Bradford White RG1D Installation & Operation Instructions page 32

Troubleshooting continued-
(Applies to URG1D models)
LED Status
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,
tw o flashes,
three second
pause
Eight flashes,
three flashes,
three second
pause
Eight flashes,
four flashes,
three second
pause
Nine flashes, one
flash, three
second pause
Nine flashes, tw o
flashes, three
second pause
(Applies to all damper models)
Resettable Thermal Switch Tripped (Open)
Control Status
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
Temperature sensor fault
detected
Electronics fault detected
Gas valve fault detected
Insufficient combustion air
detected, reset system
Chamber temperature
sensor out of
specification, possible
short
Fault
Probable Cause
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 sensor w ires
2. Thermal w ell sensor resistance out of
range
3. Replace thermal w ell
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
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
Insufficient combustion air
1. Verify chamber temperature sensor is
plugged in
2. Replace chamber temperature sensor
Probable Cause
1. Insufficient combustion air
2. Flammable vapor present
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