Viking Range Error Code DSI LED Continuous

The DSI LED Continuous fault on a Viking range indicates a problem within the Direct Spark Ignition control system. In normal operation, the DSI control module manages the ignition sequence for the gas burner: it sends voltage to the spark igniter, monitors the flame sensor for confirmation of ignition, and then holds the gas valve open once flame is proven. When the DSI status LED remains on continuously rather than cycling or extinguishing after a successful ignition attempt, the module has detected an internal or circuit-level fault that prevents it from completing or maintaining this sequence correctly.

The most common root cause is a failed DSI control board itself. The module contains internal logic circuits and sensing components that can degrade over time due to heat exposure, voltage spikes, or age-related component failure. A continuous LED state, as opposed to a flashing pattern, typically signals that the board has entered a locked-out or faulted state from which it cannot recover on its own. This is distinct from ignition lockout faults caused by external components like a dirty flame sensor or faulty igniter, which usually present with different LED behavior.

The recommended first diagnostic step is a power cycle: disconnect the range from power for at least 30 seconds, then restore power and attempt ignition again. This clears any transient fault that may have triggered the lockout. If the LED returns to a continuous-on state after the power cycle and retry, the DSI control module itself is the identified failed component and requires replacement. External wiring connections to the board should also be inspected for loose pins or heat damage before condemning the board.