Replacement Traulsen Blue Coil 337-60406-02, Green Cabinet 334-60405-02 & Yellow Liquid Line 334-60407-02 Temperature Probes, 12 Month Warranty & USA Support

Restore dependable temperature monitoring throughout your compatible Traulsen commercial refrigeration system with the Wholesale Sensors Replacement Temperature Probe Set for Traulsen Blue Coil 337-60406-02, Green Cabinet 334-60405-02, and Yellow Liquid Line 334-60407-02, backed by a strong 12-Month Warranty and responsive USA-based product support.

This replacement set combines three important color-coded temperature probes used in compatible Traulsen commercial refrigerators and freezers. Instead of treating every refrigeration temperature sensor as the same component, this set provides sensors intended for three distinct monitoring positions: the Blue Coil Temperature Sensor, Green Cabinet Temperature Sensor, and Yellow Liquid Line Temperature Sensor.

The first sensor replaces Traulsen 337-60406-02, identified by its blue color and used as a coil temperature sensor in compatible refrigeration equipment. This probe monitors temperature associated with the refrigeration coil or evaporator area. Accurate coil temperature information can be important for proper refrigeration and defrost control because the electronic control system needs reliable feedback about operating conditions around the evaporator.

The second sensor replaces Traulsen 334-60405-02, the green cabinet temperature sensor. This probe monitors the temperature inside the refrigerated cabinet and supplies that information to the electronic control system. Cabinet temperature is one of the primary measurements used to determine whether the refrigeration system needs to cool and whether the storage compartment is maintaining its intended temperature.

Verified related references for the green cabinet sensor include 337-60069-02, 337-60405-02, and 60069-02. These numbers may appear in older parts documentation or supplier catalogs. Always use the original equipment information and complete model number when confirming the correct replacement.

The third sensor replaces Traulsen 334-60407-02, identified as the yellow liquid line temperature sensor. Parts references describe this component as a 74-inch yellow liquid line sensor, while some commercial refrigeration catalogs also refer to it as a discharge line temperature sensor. Related references include 337-60072-02, 337-60407-02, 337-60407-2, and 60072-00.

Together, these three sensors provide temperature feedback from separate locations within compatible Traulsen refrigeration systems. Keeping each sensor in its correct location is important because the electronic control expects temperature information corresponding to a specific part of the refrigeration system.

This Wholesale Sensors set is engineered as a perfect OEM-style replacement designed to meet or exceed OEM specifications for compatible applications. Each probe is designed to provide the electrical response needed by compatible Traulsen controls while maintaining the color identification used to distinguish the different sensing positions.

Compatibility includes select Traulsen commercial refrigerators and freezers, including equipment within the company’s G-Series, R-Series, and A-Series product families. Applications can include reach-in, pass-thru, roll-in, and other commercial refrigeration configurations.

The yellow 334-60407-02 sensor, for example, is documented in models including RHT332NUT-FHG, RHT232WUT-HHG, and AZ132WP-X0048, along with numerous additional Traulsen configurations. Sensor applications also appear throughout various AHT, ADH, RHT, and related model families.

Because Traulsen has produced many equipment configurations and revisions, customers should not select these probes based solely on cabinet appearance or general product family. Always check the complete model number, serial number, original sensor part number, sensor color, wiring, connector, and installation position before ordering.

The three colors are especially useful during service because they help technicians distinguish the different temperature-monitoring circuits. The blue sensor is intended for the coil position, green for cabinet temperature, and yellow for the liquid line position in compatible applications.

Do not interchange the sensors solely because their connectors or physical dimensions appear similar. Each sensor position serves a specific purpose in the refrigeration control strategy. Installing the wrong sensor in a particular location can provide misleading temperature information and interfere with proper equipment operation.

During normal refrigeration operation, the cabinet temperature probe provides information about storage-compartment conditions. The controller can use this feedback when determining when refrigeration is required. Accurate cabinet temperature monitoring supports consistent food-storage conditions and helps the equipment maintain its programmed operating range.

The coil sensor monitors temperature around the refrigeration coil. Depending on the equipment’s control design, coil temperature information can be used during refrigeration and defrost operation. If this sensor provides incorrect feedback, the equipment may have difficulty determining actual coil conditions.

The liquid line sensor provides another refrigeration-system temperature measurement. This temperature information allows compatible controls to monitor conditions at the location specified by the equipment design.

When one or more temperature probes deteriorate, the control may receive incorrect, intermittent, open, or shorted temperature information. The symptoms depend on which sensor circuit is affected and how the particular Traulsen controller uses that input.

Potential symptoms can include incorrect cabinet temperature readings, inconsistent cooling, excessive evaporator frost, unusual defrost behavior, abnormal compressor cycling, temperature fluctuations, extended refrigeration operation, or temperature-related controller faults.

These symptoms do not automatically mean the temperature probes have failed. Commercial refrigeration systems contain numerous components that can cause similar operating problems. Proper diagnosis should include checking airflow, evaporator and condenser fans, condenser cleanliness, evaporator frost condition, door gaskets, defrost components, refrigerant-system operation, wiring, connectors, and electronic controls.

Before replacing a sensor, inspect the existing probe and wiring for physical damage. Look for cut or pinched wires, damaged insulation, loose terminals, corrosion, moisture intrusion, overheated connections, broken conductors, or damaged sensing elements. A wiring or connector problem can create an inaccurate temperature signal even when the thermistor itself is functional.

Qualified technicians can also evaluate temperature probes electrically. Sensor resistance should respond predictably to temperature changes according to the specification expected by the equipment controller. Measurements should be compared with the correct service information for the specific sensor and Traulsen model.

Installation should begin by disconnecting electrical power to the refrigeration equipment according to applicable service procedures. Commercial refrigeration equipment can contain hazardous voltage, moving fans, hot components, and pressurized refrigeration systems, so service should be performed by qualified personnel when appropriate.

Before removing the existing sensors, document each sensor’s color, location, mounting position, connector orientation, and wire routing. Replacing one probe at a time can help prevent accidental mixing of the blue, green, and yellow sensor circuits.

Install the 337-60406-02 replacement in the designated blue coil sensor position, the 334-60405-02 replacement in the green cabinet sensor position, and the 334-60407-02 replacement in the yellow liquid line sensor position where applicable. Secure each probe and route its wiring according to the original equipment configuration.

After installation, restore power and allow the refrigeration equipment to complete normal operating cycles. Compare displayed cabinet temperature with an accurate independent thermometer when appropriate. Observe cooling and defrost operation to confirm that the system is responding normally.

Commercial refrigeration equipment does not use automotive OBD-II diagnostic trouble codes, so automotive codes do not apply to these Traulsen probes. Traulsen electronic controllers may use equipment-specific alarms or diagnostic indications. The exact meaning of a displayed fault depends on the controller and equipment model, so consult the appropriate Traulsen service documentation before replacing components based solely on an error indication.

Each Wholesale Sensors replacement probe is manufactured with a responsive temperature-sensing element, durable insulated wiring, and application-specific construction for commercial refrigeration environments. Every sensor is rigorously tested for temperature response, electrical continuity, resistance consistency, connection integrity, and reliability.

Wholesale Sensors specializes in aftermarket replacement sensing components for commercial refrigeration, restaurant equipment, HVAC systems, appliances, pool and spa equipment, automotive applications, RV equipment, and industrial systems. Our focus is providing dependable replacement components with knowledgeable customer assistance.

Every Wholesale Sensors Replacement Traulsen Blue Coil 337-60406-02, Green Cabinet 334-60405-02, and Yellow Liquid Line 334-60407-02 Temperature Probe Set is backed by a strong 12-Month Warranty and responsive USA-based product support.

Before ordering, verify your Traulsen model and serial number and confirm that your equipment specifies these three sensor part numbers and color-coded locations. With confirmed compatibility, this three-sensor set provides a convenient solution for restoring reliable coil, cabinet, and liquid line temperature feedback in compatible Traulsen commercial refrigeration equipment.