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Error code reference

Sub-Zero Wine Storage Error Code 10 1 10

Zone 1 (upper wine) evaporator thermistor open circuit.

Sub-Zero codesSub-Zero wine storage codes

Zone 1 (upper wine) evaporator thermistor open circuit.

First step from the service manual

Check ohms and verify temperature readings.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What 10 1 10 means on a Sub-Zero wine storage

Error code 10 1 10 on a Sub-Zero wine storage unit indicates an open circuit condition in the Zone 1 evaporator thermistor. Zone 1 refers to the upper wine storage compartment. The evaporator thermistor is a temperature-sensing resistor mounted near the evaporator coil that continuously reports compartment temperature to the control board. An open circuit means the control board is receiving no valid signal from the thermistor, either because the sensor itself has failed or because the wiring circuit between the sensor and the board has been interrupted.

The first diagnostic step is to check the thermistor's resistance in ohms and compare the reading against the expected value for the measured ambient temperature. A functional thermistor will produce a resistance reading that corresponds to the actual temperature at the sensor location. An open circuit will typically produce an infinite or out-of-range resistance reading on a multimeter. Technicians should also verify that the temperature readings displayed on the unit match actual conditions, as a discrepancy can help isolate whether the fault is in the sensor or the wiring harness.

Common causes include a failed thermistor with an internally broken element, a damaged or disconnected wiring harness between the thermistor and the control board, or corrosion at connector terminals. Physical damage from ice buildup around the evaporator can also stress or break sensor leads over time. Because the control board cannot regulate Zone 1 cooling without a valid temperature signal, the unit may default to a fault state or run erratically until the open circuit is resolved.

Source: manufacturer service documentation.

Common causes of 10 1 10

  1. 01

    Failed evaporator thermistor

    Part replacement

    The thermistor element itself has broken internally, producing infinite resistance on a multimeter. This is the most common cause and requires measuring ohms at the sensor connector to confirm.

  2. 02

    Disconnected or damaged wiring harness

    Wiring / connection

    The wire harness connecting the Zone 1 thermistor to the control board may have come loose, been pinched, or suffered insulation damage. Visually inspect all connectors and wiring runs between the sensor and the board.

  3. 03

    Corroded or loose connector terminals

    Wiring / connection

    Moisture in the evaporator area can cause corrosion at the thermistor connector pins, increasing resistance to the point of an apparent open circuit. Clean or replace the connector and recheck resistance.

  4. 04

    Ice buildup stressing sensor leads

    Part replacement

    Excessive frost or ice accumulation around the Zone 1 evaporator can physically stress the thermistor leads over time, eventually causing a break. Check for abnormal ice buildup and address any defrost system issues alongside the sensor repair.

  5. 05

    Faulty control board

    Part replacement

    If the thermistor and all wiring check out within normal resistance values, the control board input circuit may have failed and is misreporting an open circuit condition. This is the least likely cause and should be diagnosed after all other components are verified.

See the test procedure for each cause

Frequently asked questions about 10 1 10

What does 10 1 10 mean on a Sub-Zero wine_storage?
Error code 10 1 10 indicates an open circuit in the Zone 1 evaporator thermistor, which is the temperature sensor for the upper wine storage compartment. The control board is not receiving a valid resistance signal from that sensor. This prevents the unit from accurately monitoring and controlling the upper zone temperature. A technician will need to measure the thermistor resistance and inspect the associated wiring to locate the fault.
Can I fix error code 10 1 10 myself?
A knowledgeable DIYer can inspect the wiring harness and connector terminals for visible damage or disconnection, and can use a multimeter to check the thermistor's resistance. If the thermistor reads open or infinite resistance, replacing the sensor is a straightforward repair involving disconnecting the old sensor and connecting a correct replacement. However, accessing the evaporator area may require removing interior panels, and if the control board is suspected, professional diagnosis is recommended.
Is it safe to keep using my Sub-Zero wine storage with error code 10 1 10 active?
Continued use is not recommended without addressing the fault. Without a functioning Zone 1 thermistor, the control board cannot reliably regulate cooling in the upper compartment, which could result in temperature swings that may compromise stored wine. It is best to resolve the error promptly to protect both the wine and the unit.
How much does it cost to repair error code 10 1 10 on a Sub-Zero wine storage?
If only the thermistor needs replacement, parts and labor typically range from around $100 to $300 depending on your location and service provider. If the wiring harness requires repair or replacement, costs can range from $150 to $400. A control board replacement, if needed, is significantly more expensive and can range from $400 to $800 or more including labor.
Will resetting my Sub-Zero wine storage clear error code 10 1 10?
A power reset may temporarily clear the displayed error, but the code will return if the underlying open circuit condition in the Zone 1 thermistor or its wiring has not been corrected. Resetting the unit does not repair a failed sensor or damaged wiring. The fault must be diagnosed and the defective component repaired or replaced to permanently clear the code.

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