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Error code reference

Bradford White Water Heater Error Code 1 flash (V1)

Pilot flame is detected and gas control is powered, waiting for setpoint knob to be turned to a water…

Bradford White codesBradford White water heater codes

Pilot flame is detected and gas control is powered, waiting for setpoint knob to be turned to a water temperature setting; or water heater is satisfied and operating normally.

First step from the service manual

Turn setpoint knob to desired setting. Normal operation.

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

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What 1 flash (V1) means on a Bradford White water heater

The 1 flash (V1) status code on a Bradford White water heater is not an error condition. It is a normal operational indicator produced by the Hydrojet gas control valve system. When the control board flashes once in a repeating pattern, it is communicating one of two benign states: either the pilot flame has been successfully established and the gas control is fully powered but the setpoint knob has not yet been turned to an active temperature setting, or the water heater has reached its target temperature and is in a satisfied, standby state. In both cases, the system is functioning as designed.

The pilot detection circuit within the gas control confirms that a stable pilot flame is present. Once that signal is verified, the control waits for a demand condition, which is initiated by rotating the setpoint knob to a water temperature position. If the knob remains in a non-heating position such as the pilot or vacation setting, the 1 flash code will persist because no call for heat has been issued. The burner will not fire until the control receives both a valid pilot signal and a thermostat demand.

If the 1 flash code appears during what should be normal heating operation, the most likely explanation is that the setpoint knob was inadvertently left in or returned to a standby position, or the water in the tank has already reached the dialed-in setpoint and the heater is simply waiting for temperature to drop before cycling on again. No parts replacement or service intervention is required in either scenario. Simply confirm the knob is set to the desired temperature and monitor the unit for a normal heating cycle.

Source: manufacturer service documentation.

Common causes of 1 flash (V1)

  1. 01

    Setpoint knob not turned to a temperature setting

    Wiring / connection

    The most frequent reason for this code is that the setpoint knob is still positioned at pilot, vacation, or a non-temperature setting after initial lighting. Rotating the knob to the desired water temperature will immediately initiate a call for heat.

  2. 02

    Water temperature already at setpoint

    Wiring / connection

    If the tank water has reached the temperature dialed on the setpoint knob, the gas control enters a satisfied state and displays the 1 flash code until the water cools enough to trigger another heating cycle. This is completely normal behavior.

  3. 03

    Recent pilot lighting procedure just completed

    Wiring / connection

    After following the pilot lighting sequence, the control powers up and confirms the pilot flame before accepting a thermostat demand. The 1 flash code appears during this brief transition period and resolves once the knob is moved to a temperature setting.

  4. 04

    Knob inadvertently moved to a standby position

    Wiring / connection

    Physical contact with the knob during cleaning, inspection, or access panel removal can shift it away from the active temperature range. Check that the knob is firmly set to the intended temperature position.

See the test procedure for each cause

Frequently asked questions about 1 flash (V1)

What does 1 flash (V1) mean on a Bradford White water_heater?
The 1 flash code indicates that the pilot flame is detected and the gas control is powered, but the unit is either waiting for the setpoint knob to be turned to a water temperature setting or the water has already reached the target temperature and the heater is in a satisfied standby state. This is a normal status indication, not a fault or error. No service action is required beyond confirming the setpoint knob is properly positioned.
How do I fix the 1 flash code on my Bradford White water heater?
In most cases, no repair is needed. Simply turn the setpoint knob to your desired water temperature setting if it is currently in a standby or pilot position. If the knob is already set to a temperature and hot water is being delivered normally, the heater is operating correctly and the code reflects a satisfied state. Monitor the unit through one full heating cycle to confirm normal operation.
Is the 1 flash code on a Bradford White water heater a safety concern?
No, the 1 flash code is not a safety warning. It confirms that the pilot flame is present and the control system is powered and functioning. The code indicates normal standby or satisfied operation, meaning the safety and ignition systems are working as intended.
Will resetting the gas control clear the 1 flash code?
A reset is not necessary to clear this code. Because the 1 flash status reflects normal operation rather than a lockout or fault condition, the display will automatically change once the setpoint knob is turned to an active temperature setting and the burner fires in response to a heating demand. Resetting the control would require relighting the pilot and would not resolve anything.
How much does it cost to repair a Bradford White water heater showing a 1 flash code?
There is no repair cost associated with the 1 flash code because it is not a fault condition. The only action needed is turning the setpoint knob to the desired temperature setting, which requires no parts and no technician visit. If you observe this code alongside an actual lack of hot water or other symptoms, a service call to diagnose an underlying issue could range from $75 to $200 or more depending on your location and what is found.

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