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Error code reference

Viking Cooktop Error Code 10

Wrong terminal connected

Viking codesViking cooktop codes

Wrong terminal connected – secondary voltage of the power supply above 400 Volts.

First step from the service manual

Check the power supply.

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

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What 10 means on a Viking cooktop

Error code 10 on a Viking cooktop indicates that the secondary voltage of the power supply is reading above 400 volts, and the system has detected a wrong terminal connection. This is a power supply configuration fault, not a component failure in the cooking surface itself. Viking induction and electric cooktops are engineered to operate within a specific voltage range, and the control board continuously monitors incoming power. When secondary voltage exceeds the 400-volt threshold, the system triggers this fault to protect internal components from overvoltage damage.

The most likely root cause is an incorrect wiring connection at the power supply terminals, either during initial installation or after a service procedure. If the line and neutral conductors are connected to the wrong terminals, or if a 240-volt circuit is miswired in a way that presents elevated voltage to the secondary side of the power supply board, the cooktop will register this error. This can also occur if the unit is connected to a power source with an incompatible voltage rating, such as a commercial or three-phase supply in a residential application.

The first diagnostic step is to check the power supply, which means verifying the incoming line voltage at the terminal block and confirming that all connections match the wiring diagram for this specific unit. A true RMS voltmeter should be used to measure secondary voltage accurately. If wiring is confirmed correct and voltage still reads above 400 volts, the power supply board itself may require evaluation.

Source: manufacturer service documentation.

Common causes of 10

  1. 01

    Incorrect terminal wiring at installation

    Wiring / connection

    The most frequent cause is connecting the line, neutral, or ground conductors to the wrong terminals on the cooktop or junction box. Reviewing the wiring diagram and confirming each connection matches the specified terminal is the first step.

  2. 02

    Incompatible power supply voltage

    Wiring / connection

    If the cooktop is connected to a circuit supplying voltage above the rated threshold, such as a commercial or three-phase line, the secondary voltage will exceed 400 volts. The incoming voltage must be measured and confirmed to match the unit's requirements.

  3. 03

    Miswiring after a prior service or repair

    Wiring / connection

    If the cooktop was previously serviced and wiring was disturbed, terminals may have been reconnected incorrectly. Inspect all power supply connections and compare them against the wiring diagram to identify any discrepancies.

  4. 04

    Faulty power supply board

    Part replacement

    If all external wiring is confirmed correct but the error persists, the power supply board may be misreading or generating incorrect secondary voltage. In this case the board would need to be tested and potentially replaced.

See the test procedure for each cause

Frequently asked questions about 10

What does 10 mean on a Viking cooktop?
Error code 10 on a Viking cooktop means the system has detected that the secondary voltage of the power supply is above 400 volts, which is outside the safe operating range. The code also indicates that a wrong terminal may be connected. This is a power configuration fault that requires inspection of the electrical supply and wiring before the unit is operated.
Can I fix error code 10 on my Viking cooktop myself?
Resolving this error requires working directly with the cooktop's electrical wiring and measuring live voltages, which presents a serious shock hazard. A qualified electrician or appliance technician should inspect the terminal connections and verify the incoming supply voltage. If you are comfortable with electrical diagnostics and have the proper tools, you can begin by shutting off the circuit and visually verifying each wiring connection against the unit's wiring diagram.
Is it safe to use my Viking cooktop when error code 10 is displayed?
No. Error code 10 indicates an overvoltage condition that could damage the cooktop's internal electronics and presents a potential safety risk. The cooktop should not be used until the wiring has been inspected and the power supply voltage has been confirmed to be within the correct range. Continued operation under this fault could cause permanent damage to the control board or power supply board.
Will resetting my Viking cooktop clear error code 10?
Resetting the cooktop by cycling power will not resolve error code 10 if the underlying cause, incorrect wiring or overvoltage supply, has not been corrected. The code will return as soon as the unit powers on and the control board detects the abnormal secondary voltage again. The root cause must be identified and corrected before the error will clear permanently.
How much does it cost to repair a Viking cooktop showing error code 10?
If the issue is a wiring correction with no parts needed, repair costs are typically in the range of $75 to $200 for a service call and labor. If the power supply board has been damaged by the overvoltage condition and requires replacement, total repair costs including parts and labor can range from $250 to $600 or more depending on the specific model and part availability. An accurate estimate requires a technician to diagnose whether components were damaged.

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