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Error code reference

Viking Range Error Code No LED

No power to the DSI (Direct Spark Module)

Viking codesViking range codes

No power to the DSI (Direct Spark Module). Check wiring.

First step from the service manual

Check wiring to DSI board.

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

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What No LED means on a Viking range

The "No LED" condition on a Viking range indicates that the DSI (Direct Spark Ignition) module is receiving no power. The DSI board is the control component responsible for generating the high-voltage spark signal that ignites the gas burners. Without power reaching this board, the ignition system is completely non-functional, meaning the burners cannot be lit electronically. This condition is not a fault code generated by the board itself, but rather an absence of any activity from the board, which points directly to a power supply issue upstream of the module.

The most common cause of this condition is a wiring problem between the power source and the DSI board. This includes broken or disconnected wire harness connectors, damaged wire insulation, corroded terminals, or a failed inline fuse or thermal limiter that feeds the module. The DSI board typically receives its supply voltage from the main wiring harness, so any interruption along that path will result in a completely dead module with no LED activity.

Diagnosis begins at the wiring harness connected to the DSI board. Technicians should inspect all connectors for secure seating, corrosion, or heat damage. Voltage should be confirmed at the board's power input terminals using a multimeter. If voltage is present but the board shows no activity, the DSI module itself may be failed internally. If no voltage is present, the wiring path back to the power source must be traced to locate the break or failed protective component.

Source: manufacturer service documentation.

Common causes of No LED

  1. 01

    Disconnected or loose wiring harness

    Wiring / connection

    The connector supplying power to the DSI board may have come loose or partially unseated, cutting off all voltage to the module. Inspect all connectors at the DSI board for firm seating and no signs of pulling or stress.

  2. 02

    Damaged wiring or broken wire

    Part replacement

    A wire in the harness leading to the DSI board may be broken, chafed, or burned through, interrupting the power circuit entirely. Visual inspection along the full length of the harness and continuity testing will confirm this.

  3. 03

    Blown fuse or failed thermal limiter

    Part replacement

    An inline fuse or thermal protection device in the circuit feeding the DSI board may have opened, blocking power from reaching the module. Check any fuses or limiters in the wiring path and test for continuity.

  4. 04

    Corroded or burned connector terminals

    Part replacement

    Heat and moisture can cause terminal corrosion or heat damage at the DSI board connector, creating high resistance or an open circuit. Terminals with discoloration, pitting, or carbon buildup should be cleaned or replaced.

  5. 05

    Failed DSI board

    Part replacement

    If voltage is confirmed present at the board's input terminals but there is still no LED activity, the DSI module itself has likely failed internally and requires replacement.

See the test procedure for each cause

Frequently asked questions about No LED

What does No LED mean on a Viking range?
No LED on a Viking range means the DSI (Direct Spark Ignition) module is receiving no power and shows no activity. The DSI board controls the electronic ignition system for the gas burners, so without power it cannot function. This condition points to a wiring or power supply issue upstream of the board rather than a fault within the board itself. The first step is to inspect the wiring and connectors leading to the DSI module.
Can I fix the No LED condition on my Viking range myself?
Checking for a loose or disconnected wiring harness connector is something a careful DIYer can attempt after disconnecting power to the range. However, tracing wiring faults, testing for voltage with a multimeter, and replacing components like fuses, wiring harnesses, or the DSI board requires comfort with electrical diagnostics. If you are not experienced with appliance electrical systems, a qualified technician should perform the inspection.
Is it safe to use my Viking range when the No LED condition is present?
With the DSI board receiving no power, the electronic ignition system is non-functional. The burners cannot be sparked automatically. You should not attempt to manually light burners with a match or lighter as a workaround while an electrical fault is present, and the range should not be used until the wiring issue is diagnosed and repaired.
How much does it cost to repair the No LED condition on a Viking range?
Repair costs vary depending on the cause. If the issue is simply a loose connector, the cost is limited to a service call fee, typically in the range of $75 to $150. Wiring repairs or fuse replacements add parts costs on top of labor. If the DSI board itself needs replacement, parts and labor combined can range from $200 to $450 or more depending on the specific model and service rates in your area.
Will resetting my Viking range clear the No LED condition?
No, resetting the range will not resolve this condition. The No LED state is caused by a physical lack of power reaching the DSI board, not a software or control fault that can be cleared by a reset. The underlying wiring issue must be found and corrected before the module will power on and the ignition system will operate normally.

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