Whirlpool w10860146 Defrost Bi-metal Thermostat

Product Description

The WHIRLPOOL w10860146 is a defrost bi-metal thermostat designed as an OEM-style replacement for refrigerator defrost systems. This component monitors evaporator coil temperature and opens the defrost heater circuit once the coil reaches its cut-out temperature, preventing ice over-accumulation on the evaporator. When the original thermostat fails, frost buildup on the evaporator restricts airflow and causes the refrigerator compartment to warm. The w10860146 restores proper defrost cycle operation. Installation is typically performed by appliance repair technicians during routine defrost system diagnostics.

This thermostat fits within the defrost circuit of residential refrigerators and freezer compartments where a bi-metal thermal cutout is required. It is suited for service calls where the defrost system has failed due to a faulty thermostat rather than a failed heater or defrost timer. Technicians typically encounter this part when diagnosing excessive frost on the evaporator coil paired with a functioning defrost heater and timer or control board.

Key Features

• Bi-metal construction opens the heater circuit at the rated cut-out temperature to protect the evaporator
• OEM-style replacement designed to match original fit and function
• Direct swap for the failed original thermostat with no modification required
• Suitable for residential refrigerator defrost system repair and maintenance

Compatibility

Designed as an OEM-style replacement defrost bi-metal thermostat for compatible residential refrigerator models. Verify the part number against the appliance model and service manual before installation.

Installation Notes

Disconnect power to the refrigerator at the outlet or breaker before accessing the evaporator compartment. A licensed appliance technician should remove the evaporator panel, locate the existing bi-metal thermostat on the evaporator coil, and transfer wiring connections to the replacement unit. Do not bypass or jumper the thermostat during testing without following the manufacturer service procedure, as this can damage the heater circuit.

Technical Specifications

• Part Type: Defrost Bi-Metal Thermostat

Standard Information

• Brand: WHIRLPOOL
• Manufacturer Part Number: w10860146