Bradford White Water Heater Error Code 1 flash every sec green (V2)

The 1-flash-per-second green LED pattern on a Bradford White water heater equipped with a V2 control board is not an error condition. It is a normal operational status indicator confirming that the gas valve main valve port is open and the main burner is actively firing. This signal comes from the electronic ignition control module, which monitors and communicates the state of the heating sequence through the diagnostic LED. When this light is flashing, the control board has successfully completed the ignition sequence, confirmed flame presence via the flame sensor, and opened the main valve to sustain combustion.

During normal operation, this flashing pattern will continue for as long as the water temperature inside the tank remains below the user-selected setpoint. The control board continuously monitors incoming temperature data from the thermistor or thermostat sensor. Once the stored water reaches the target temperature, the control will de-energize the main valve, shutting off gas flow to the burner. The LED pattern will then transition to a different status indication reflecting standby mode.

No technician intervention is required when this flash pattern is observed on its own. It simply means the heater is doing exactly what it is designed to do: heating water. If a technician or homeowner observes this pattern for an unusually extended period, it may be worth checking whether the setpoint is appropriate for the household demand, whether incoming cold water flow is unusually high, or whether heat loss from inadequate insulation is causing prolonged recovery cycles. None of these are control board faults.