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Error code reference

Bradford White Water Heater Error Code None

No electrical power to the control; power switch is in OFF position or supply voltage is interrupted.

Bradford White codesBradford White water heater codes

No electrical power to the control; power switch is in OFF position or supply voltage is interrupted.

First step from the service manual

Turn power on.

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

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What None means on a Bradford White water heater

This condition on a Bradford White water heater indicates that the electronic control board is receiving no electrical power. The control system requires a stable 120V AC supply to operate the ignition sequence, temperature regulation, and safety monitoring functions. When power is absent, the control cannot execute any operations, and no status indicators or error codes will display on the unit.

The most common triggers for this condition are a power switch left in the OFF position, a tripped circuit breaker, or a blown fuse in the supply circuit. Bradford White water heaters are typically wired to a dedicated branch circuit, and any interruption at the breaker panel, disconnect switch, or the unit's own power switch will result in a complete loss of control power. Loose wiring connections at the terminal block or a failed power switch can also prevent voltage from reaching the control board.

Diagnosing this condition starts with the simplest check: confirming the power switch on or near the unit is in the ON position. If the switch is already on, the next step is verifying that the dedicated circuit breaker at the panel is not tripped or turned off. A multimeter can be used to confirm 120V AC is present at the unit's power input terminals. If voltage is confirmed at the input but the control still shows no signs of life, the issue may be internal wiring, a faulty switch, or a failed control board.

Source: manufacturer service documentation.

Common causes of None

  1. 01

    Power switch in OFF position

    Wiring / connection

    The water heater has a dedicated power switch that may have been turned off intentionally or accidentally. Check the switch on or near the unit and set it to the ON position.

  2. 02

    Tripped or off circuit breaker

    Wiring / connection

    The dedicated circuit breaker for the water heater may have tripped due to an overload or fault. Go to the electrical panel, locate the water heater breaker, and reset it if tripped.

  3. 03

    Interrupted supply voltage

    Wiring / connection

    A power outage, a loose connection at the breaker or terminal block, or a wiring issue in the supply circuit can interrupt voltage to the control. Use a multimeter to confirm 120V AC is present at the unit's power input.

  4. 04

    Faulty power switch

    Part replacement

    The on/off switch on the unit itself can fail internally, interrupting power even when set to ON. A multimeter continuity test across the switch terminals while in the ON position will confirm whether the switch has failed.

  5. 05

    Failed control board

    Part replacement

    If 120V AC is confirmed at the input terminals but the control shows no response, the control board itself may have failed. This is less common and should be considered only after all external power sources have been ruled out.

See the test procedure for each cause

Frequently asked questions about None

What does None mean on a Bradford White water_heater?
This condition indicates that the electronic control board on the Bradford White water heater is receiving no electrical power. It is not a fault code generated by the control itself, but rather the absence of any control activity due to a missing power supply. The cause is typically a power switch in the OFF position or an interruption in the 120V AC supply circuit.
How do I fix the no-power condition on my Bradford White water heater?
Start by checking that the power switch on or near the unit is set to ON. Next, go to your electrical panel and check whether the circuit breaker for the water heater has tripped. If the breaker is good and the switch is on, use a multimeter to verify 120V AC is present at the unit's power input terminals. If voltage is present but the control still does not respond, a faulty switch or control board may need to be replaced.
Is it safe to use my Bradford White water heater if it has no power to the control?
When the control has no power, the water heater will not operate at all, so there is no active heating or ignition occurring. The unit is effectively off, which is not a safety hazard in itself. However, you should investigate the cause of the power interruption before restoring power to rule out any wiring issues or faults that may have tripped the breaker.
Will resetting the circuit breaker clear this condition on a Bradford White water heater?
Yes, if a tripped breaker is the cause, resetting it will restore power to the control and the water heater should resume normal operation. If the breaker trips again shortly after being reset, there may be an underlying electrical fault in the circuit or the unit that requires further diagnosis before the breaker is reset again.
How much does it cost to repair a Bradford White water heater with no power to the control?
If the fix is simply turning on a switch or resetting a breaker, there is no cost. If a failed power switch needs replacement, parts and labor typically range from around $75 to $200 depending on the service provider and part availability. A control board replacement is more involved and can range from $200 to $500 or more, including parts and labor.

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