Viking Range Error Code 5 flashes

The 5-flash error code on a Viking range indicates a DSI (Direct Spark Ignition) control fault. The DSI control module is the electronic brain of the gas ignition system, responsible for generating the high-voltage spark signal, monitoring flame presence via the flame sensor, and managing the ignition sequence timing. When the control detects an internal fault or cannot complete a successful ignition cycle within its programmed parameters, it signals the failure by flashing the indicator light five times in sequence.

This fault can originate from a failed or failing DSI control board itself, or from external conditions that prevent the ignition system from functioning correctly. The DSI module continuously monitors the ignition trial period and flame rectification signal. If the module does not detect a valid flame signal within the allotted trial time, or if it senses an internal logic error, it locks out and displays the 5-flash code. Wiring issues between the DSI board and connected components such as the igniter, gas valve, or flame sensor can also trigger this code by feeding incorrect signals back to the module.

The recommended first diagnostic step is a power cycle, which clears the module's internal lockout state and allows a fresh ignition attempt. If the fault returns after cycling power, the DSI control itself is considered the primary suspect and should be replaced. Before condemning the board outright, technicians should verify that the surrounding components, including wiring harnesses, connectors, the igniter electrode, and the gas supply, are in proper working order to avoid an unnecessary board replacement.