Bradford White · Water Heater error code

8 flashes (ICON 1.0)Pilot still lit with control set to OFF

Cross-checked Licensed pro only

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Stop: this involves gas or the sealed refrigerant system.

OnCall Tech only describes the symptom. Gas work needs a licensed gas technician, and refrigerant work requires EPA Section 608 certification. If you smell gas: shut off the supply if it is safe, do not switch anything on or off, ventilate, leave the building and call the gas utility.

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

Related diagnostic guides

Guide · Water Heater

Gas water heater: pilot won't light or won't stay lit (diagnose and refer)

Standing-pilot gas tanks use a thermocouple or thermopile heated by the pilot to hold the gas valve open; FVIR models add a thermal switch and flame arrestor. This is a gas appliance: the tech's role here is to read the status light, confirm gas supply, note symptoms and hand off. Pilot assembly, thermocouple/thermopile, burner and gas valve work go to a licensed plumber or gas technician.

5 steps ~20 minadvanced

Guide · Water Heater

Power-vent gas water heater: blower won't start, runs without firing, or locks out

Power-vent tanks add a 120 V blower, an air pressure switch and often a vent temperature limit. Most no-heat calls are electrical supply, a kinked or water-filled pressure switch tube, condensate in the blower, or a restricted vent. The tech checks power and the low-voltage safety chain and inspects visually; gas valve, burner, igniter/flame sensor and vent repairs are referred to a licensed gas technician.

10 steps ~45 minmoderate

Guide · Water Heater

Known issue: Rheem / Ruud gas water heater flammable vapor (FV) sensor lockouts

Rheem and Ruud FVIR gas water heaters with electronic controls use a flammable vapor sensor near the base that locks out the burner when vapors are detected or when the sensor reads out of range. Rheem issued a technical bulletin about sensors whose resistance falls below the gas control's minimum, causing a lockout that only a replacement sensor clears. Genuine vapors (gasoline, solvents, some cleaners) can also trip it. Rheem sells the sensor as a replacement kit; techs replace a tripped sensor rather than try to reuse it.

7 steps ~45 minmoderate

More Bradford White water heater codes

Bradford White · Water Heater

1 flash every 4 s (green)

Standby: pilot lit, burner off

Cross-checked

Bradford White · Water Heater

1 flash every second (green)

Heating: main burner on

Cross-checked

Bradford White · Water Heater

2 flashes (yellow)

Low thermopile voltage

Single source Licensed pro only

Bradford White · Water Heater

3 flashes (ICON 1.0)

Expected temperature rise not seen

Cross-checked High-voltage / caution

Bradford White · Water Heater

4 flashes (red)

Temperature cut-out limit reached

Cross-checked Licensed pro only

Bradford White · Water Heater

5 flashes (red)

Temperature sensor / electronics fault

Single source Licensed pro only