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

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