Bradford White D-80T-725-3X User Manual
Technical support

ICON - Power Vent and Power Direct Vent
Water Heaters
ERROR CODE
DEFINITION
SERVICE ACTION
POSSIBLE PARTS NEEDED
No LED
No power to the unit or switch is off
Turn power on
None
Verify 120 volts present at outlet
One short flash every 4 seconds
Standby mode/unit up to temp
None
None
Bright/dim alternating LED
Thermostat calling for heat
None
None
Short flash once every second
Weak pilot signal on last call for heat
Inspect and clean pilot assembly
1) Pilot assembly
Check continuity on flame sensor
2) Gas valve
Two flashes three second pause
Pressure switch not working - closed position
Inspect pressure switch tubing and ports
1) Pressure switch
Bypass pressure switch
2) Temp switch
& temp switch for testing
Measure vacuum on pressure switch
Three Flashes three second pause
Pressure switch or temp switch stuck open
Check vent for blockage
1)Pressure switch
Verify blower spinning up to speed
2) Temp switch
Measure vacuum on pressure switch
3) Blower assembly
Inspect pressure switch tubing and ports
4) Gas valve
Bypass pressure switch
& temp switch for testing
Four flashes three second pause
High tank temperature
Check temp probe ohms -
1) Thermowell
compare with sensor temp chart
2) Gas valve
Five flashes three second pause
False pilot flame sensed/pilot valve stuck open
Check for flame sensor short to ground
1) Pilot assembly
Gas valve stuck open - replace valve
2) Gas valve
Six flashes -
Pilot failed to light
Inspect and clean pilot,
1) Pilot assembly
one flash, three second pause
Check connection at gas valve
Verify gas flow
2) Gas valve
Six flashes -
Pressure switch or temp switch
Check vent for blockage
1) Pressure switch
two flashes, three second pause
opened during operation
Measure vacuum on pressure switch
2) Temp switch
Verify blower spinning up to speed
3) Blower assembly
Bypass pressure switch
& temp switch for testing
Six flashes -
Pilot flame extinguished
Inspect and clean pilot
1) Pilot assembly
three flashes, three second pause
Check connection at gas valve
2) Gas valve
Six flashes -
False pilot flame sensed/pilot valve stuck open
Check for flame sensor short to ground
1) Pilot assembly
four flashes, three second pause
Verify gas valve stuck open - replace valve
2) Gas valve
Seven flashes
Flammable vapor sensor fault
Verify resistance is between 3.0 - 4.8 KOhms 1) Flammable vapor sensor
Verify no flammable vapors present
2) Harness
Check sensor harness
Eight flashes -
Flammable vapor sensor out of spec, possible short
Verify resistance is between 3.0 - 4.8 KOhms 1) Flammable vapor sensor
one flash, three second pause
Verify no flammable vapors present
2) Harness
Check sensor harness
3) Gas valve
Eight flashes -
Thermowell sensor damaged or unplugged
Check temp probe ohms -
1) Thermowell
two flashes, three second pause
compare with sensor temp chart
2) Gas valve
Eight flashes -
Gas valve electronics fault
Reset gas valve, If problem persists
1) Gas valve
three flashes, three second pause
replace gas valve
Eight flashes -
Gas valve fault detected
Reset gas valve, If problem persists
1) Gas valve
four flashes, three second pause
replace gas valve
NOTE:
Check all wire connections
Check gas inlet and manifold gas pressure
Check for grounding connections
Technical Support
800-334-3393
- D-65T-625-3X PDV-100S-250-3X PDV-100S-200-3X PDV-100S-150-3X PDV-80S-250-3X PDV-80S-200-3X PDV-80S-150-3X PDV-100T-360-3X PDV-80T-300-3X D-100S-250-3X D-100S-199-3X D-100L-300-3X D-100L-270-3X D-100L-250-3X D-100L-199-3X D-80L-505-3X D-80L-450-3X D-80L-399-3X D-80T-505-3X D-80T-425-3X D-65T-399-3X D-65T-370-3X D-75T-300-3X D-100T-250-3X D-100T-199-3X D-80T-250-3X D-80T-199-3X D-80T-180-3X D-75T-160-3X D-75T-125-3X D-38T-155-3X EF-100T-399-3X EF-100T-300-3X EF-100T-250-3X EF-100T-199-3X EF-100T-150-3X EF-60T-199-3X EF-60T-150-3X EF-60T-125-3X DH-75T-60FB-3X DH-65T-55FB-3X DH-50T-50FB-3X U-TW4-75S-76R-3N U-TW4-65S-60FR-3N U-TW4-50S-60FR-3N U-PDX-75S-55FR-3N U-PDX-65S-55FR-3N U-PDX-50S-50FR-3N PDX-75S-70FB-3N PDX-65S-65FB-3N PDX-50S-60FB-3N TW4-75S-76B-3N TW4-65S-70FB-3N TW4-50S-67FB-3N TW-55X-78B-3N TW-25X-76B-3N PDX2-75T6FSX PDX2-65T6FSX PDX2-50T6FSX