Westinghouse 624780R Ac Ambient Thermistor Sensor

Product Description

The WESTINGHOUSE 624780R is an ambient thermistor sensor designed for use in air conditioning systems. This component monitors ambient air temperature and sends a resistance-based signal to the system control board, allowing the unit to regulate operation based on real-time thermal conditions. Thermistor sensors are critical to system protection and efficiency, triggering defrost cycles, limiting compressor operation in extreme temperatures, and supporting fault detection routines. Installation is typically performed by a licensed HVAC technician as part of a diagnostic repair or scheduled maintenance procedure.

The 624780R is applied in air conditioning equipment where ambient temperature sensing is required for proper system control. The sensor mounts in the airstream and connects to the main control circuit. It is suited for residential and light commercial air conditioning applications where the original thermistor has failed, drifted out of calibration, or been physically damaged. Technicians replacing a faulty ambient sensor will find this part a direct fit for compatible WESTINGHOUSE air conditioning units.

Key Features

• Monitors ambient air temperature to support system control and protection logic
• Resistance-based output compatible with standard air conditioner control board inputs
• Designed as a replacement for failed or out-of-tolerance ambient thermistor sensors
• Suitable for residential and light commercial air conditioning systems

Compatibility

Designed as an OEM-style replacement ambient thermistor sensor for WESTINGHOUSE air conditioning equipment. No specific model numbers or system families were provided in the product data.

Installation Notes

Installation should be performed by a qualified HVAC technician. Disconnect and lock out all power to the air conditioning unit before removing the existing sensor or accessing control wiring. Handle the thermistor element carefully to avoid damage to the sensing bead or lead wires, as physical stress can affect calibration. Verify sensor placement and routing match the original configuration before restoring power.

Technical Specifications

• Component Type: Ambient Thermistor Sensor
• Application: Air Conditioner

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 624780R