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Error code reference

Bradford White Water Heater Error Code 5 flashes

Gas Control V1

Bradford White codesBradford White water heater codes

Gas Control V1: Temperature sensor fault. Probable causes: damage to the temperature sensor or temperature sensor resistance out of range.

First step from the service manual

Replace gas control.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What 5 flashes means on a Bradford White water heater

The 5 flashes error code on a Bradford White water heater indicates a Gas Control V1 temperature sensor fault. This fault is generated when the integrated gas control valve's onboard diagnostics detect that the temperature sensor reading is outside of the acceptable resistance range, or that the sensor has sustained physical or electrical damage. The temperature sensor is embedded within the gas control valve assembly and is responsible for continuously monitoring water temperature to regulate burner operation and prevent overheating.

The gas control valve on Bradford White water heaters is a self-contained unit that combines the thermostat, thermopile, and temperature sensing components into a single assembly. Because the temperature sensor is not a separately serviceable component, any fault traced to sensor resistance being out of range or sensor damage points directly to the gas control valve as the failed unit. Resistance drift can occur due to age, heat cycling, or moisture intrusion, while physical damage may result from impact or thermal stress.

Because the sensor cannot be replaced independently, the prescribed first diagnostic step is direct replacement of the gas control valve. There is no field recalibration or resistance adjustment available for this component. Technicians should confirm the fault is active and not an intermittent read before proceeding with replacement, as the new gas control must be matched to the specific water heater model and fuel type.

Source: manufacturer service documentation.

Common causes of 5 flashes

  1. 01

    Failed temperature sensor within gas control valve

    Part replacement

    The temperature sensor's resistance has drifted outside of the acceptable operating range due to age or heat cycling. Since the sensor is integrated into the gas control valve, the entire valve must be replaced.

  2. 02

    Physical damage to gas control valve

    Part replacement

    Impact, corrosion, or thermal stress can physically damage the sensor or its internal connections inside the gas control assembly. Inspect the valve body for visible cracks, corrosion, or signs of overheating.

  3. 03

    Moisture or condensation intrusion

    Part replacement

    Water or condensation entering the gas control valve can cause erratic or out-of-range sensor resistance readings. This is more common in high-humidity environments or after flooding.

  4. 04

    Intermittent electrical fault within the gas control

    Part replacement

    Internal wiring or circuit board issues within the gas control valve can produce false temperature sensor readings. If the fault appears intermittently, allow the unit to cool and recheck before replacing the valve.

See the test procedure for each cause

Frequently asked questions about 5 flashes

What does 5 flashes mean on a Bradford White water heater?
Five flashes on a Bradford White water heater indicates a Gas Control V1 temperature sensor fault. This means the gas control valve has detected that its internal temperature sensor is damaged or reading a resistance value outside of the acceptable range. The gas control valve is the component that requires replacement to resolve this fault.
Can I fix the 5 flashes error on my Bradford White water heater myself?
The repair for this fault requires replacing the gas control valve, which involves working with gas supply lines and connections. This work should be performed by a licensed plumber or qualified appliance technician. Attempting a gas valve replacement without proper training and tools can create a serious safety hazard.
Is it safe to use my Bradford White water heater when it shows 5 flashes?
A 5 flashes fault means the water heater's temperature sensor is not functioning correctly, which may prevent the unit from regulating water temperature safely. It is not recommended to continue using the water heater until the fault is diagnosed and the gas control valve is replaced. Operating the unit with a faulty temperature sensor could lead to uncontrolled heating or burner shutdown.
Will resetting my Bradford White water heater clear the 5 flashes error?
Resetting the water heater will not permanently clear the 5 flashes error if the gas control valve's temperature sensor is genuinely out of range or damaged. The fault is hardware-based and will return after any reset as long as the underlying component failure exists. Replacement of the gas control valve is the required corrective action.
How much does it cost to fix the 5 flashes error on a Bradford White water heater?
The cost to resolve a 5 flashes fault typically involves the price of a replacement gas control valve plus labor. Gas control valves generally range from $100 to $300 or more depending on the model, and professional labor can add another $100 to $250 depending on your location and the technician's rates. Total repair costs commonly fall in the range of $200 to $550.

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