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Wine Guardian Defrost Sensor 39H0040-02

Wine Guardian  |  SKU: 39H0040-02

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Controls & Switches

Freeze-Protection Sensor for Units Running the Current Remote Interface

The Wine Guardian Defrost Sensor, part number 39H0040-02, is the genuine defrost sensor that Wine Guardian states is used in all Wine Guardian units with its current remote interface controller, and that can be added to a unit for freeze protection after purchase.

Two different readers land on this part. One is replacing a sensor that a technician has already identified. The other is adding freeze protection to a unit that was not built with it. Wine Guardian publishes the part for both, which is unusual for a control component and worth knowing before you order.

As an authorized Wine Guardian dealer we supply genuine Wine Guardian parts. We do not publish diagnostic or fitting procedure for components inside a refrigeration unit: that work belongs to a licensed HVAC professional or qualified contractor following official Wine Guardian documentation.

Specifications

What Wine Guardian Publishes for Sensor 39H0040-02

Wine Guardian publishes a part number, a description, a control-generation fitment statement and one note about adding the sensor after purchase. It lists no associated documents for the part.

Part Number39H0040-02
TypeDefrost sensor
Manufacturer Fitment StatementUsed in all Wine Guardian units with the current remote interface controller
Published UseCan be added to a unit for freeze protection after purchase
Manufacturer DocumentationWine Guardian lists no associated documents for this part
Compatibility

Which Wine Guardian Units Take the 39H0040-02 Sensor

Wine Guardian keys this sensor to the control generation rather than to a model list: it is used in all Wine Guardian units with its current remote interface controller. The question to answer before ordering is therefore which interface your unit runs, not which cooling configuration it is.

Whether the unit is a ducted, ducted split, ductless split or ceiling-mount or through-the-wall system, the deciding factor is the interface generation. The interface Wine Guardian currently lists in its own catalog is the Remote Interface Controller 91H0105-01, and the defrost input that this sensor feeds is one of the settings that interface exposes, with enable and disable control and its own cut-in and cut-out set points.

  • Wine Guardian units running the current remote interface controller
  • Keyed to the control generation, not to the cooling configuration
  • Can be added after purchase for freeze protection

Because Wine Guardian publishes a family statement rather than a list, read the model and serial number from the data plate on your unit and check them against the documentation for your model on our Wine Guardian manuals and spec sheets page. Send them to us and our team will confirm the part number, or ask Wine Guardian's parts department to identify the unit from the serial number.

Adding One Later

Fitting Freeze Protection to a Unit That Did Not Have It

Wine Guardian states that this sensor can be added to a unit for freeze protection after purchase, so it is not restricted to like-for-like replacement. That is a genuine retrofit option rather than an inference from the part description.

Whether the addition suits your unit and your installation, and how it is carried out, is for a licensed HVAC professional or qualified contractor to determine from official Wine Guardian documentation. Other control-circuit parts stocked here include the Control Board MCB 39H0043-00 and the Fan Cycle Switch 32H0026-00, each with its own separate fitment statement.

Related Parts

Control Parts Often Ordered Alongside This Sensor

The parts most often confirmed alongside this sensor are the Control Board MCB 39H0043-00, the Fan Cycle Switch 32H0026-00 and the Remote Interface Controller 91H0105-01 that exposes the defrost input. Each carries its own separate fitment statement.

Looking at a replacement unit rather than a repair? Compare the current Wine Guardian wine cellar cooling systems range.

The rest of the catalog is in Wine Guardian parts and accessories.

FAQ

Frequently Asked Questions About the Wine Guardian Defrost Sensor

Which Wine Guardian units use the 39H0040-02 defrost sensor?
Wine Guardian states it is used in all Wine Guardian units with its current remote interface controller. The deciding factor is the control generation on the unit rather than the cooling configuration.
Can a defrost sensor be added to a unit that was not built with one?
Wine Guardian states the sensor can be added to a unit for freeze protection after purchase. Whether that suits your unit should be confirmed by a licensed HVAC professional or qualified contractor.
What does the defrost sensor do on a Wine Guardian unit?
It supplies the defrost input that the Wine Guardian remote interface uses. The interface exposes a setting to enable or disable that input, along with defrost cut-in and cut-out set points.
How do I confirm 39H0040-02 is the right part number for my unit?
Read the model and serial number from the data plate on the unit and check them against the documentation for your model. Wine Guardian lists no associated documents for the part itself, so the unit manual is the reference.
Does fitting a defrost sensor need a technician?
We do not publish a fitting procedure for it. Work inside a refrigeration unit should be carried out by a licensed HVAC professional or qualified contractor following official Wine Guardian documentation.

Confirm the Sensor Against Your Unit

Send the model and serial number from your unit's data plate and our team will confirm the Wine Guardian part number before you order. Diagnosis and fitting should be handled by a licensed HVAC professional or qualified contractor working from official Wine Guardian documentation.

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