Viking Range Error Code 3 flashes then 4 seconds OFF (cycle light)

The 3 flashes then 4 seconds OFF cycle light pattern on a Viking range indicates a Model Header error. This fault originates in the control board's firmware or memory configuration, specifically in the section that stores and reads the model identification data. The control board uses this header information to determine the correct operating parameters, burner configurations, and feature sets for the specific range model it is installed in. When the board cannot correctly read or validate this model header data, it flags the error through the repeating flash cycle.

A Model Header error typically points to a problem within the main control board itself, either due to corrupted memory, a failed EEPROM or flash storage component on the board, or a mismatch between the programmed firmware and the physical appliance. In some cases, a power surge or voltage spike can corrupt the stored model data without causing visible physical damage to the board. The board may still power on and appear partially functional, but the control logic cannot initialize correctly without valid model header data.

Because the fault is rooted in the control board's internal data integrity, external components such as sensors, igniters, or wiring harnesses are rarely the root cause of this specific code. Diagnosis typically centers on the control board itself. A reset may temporarily clear the display, but if the underlying memory or firmware issue persists, the error will return during the next power cycle or initialization sequence.