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Error code reference

Thermador Cooktop Error Code E13

Vcc Lift-Off Error

Thermador codesThermador cooktop codes

Vcc Lift-Off Error - checked during active cook, 60 sec debounce, both ovens turned off.

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What E13 means on a Thermador cooktop

The E13 error code on a Thermador cooktop indicates a Vcc Lift-Off Error, which is a fault condition related to the supply voltage (Vcc) monitored by the cooktop's control board during an active cooking cycle. The term "lift-off" in this context refers to the control system detecting that the Vcc supply voltage has deviated outside of acceptable operating parameters while the unit is in use. Because this is a safety-critical fault, the system applies a 60-second debounce period before confirming the error, meaning the fault condition must persist for a full minute before the error is officially triggered and the cooktop shuts down.

When E13 is confirmed, the control board commands both ovens or cooking zones to turn off completely as a protective measure. This behavior is intentional to prevent cooking activity from continuing under potentially unstable power supply conditions. The Vcc rail is the regulated low-voltage supply used to power the control electronics, and an anomaly on this rail can point to issues in the power supply section of the main control board, unstable incoming line voltage, or poor connections in the power delivery path.

Common sources of this fault include a failing main control board where the internal voltage regulators are degrading, loose or corroded wiring harness connections that cause intermittent voltage drops, or fluctuations in the household power supply reaching the cooktop. Because the debounce period filters out momentary glitches, a confirmed E13 generally indicates a persistent underlying hardware issue rather than a one-time transient event.

Source: manufacturer service documentation.

Common causes of E13

  1. 01

    Failing main control board

    Part replacement

    The internal voltage regulators on the main control board can degrade over time, causing the Vcc supply rail to drop out of specification. This is a common root cause when the error appears repeatedly and no wiring faults are found.

  2. 02

    Loose or corroded wiring harness connections

    Wiring / connection

    Poor contact at connectors in the power delivery path to the control board can cause intermittent voltage drops long enough to trigger the 60-second debounce and confirm the fault. Inspect all harness connectors for corrosion, backed-out pins, or loose seating.

  3. 03

    Unstable household supply voltage

    Wiring / connection

    Fluctuations or sags in the incoming line voltage to the cooktop can stress the internal power supply and cause the Vcc rail to fall outside acceptable limits. Check the outlet or hardwire connection and test line voltage under load.

  4. 04

    Damaged power supply section on the control board

    Part replacement

    Physical damage, heat stress, or component failure in the power supply circuitry of the control board can prevent stable Vcc output. Visible burn marks, swollen capacitors, or discoloration on the board are indicators of this condition.

  5. 05

    Intermittent ground or neutral connection

    Wiring / connection

    A loose neutral or ground at the terminal block or junction box can cause the reference voltage for the control electronics to become unstable. Verify secure and correct connections at the cooktop's power terminal block.

See the test procedure for each cause

Frequently asked questions about E13

What does E13 mean on a Thermador cooktop?
E13 indicates a Vcc Lift-Off Error, meaning the cooktop's control board detected an abnormal condition on its internal low-voltage supply (Vcc) during an active cook cycle. The system uses a 60-second debounce period to confirm the fault is persistent rather than a momentary blip. Once confirmed, the control board shuts off both cooking zones or ovens as a safety precaution. This is a hardware-level power supply fault that typically requires physical inspection of wiring and control board components.
Can I reset the E13 error on my Thermador cooktop and keep using it?
You may be able to clear the error temporarily by cutting power to the cooktop at the breaker for several minutes and restoring it. However, because E13 is confirmed only after a sustained 60-second fault condition, a simple reset is unlikely to permanently resolve the issue if an underlying hardware problem exists. The error is likely to return during the next cooking session. A proper inspection of the wiring and control board should be performed before relying on the cooktop.
Is it safe to use my Thermador cooktop while the E13 error is active?
No. The E13 error is a protective shutdown triggered by an abnormal internal power supply condition, and the cooktop deliberately turns off cooking zones when it occurs. Attempting to bypass the error or continue cooking without addressing the fault is not recommended. The underlying cause should be diagnosed and corrected before returning the cooktop to regular use.
What does it cost to repair an E13 error on a Thermador cooktop?
Repair costs depend on the root cause. If the issue is a loose wiring connection, the cost may only involve a service call fee, typically in the range of $75 to $150. If the main control board needs replacement, parts and labor combined can range from $300 to $600 or more depending on the specific model. Getting a professional diagnosis before ordering parts is advisable to avoid unnecessary expenses.
What component is most likely to blame for the E13 error on a Thermador cooktop?
The main control board is the most frequently implicated component, particularly its internal voltage regulation circuitry that produces the Vcc supply. Wiring harness connections should also be thoroughly checked before replacing the board, since a loose or corroded connector can produce the same symptom at a much lower repair cost. Household supply voltage issues at the terminal block are a less common but valid secondary cause to rule out.

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