The XPARTCO DA47-00243K is an aftermarket replacement defrost bi-metal thermostat compatible with select Samsung French door and bottom freezer refrigerators. This thermostat is a critical component in the automatic defrost system, functioning as a thermal safety device that monitors the temperature of the evaporator coils during the defrost cycle.
When the evaporator reaches the preset maximum temperature of 140°F (60°C), the bi-metal thermostat opens the circuit and cuts power to the defrost heater — preventing overheating and damage to the evaporator. It resets and closes again at 104°F (40°C), allowing the next defrost cycle to begin normally. When the thermostat fails, it can cause excessive frost buildup on the evaporator coils, poor cooling performance, or a heater that won't shut off — all resulting in the refrigerator failing to maintain proper temperatures.
Quick Answer
The XPARTCO DA47-00243K Refrigerator Defrost Thermostat fixes refrigerators with excessive frost buildup, a freezer that is too cold while the fridge is too warm, a heater that won't shut off, or a refrigerator that stops cooling. It is compatible with select Samsung French door and bottom freezer refrigerators and opens at 140°F to protect the evaporator from overheating.
Common Problems This Part Fixes
Excessive frost or ice buildup on evaporator coils
Freezer too cold while refrigerator section is too warm
Defrost heater not shutting off after defrost cycle
Refrigerator not cooling or maintaining temperature
Food spoiling faster than normal
Unusual humming or running sounds from the back of the fridge
Replaces Part Numbers
This thermostat directly replaces the following OEM and cross-reference part numbers:
If your part number is not listed above, contact our support team before ordering and we will verify compatibility.
Compatibility
This defrost thermostat is compatible with select refrigerators from the following brands:
Samsung French door refrigerators
Samsung bottom freezer refrigerators
Always verify your appliance model number before ordering. Contact our support team if you're unsure.
Key Features
Bi-metal thermal safety device — opens at 140°F (60°C) to cut power to the defrost heater and prevent evaporator overheating
Resets automatically at 104°F (40°C) — allowing the next defrost cycle to begin normally
Aftermarket replacement built to OEM-equivalent quality standards
2-terminal design — direct drop-in replacement, no modification required
Restores proper frost-free operation and refrigerator cooling performance
DIY-friendly repair — installs with basic hand tools in 30–45 minutes
Budget-friendly alternative to OEM at a lower cost without sacrificing performance
Product Specifications
Part Number
DA47-00243K
Part Type
Defrost Bi-Metal Thermostat
Condition
Aftermarket Replacement
Application
Refrigerator Defrost System
Open Temperature
140°F (60°C)
Close Temperature
104°F (40°C)
Terminals
2
Compatible Brands
Samsung
Installation Notes
⚠️ Safety First — Unplug Refrigerator Before Starting Unplug the refrigerator from the power source before beginning any repair. Safely remove and store any food that could deteriorate while the power is off. Wear work gloves to protect your hands. Access the evaporator coils by removing the rear panel inside the freezer compartment. Disconnect the wiring harness from the old thermostat and clip the new DA47-00243K thermostat onto the evaporator coil in the same position. Reconnect the wiring harness and reassemble the freezer panel. Allow 24 hours for the refrigerator to return to normal operating temperature. Consult your refrigerator's service manual for model-specific instructions.
Frequently Asked Questions
Will the DA47-00243K fit my Samsung refrigerator?
This thermostat is compatible with select Samsung French door and bottom freezer refrigerators. Use the model search above to verify your model, or contact our support team before ordering.
What does a defrost thermostat do?
The defrost bi-metal thermostat monitors the temperature of the evaporator coils during the defrost cycle. It opens the circuit and cuts power to the defrost heater when the evaporator reaches 140°F (60°C), preventing overheating. It automatically resets and closes again at 104°F (40°C) to allow the next cycle.
What are signs that my defrost thermostat needs replacement?
Common signs include: excessive frost or ice buildup on the evaporator coils, the freezer running too cold while the refrigerator section is too warm, the defrost heater failing to shut off, or the refrigerator not maintaining proper temperatures and food spoiling faster than normal.
Is this an OEM or aftermarket part?
This is an aftermarket replacement part built to OEM-equivalent quality standards. It is not a genuine Samsung OEM part, but is designed to deliver reliable, long-lasting performance at a more affordable price point.
At what temperatures does the DA47-00243K open and close?
The thermostat opens (cuts power to the heater) at 140°F (60°C) and closes (resets) at 104°F (40°C).
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Model Compatibility
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⚠️ This is a partial compatibility list. Always verify your appliance model number before ordering. Contact our support team if you’re unsure.
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