SL00301D – Universal Supco Refrigerator Thermal Fuse (Defrost Sensor)

SL00301D – Universal Supco Refrigerator Thermal Fuse (Defrost Sensor)

The SL00301D – Universal Supco Refrigerator Thermal Fuse is a high-quality replacement defrost sensor designed for use in refrigerators that rely on accurate temperature protection and defrost cycle control. This part is a widely used Supco universal replacement component, engineered to match OEM-style performance standards for dependable cooling system protection. Available through Appliance Kingdom in Canada, it ships nationwide with fast delivery for homeowners, landlords, and appliance repair technicians.

This thermal fuse is commonly used in refrigerator defrost systems and is designed to help prevent overheating while ensuring the appliance maintains proper cooling efficiency. It is frequently used as a replacement for multiple OEM defrost sensors in compatible refrigerator systems.

Function & Importance of the Thermal Fuse

The SL00301D thermal fuse (defrost sensor) plays a critical role in the refrigerator’s defrost system. It monitors temperature inside the evaporator area and helps regulate defrost cycles by protecting components from excessive heat.

When the refrigerator enters a defrost cycle, the fuse ensures that temperatures remain within a safe range. If overheating occurs, it helps interrupt the circuit to prevent damage to the evaporator, wiring, or surrounding components.

Using a correctly rated and properly functioning thermal fuse is essential because it directly impacts:

• Cooling stability
• Defrost cycle accuracy
• Compressor and system protection
• Overall refrigerator efficiency and safety

A degraded or failed thermal fuse can disrupt the entire cooling process.

Common Symptoms Indicating Replacement

A failing SL00301D thermal fuse or defrost sensor may cause the following refrigerator issues:

• Refrigerator or freezer not cooling properly
• Refrigerator running too warm or too cold
• Excess frost or ice buildup on evaporator coils
• Defrost cycle not activating or stopping correctly
• Compressor running continuously without proper cycling
• Cooling performance gradually declining over time
• Refrigerator appears powered but temperature remains unstable

Replacing a faulty thermal fuse often restores proper defrost operation and stabilizes cooling performance when the fuse is confirmed to be the cause.

Compatibility Guidance

This is a universal refrigerator defrost thermal fuse used across multiple refrigerator systems.

Before purchasing:

• Confirm your appliance requires a defrost thermal fuse of this type
• Match the exact part number SL00301D
• Verify compatibility using your refrigerator’s model number

Proper verification ensures correct fit and prevents unnecessary replacement errors.

Replaces Part Numbers (Verified)

• DA47-00301D
• AP4979370
• DA47-00432A
• 2031598
• PS4140643

Key Features & Benefits

• Universal Supco replacement thermal fuse / defrost sensor
• Designed for refrigerator defrost system protection
• Helps prevent overheating and cooling failures
• Restores proper defrost cycle operation
• Built to meet or exceed OEM performance standards
• Reliable and widely compatible replacement solution
• Suitable for homeowners, property managers, and technicians

Installation Overview

Installation is typically moderate difficulty, depending on refrigerator model design and access to the evaporator compartment.

• Requires access to internal refrigerator components
• Electrical connector handling may be required
• No water line disconnection typically needed

Professional installation is recommended if you are not experienced with refrigerator electrical components or internal panel removal.

Always disconnect power before servicing the appliance.

Canada-Wide Availability & Supplier Trust

Appliance Kingdom is a Canada-based appliance parts supplier serving customers nationwide. The SL00301D Supco Thermal Fuse is shipped from Canada with reliable delivery options, making it ideal for fast appliance repairs across residential and rental properties.

We support homeowners and appliance technicians with dependable OEM and universal replacement parts backed by trusted sourcing and service.

Buyer Confidence & Reassurance

When you choose SL00301D, you get:

• Trusted Supco universal replacement quality
• Verified compatibility across multiple OEM references
• Reliable refrigerator defrost system performance restoration
• Canada-wide shipping and support
• Confidence in correct part selection with expert assistance available