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Error code reference

Viking Range Error Code 3 flashes then 4 seconds OFF

Model Header error displayed on cycle light on control panel.

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Model Header error displayed on cycle light on control panel.

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What 3 flashes then 4 seconds OFF means on a Viking range

The 3 flashes then 4 seconds OFF pattern on a Viking range control panel indicates a Model Header error. This error originates in the control board's firmware or EEPROM memory, where a stored model identification header is either missing, corrupted, or does not match the expected configuration for the installed control board. The cycle light on the control panel flashes this sequence repeatedly to signal that the control system cannot properly identify the appliance model it is managing.

The Model Header is a data record written into the control board's non-volatile memory during manufacturing or programming. It tells the control system which feature set, burner configuration, and operational parameters apply to the specific range. If this header becomes corrupted due to a power surge, a failed firmware update, or memory degradation over time, the board may lose the ability to operate normally and will instead display this fault code.

Because this fault is rooted in the control board's internal memory or programming, it is not typically caused by a sensor failure, wiring issue, or mechanical component. The most likely resolutions involve reprogramming or replacing the electronic control board. A power reset may temporarily clear the display, but if the underlying memory corruption persists, the error will return. This type of fault generally requires hands-on diagnosis of the control board and, in many cases, board replacement or reflashing by a qualified technician.

Source: manufacturer service documentation.

Common causes of 3 flashes then 4 seconds OFF

  1. 01

    Corrupted control board memory

    Part replacement

    Power surges or voltage fluctuations can corrupt the EEPROM or firmware memory on the control board, erasing or damaging the stored model header data. This is the most common cause and typically requires board replacement or reprogramming.

  2. 02

    Failed or incomplete firmware update

    Wiring / connection

    If a firmware update was interrupted or improperly applied, the model header data may not have been written correctly to the control board's memory. The board will continue to signal this fault until the correct firmware is successfully loaded.

  3. 03

    Incorrect replacement control board installed

    Part replacement

    If the control board was previously replaced with a unit that does not match the range's specific model, the model header stored on the new board may be incompatible. Verify the board part number matches the original.

  4. 04

    Control board failure due to age or heat damage

    Part replacement

    Over time, the non-volatile memory components on the control board can degrade, particularly in high-heat environments. Physical inspection may reveal burnt components or damaged traces on the board.

  5. 05

    Intermittent power supply issue

    Wiring / connection

    Unstable power delivery to the control board can cause repeated memory corruption events. Check the power connection and outlet voltage to rule out an underlying electrical supply problem before replacing the board.

See the test procedure for each cause

Frequently asked questions about 3 flashes then 4 seconds OFF

What does 3 flashes then 4 seconds OFF mean on a Viking range?
This flashing pattern on the cycle light indicates a Model Header error in the control board. The control system cannot read or recognize the model identification data stored in its memory. This is an internal electronics fault, not a sensor or mechanical issue. The range may be unable to operate normally until the control board is reprogrammed or replaced.
Can I fix the Model Header error on my Viking range myself?
This fault is rooted in the control board's internal memory or programming, which limits DIY repair options significantly. If a power reset does not clear the error, resolving it typically requires a technician who can reprogram or replace the control board. Attempting to replace the board without verifying part compatibility may result in the same error appearing on the new board.
Is it safe to use my Viking range while the 3-flash error is displayed?
A Model Header error means the control board cannot confirm its own configuration, which may prevent it from properly managing range functions. Using the range in this state is not recommended, as the control system may not operate burners or oven functions within safe parameters. The range should be serviced before regular use resumes.
Will resetting the power clear the 3 flashes then 4 seconds OFF error on a Viking range?
A power reset may temporarily stop the fault display, but if the model header data in the control board's memory is corrupted, the error will return after power is restored. A reset does not repair corrupted firmware or EEPROM data. Persistent errors after a reset indicate the control board needs professional attention.
How much does it cost to repair a Viking range with a Model Header error?
Repair costs vary depending on whether the control board can be reprogrammed or must be replaced. Control board replacement on Viking ranges typically ranges from a few hundred dollars to over five hundred dollars when including parts and labor. Diagnostic service fees may also apply before the repair is performed.

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