ML45 - Genuine OEM Universal Refrigerator Defrost Thermostat, 45°

ML45 – Genuine OEM Universal Refrigerator Defrost Thermostat, 45°

The ML45 Genuine OEM Universal Refrigerator Defrost Thermostat, 45° is a refrigerator defrost system component designed to help regulate the automatic defrost cycle in refrigerators and freezers. This thermostat opens at approximately 45°F (7.2°C) and closes at approximately 25°F (-3.9°C) to protect the evaporator from overheating during defrost operation while ensuring proper frost removal. It is commonly used as a universal replacement in compatible refrigerator applications and is available from Appliance Kingdom with fast Canada-wide shipping. This component frequently resolves cooling issues caused by failed defrost control operation, excessive frost accumulation, and airflow restrictions.

What Does the Defrost Thermostat Do?

The defrost thermostat is a safety and control device mounted near the evaporator coil. Its primary function is to monitor evaporator temperature and interrupt power to the defrost heater once a predetermined temperature is reached.

Proper thermostat operation is essential because it:

• Prevents overheating during defrost cycles
• Helps remove frost and ice from the evaporator coil
• Maintains proper airflow throughout the refrigerator
• Supports efficient cooling performance
• Protects defrost system components from excessive heat

The ML45 thermostat is designed with a moisture-resistant sealed construction and operates with an open temperature of 45°F and a close temperature of 25°F.

When a defrost thermostat fails, frost can accumulate on the evaporator coil, reducing airflow and causing cooling problems throughout the refrigerator.

Common Symptoms Indicating Replacement

A defective refrigerator defrost thermostat may cause:

• Excessive frost or ice buildup on the evaporator coil
• Refrigerator section becoming too warm
• Freezer maintaining temperature while the refrigerator compartment warms
• Reduced airflow from interior vents
• Refrigerator running continuously
• Poor cooling performance
• Inconsistent temperatures
• Defrost heater not operating correctly
• Recurring frost accumulation after manual defrosting

If diagnostic testing confirms a failed defrost thermostat, replacing the component often restores proper defrost operation and cooling performance.

Compatibility Guidance

This part is intended for use in compatible:

• Refrigerators
• Refrigerator-freezer combinations
• Freezer systems utilizing a defrost thermostat

Before ordering:

• Verify your appliance model number.
• Confirm that ML45 is specified for your appliance.
• Contact Appliance Kingdom if compatibility assistance is required.

Proper model verification helps ensure correct installation and performance.

Replaces Part Numbers

Verified replacement references include:

• WR50X45
• AP2071240
• PS303514
• AP3674272
• ERML45
• SL45

These replacement references have been identified by appliance parts suppliers and replacement part distributors.

Key Features & Benefits

• Genuine OEM-quality universal refrigerator defrost thermostat
• Opens at 45°F and closes at 25°F
• Designed for reliable defrost system operation
• Moisture-resistant sealed construction
• Helps prevent evaporator overheating
• Supports proper frost removal and airflow
• Meets appliance industry performance standards
• Suitable for homeowners, landlords, maintenance professionals, and appliance technicians
• Designed for dependable long-term operation

Installation Overview

Installation generally involves accessing the evaporator compartment and replacing the existing thermostat attached to the evaporator tubing.

Installation difficulty is typically considered moderate.

Experienced DIY users may be able to perform the repair safely with appropriate tools and electrical knowledge. Because the repair involves electrical wiring and refrigeration system components, professional installation is recommended when diagnosis or wiring procedures are uncertain.

Always disconnect power before servicing any appliance.

Canada-Wide Availability & Trusted Canadian Supplier

Appliance Kingdom supplies genuine OEM and high-quality appliance replacement parts to customers throughout Canada. Orders are shipped from Canada, helping reduce delivery times while providing reliable support for homeowners, property managers, landlords, and appliance repair professionals nationwide.

Buyer Confidence & Quality Assurance

When purchasing the ML45 Universal Refrigerator Defrost Thermostat from Appliance Kingdom, customers benefit from:

• Quality-tested replacement components
• Reliable temperature-control performance
• Trusted appliance repair solutions
• Canadian inventory and support
• Assistance with compatibility verification before purchase