Bradford White · Water Heater error code

1 flash every 4 s (green)Standby: pilot lit, burner off

Cross-checked Power off, standard tools

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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

More Bradford White water heater codes

Bradford White · Water Heater

1 flash every second (green)

Heating: main burner on

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2 flashes (yellow)

Low thermopile voltage

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4 flashes (red)

Temperature cut-out limit reached

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5 flashes (red)

Temperature sensor / electronics fault

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6 flashes (red)

Door/chamber temperature sensor failure

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9 flashes (red)

Tank leak detected

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