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Error code reference

Viking Range Error Code 10

Wrong terminal connected

Viking codesViking range codes

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

First step from the service manual

Check the supply power.

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 range

Error code 10 on a Viking range indicates that the secondary voltage of the power supply is reading above 400 volts, triggered by a wrong terminal connection. This error is specific to the power supply circuit and signals that the range is receiving voltage at a level beyond its rated operating range. The control board monitors incoming secondary voltage and throws this fault when it detects an overvoltage condition that exceeds the acceptable threshold, which is a protective mechanism designed to prevent damage to sensitive electronic components.

The most common cause of this error is an incorrect wiring connection at the terminal block, where the supply lines have been landed on the wrong terminals. This can occur during installation, after a repair, or following a utility-side service interruption where reconnection was performed incorrectly. In some cases, a change in the incoming power configuration from the utility, such as a neutral shift or a line-to-line connection being applied where a line-to-neutral connection is expected, can push the secondary voltage above the 400-volt threshold.

The first diagnostic step is to check the supply power at the terminal block with a calibrated multimeter, verifying that each terminal is receiving the correct voltage relative to neutral and ground. Wiring should be compared against the wiring diagram located inside the unit to confirm proper terminal placement. Do not operate the range until the wiring issue is resolved, as sustained overvoltage can permanently damage the control board and other electronic components.

Source: manufacturer service documentation.

Common causes of 10

  1. 01

    Incorrect terminal block wiring

    Wiring / connection

    Supply wires landed on the wrong terminals during installation or a prior repair can cause the secondary voltage to read above 400 volts. Inspect the terminal block and compare each connection against the wiring diagram inside the range.

  2. 02

    Line-to-line connection instead of line-to-neutral

    Wiring / connection

    If the incoming power is wired so that two hot legs are connected where a hot and neutral are expected, the resulting voltage will be significantly higher than the rated operating voltage. This is confirmed by measuring voltage between the suspect terminals with a multimeter.

  3. 03

    Utility power supply issue or neutral loss

    Wiring / connection

    A lost or floating neutral on the utility side can cause voltage imbalances that push the measured secondary voltage above 400 volts at the range terminals. Contact the utility provider if terminal wiring is confirmed correct and the overvoltage originates from the supply panel.

  4. 04

    Damaged or miswired power cord

    Part replacement

    A power cord with reversed or incorrectly terminated conductors can deliver voltage to the wrong terminals on the range. Inspect the cord connections at both the plug end and the terminal block for proper conductor placement.

  5. 05

    Faulty control board misreading voltage

    Part replacement

    In rare cases, the control board's voltage sensing circuit may report an overvoltage condition inaccurately due to a component failure on the board itself. This should only be considered after supply wiring and incoming voltage have been confirmed correct.

See the test procedure for each cause

Frequently asked questions about 10

What does 10 mean on a Viking range?
Error code 10 on a Viking range means the secondary voltage of the power supply is reading above 400 volts, which the control board has flagged as an overvoltage fault. This is typically caused by a wire connected to the wrong terminal on the range's terminal block. The range will not operate normally until the wiring issue is identified and corrected.
How do I fix error code 10 on my Viking range?
Start by turning off power to the range at the circuit breaker and inspecting the terminal block wiring against the wiring diagram located inside the unit. Use a calibrated multimeter to measure the secondary voltage at the terminal block and confirm each conductor is landed on the correct terminal. If the wiring appears correct but the overvoltage persists, the issue may originate from the household supply panel or the utility service, and an electrician should be consulted.
Is it safe to use my Viking range when error code 10 is showing?
No, you should not operate the range while error code 10 is active. A secondary voltage above 400 volts indicates the unit is receiving more electrical voltage than it is rated to handle, which can cause permanent damage to the control board and other electronics. Disconnect the range from power until the wiring issue is resolved.
Will resetting my Viking range clear error code 10?
Resetting the range by cycling the circuit breaker will not permanently clear error code 10 if the underlying wiring issue is still present. The fault will return as soon as the range powers back on and the control board detects the overvoltage condition again. The root cause, an incorrect terminal connection or an out-of-spec supply voltage, must be corrected first.
How much will it cost to repair error code 10 on a Viking range?
If the fix is simply correcting a terminal block wiring connection, the cost is typically limited to a service call fee, which can range from $75 to $150 depending on your location. If the overvoltage caused damage to the control board, replacement board costs can range from $200 to $600 or more for parts alone, plus labor. Having an electrician check the household supply adds additional cost if the problem originates upstream from the range.

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