Bradford White Water Heater Error Code 1 flash every sec (WR Electronic)

On Bradford White water heaters equipped with the White Rodgers electronic control module, a steady flash pattern of one blink per second is not a fault or error condition. This pattern is the control board's way of communicating normal, active operation. It specifically indicates that the main gas valve is open, the main burner has successfully ignited, and the thermostat is actively calling for heat. The water heater is functioning exactly as intended when this pattern is displayed.

The White Rodgers electronic control integrates ignition sequencing, flame sensing, and thermostat logic into a single module. During a normal heating cycle, the control receives a call for heat from the thermostat when water temperature drops below the setpoint. The igniter is energized, the gas valve opens, and flame is established. Once the control confirms stable combustion through its flame sense circuit, it signals this active burner state with the one-flash-per-second indicator. This pattern will continue for the duration of the heating cycle.

When the water reaches the target temperature, the thermostat signal stops, the gas valve closes, and the burner shuts off. The flash pattern will then change to reflect standby mode. Technicians and homeowners should only be concerned if this one-flash pattern continues indefinitely without the unit satisfying the setpoint, which could suggest a separate issue such as excessive hot water demand, incorrect thermostat calibration, or heat loss in the system. The flash itself, however, requires no corrective action.