed, syst em auto
resets
Pilot valve st uck in open posit ion
Seven f lashes,
three second
pause
Flammable vapor sensor or
reset t able t hermal sw it ch
f ault det ect ed, see
w arning label
1. Flammable vapor present
2. Flammable vapor sensor exposed t o
excessive moist ure
3. Flammable vapor sensor exposed t o
ext reme ambient t emperat ure
4. Reset t able t hermal sw it ch open
Eight f lashes, one
flash, t hree
second pause
Flammable vapor sensor
out of specif icat ion,
possible short
1. Flammable vapor sensor out of
specif icat ion
2. Possible short in f lammable vapor sensor
or reset t able t hermal sw itch w iring
Eight f lashes,
t hree f lashes,
three second
pause
Thermal w ell sensor
damaged or unplugged or
gas valve electronics fault
det ected
1. Damage t o t hermal w ell w ires
2. Thermal w ell sensor resist ance out of
range
3. Replace t hermal w ell
4. Verif y cont rol is not w et or physically
damaged
5. Reset cont rol on/of f sw it ch
6. Replace elect ronic module if 8-3 error
persist s
Eight f lashes, f our
f lashes, three
second pause Gas valve f ault det ect ed
1. Verif y cont rol is not w et or physically
damaged
2. Reset cont rol on/of f sw it ch
3. Replace gas cont rol if 8-4 error persist s
Fault Probable Cause
Resettable Thermal Switch Tripped (Open)
1. Insufficient combustion air
2. Flammable vapors present