Westinghouse 626491R Defrost Sensor 34 Inches Heat Pump

Product Description

The WESTINGHOUSE 626491R is a defrost sensor designed for split system heat pumps. The sensor monitors outdoor coil temperature and signals the control board to initiate or terminate defrost cycles, preventing ice buildup that reduces system efficiency. At 34 inches in length, it reaches the coil mounting positions found in standard split system configurations. Licensed HVAC technicians install this sensor as a direct replacement during defrost system troubleshooting or scheduled maintenance on heat pump equipment.

The 626491R is specified for use on the T5BX split system heat pump. It is suited to residential split system heat pump applications where a failed or degraded defrost sensor is causing improper defrost cycle operation, such as short cycling, failure to defrost, or continuous defrost lockout. Technicians typically identify the need for this sensor during off-season startup checks or in response to ice accumulation on the outdoor coil during heating operation.

Key Features

• 34-inch lead length provides reach to coil mounting locations in split system outdoor units
• Designed to monitor outdoor coil temperature for accurate defrost cycle initiation and termination
• OEM-specified replacement for T5BX split system heat pump applications
• Direct replacement fit reduces diagnostic and installation time in the field

Compatibility

Specified for use on the WESTINGHOUSE T5BX split system heat pump.

Installation Notes

Defrost sensor replacement is performed by a licensed HVAC technician. Disconnect and lock out power to the outdoor unit at the disconnect box before beginning any service work. Secure the sensor to the coil per the original mounting method and route the lead wire away from sharp edges or moving components. Verify defrost cycle operation after installation by confirming the system enters and exits defrost mode within normal parameters for the equipment.

Technical Specifications

• Item Type: Defrost Sensor
• Lead Length: 34 inches
• Used On: Split System Heat Pump
• Compatible Model: T5BX

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 626491R