Bradford White Water Heater Error Code 5 flashes (WR Electronic)

The 5-flash fault code on a Bradford White water heater equipped with the White Rodgers electronic control board indicates a broad electronics, sensor, or gas valve fault has been detected by the control. This fault category covers several potential failure points within the control circuit, including internal board failures, gas valve communication errors, and temperature sensor malfunctions. The White Rodgers control module continuously monitors these components during operation, and when it detects an out-of-range or non-communicating signal from any of these subsystems, it locks out and signals the 5-flash sequence.

A critical and often overlooked cause of this fault is moisture intrusion. The diagnostic description specifically calls out the possibility that the control board itself may be wet or physically damaged. Water can enter the control enclosure due to condensation, a nearby leak, or flooding, and even minor moisture exposure can cause short circuits or corrupted sensor readings that trigger this lockout. Inspecting the control board and wiring harness for corrosion, water staining, or physical burn marks is an important early diagnostic step.

Before replacing any components, the first action is to verify that all electrical connections to the control board, gas valve, and sensors are fully seated and secure. Loose or corroded terminals can cause intermittent signal faults that mimic a failed component. If connections are confirmed tight and the fault persists after a reset attempt, the control board itself is the primary replacement candidate, as the fault logic and sensor monitoring all run through that single integrated unit.