Bradford White Water Heater Error Code 5 flashes (V1)

Five flashes on a Bradford White water heater indicates a temperature sensor fault. The gas valve's integrated temperature sensor is either damaged or reading a resistance value outside the acceptable range. The unit will not heat water normally while this fault is active. The gas valve assembly typically requires replacement to resolve the issue.

The 5-flash fault code is a safety lockout, meaning the heater has stopped normal operation to prevent potentially unsafe conditions from a faulty temperature sensor. The unit will not fire the main burner while this code is active, so the immediate risk is loss of hot water rather than a hazardous condition. However, any time gas appliance components are being inspected or replaced, standard gas safety precautions apply, including ensuring the gas supply is shut off before beginning work.

If the issue is resolved by simply drying out the control or cycling the knob, there is no parts cost involved. If the gas valve assembly requires replacement, parts costs typically range from $150 to $400 depending on the specific model, with labor adding an additional $100 to $250 or more depending on your region and the technician. Total repair costs for a gas valve replacement generally fall in the range of $250 to $650.

The first step is to check the gas valve control for any moisture or visible physical damage, which does not require tools or parts. You should then turn the set point knob to OFF, cycle it back to PILOT, and relight the pilot to see if the fault clears. If the 5-flash code returns after this reset, the gas valve assembly needs to be replaced, which involves working with the gas supply line and is typically a job for a licensed plumber or gas appliance technician.

A reset by turning the set point knob to OFF and then to PILOT may clear the code if the fault was triggered by a temporary condition such as moisture on the control. If the temperature sensor has actually failed or the gas valve is damaged, the 5-flash code will return after the reset and the gas valve assembly will need to be replaced. Repeated resets without addressing the root cause will not resolve the underlying fault.