Frigidaire / Electrolux Refrigerator Defrost Thermostat 240386402, Replaces 240386403

Genuine OEM refrigerator defrost thermostat, identified by Parts Dr as an L47-22F defrost thermostat. It controls the defrost-heater circuit and opens at the defrost termination temperature to help prevent evaporator overheating and frost buildup.

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✅ Cross Reference Information

Common Symptoms

• Persistent frost or ice buildup on the evaporator or freezer rear panel
• Refrigerator not cooling properly while the evaporator becomes heavily iced
• Defrost cycle not activating when the thermostat has failed open
• Refrigerator running longer than usual because restricted airflow reduces cooling efficiency

Check Before Replacing

• With the refrigerator unplugged, visually inspect the thermostat body, wire leads, terminals, and connectors for cracking, burns, corrosion, or loose connections.
• Inspect the evaporator area for abnormal frost accumulation or an ice-covered panel that could indicate a defrost-system problem.
• If the appliance service procedure permits, test thermostat continuity with a multimeter while the component is at the appropriate cold condition; compare the result with the appliance’s technical documentation.
• Check the defrost heater and associated wiring separately rather than assuming the thermostat is the only failed component.

Pro Tip

Part Details

Key Features

• Genuine OEM Frigidaire/Electrolux refrigerator defrost thermostat
• Defrost termination thermostat identified as L47-22F
• Temperature-controlled switch for the evaporator defrost-heater circuit
• Manufacturer part number 240386402
• Listed by Parts Town with approximate dimensions of 4.15 in. length, 2.45 in. width, and 1.15 in. height

Installation Notes

• Disconnect electrical power before servicing or installing the thermostat.
• Access may require removal of the freezer interior panel or evaporator cover; handle the evaporator, wiring, and terminals carefully.
• Install the replacement in the same location and orientation as the removed thermostat, and secure the electrical connections.
• Inspect the wiring and connectors before reassembly, then reinstall all panels before restoring power.

Verified Compatible Models

CFD26SDS0, CFD26WIS0, CFD26WIS1, CFD26WIS3, CFD26WIS4, CFD26WIS5, CFD26WIS6, CFD27SDPS0, CFD27WIPB2, CFD27WIPB3, CFD27WIPS2, CFD27WIPS3, CFD27WIPW2, CFD27WIPW3, CFD28SDS1

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.