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Error code reference

Viking Dishwasher Error Code Flash all LEDs

AC power loss

AC power loss – power loss occurred during a running cycle.

First step from the service manual

Reset by pressing and holding START for 3 seconds (325/450 only).

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

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What Flash all LEDs means on a Viking dishwasher

When all LEDs flash simultaneously on a Viking dishwasher, the control board is signaling that AC power was interrupted while a wash cycle was actively running. The machine stores cycle state information in its control memory, and when power drops unexpectedly, the board detects the discontinuity upon restoration and flags the condition by illuminating all indicator lights at once. This is a protective status alert rather than a component failure code.

The power loss event can originate from the home electrical supply, a tripped circuit breaker, a loose connection at the wall outlet or junction box, or a brief utility grid interruption. In each case, the dishwasher simply lost the voltage it needed to continue the cycle. The control board cannot distinguish between a momentary flicker and a sustained outage, so it treats any mid-cycle power loss the same way and holds the flashing LED state until the operator acknowledges it.

On Viking 325 and 450 series dishwashers, the designated reset procedure is to press and hold the START button for 3 seconds. This clears the alert from the control board and allows the machine to return to standby. If the LEDs continue to flash after performing the reset, or if the condition recurs frequently, further investigation of the home circuit, the door latch switch, and the power supply connections is warranted before resuming normal operation.

Source: manufacturer service documentation.

Common causes of Flash all LEDs

  1. 01

    Household power interruption

    Wiring / connection

    A brief utility outage, grid fluctuation, or momentary voltage drop is the most common trigger. Check whether other appliances or lights in the home were also affected at the same time.

  2. 02

    Tripped circuit breaker

    Wiring / connection

    The dishwasher circuit breaker may have tripped due to an overload or a fault. Locate the breaker panel, identify the dishwasher circuit, and reset any tripped breakers before running the appliance again.

  3. 03

    Loose or faulty power connection

    Wiring / connection

    A loose wire at the wall outlet, the junction box, or the terminal block inside the dishwasher can cause intermittent power loss during operation. Inspect connections for signs of arcing, corrosion, or looseness.

  4. 04

    Faulty wall outlet or power cord

    Part replacement

    A deteriorating outlet or damaged supply cord can drop power unpredictably under the load of a running cycle. Test the outlet with a multimeter or plug-in tester and inspect the cord for damage.

  5. 05

    Control board power supply failure

    Part replacement

    If power interruptions occur repeatedly with no external electrical cause, the internal power supply section of the control board may be failing. This typically requires professional diagnosis and board replacement.

See the test procedure for each cause

Frequently asked questions about Flash all LEDs

What does Flash all LEDs mean on a Viking dishwasher?
Flashing all LEDs on a Viking dishwasher indicates that AC power was lost while a wash cycle was running. The control board detects the mid-cycle power interruption and activates all indicator lights as a status alert. It is not a component failure code but rather a notification that the cycle ended abnormally. Performing the reset procedure clears the alert so the dishwasher can be used again.
How do I reset the flashing LED error on my Viking dishwasher?
On Viking 325 and 450 series dishwashers, press and hold the START button for 3 seconds to reset the control board and clear the flashing LED condition. After releasing the button, the LEDs should return to normal standby behavior. Once reset, you can start a new cycle as usual. If the lights continue to flash after this step, inspect the home circuit and power connections before attempting another reset.
Is it safe to use my Viking dishwasher after all LEDs flash?
Yes, in most cases the dishwasher is safe to use after the flashing LED alert is cleared with a reset. The condition simply means power was interrupted during a cycle, not that the appliance is damaged. However, if the flashing recurs repeatedly, investigate the cause of the power interruptions before continuing to use the unit, as frequent power loss could point to an underlying electrical issue.
Will resetting the dishwasher clear the flashing LED error permanently?
The reset clears the alert from the control board immediately, but if the root cause of the power interruption is not addressed, the condition will return the next time power is lost during a cycle. A one-time outage or tripped breaker typically will not cause the issue to recur after a reset. Repeated occurrences suggest a persistent problem with the home circuit or the dishwasher's power supply connections.
How much does it cost to repair a Viking dishwasher showing the flashing LED error?
If the issue is simply a household power interruption, the reset costs nothing. If a faulty wall outlet needs replacement, repair costs typically range from $75 to $200 depending on labor rates. A control board replacement, if required for a persistent internal power supply fault, can range from $300 to $600 or more including parts and labor. Diagnosing the exact cause first is important to avoid unnecessary repairs.

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