Resideo 50001464-004 Sensor Assembly

The Resideo 50001464-004 Sensor Assembly is a critical replacement component for residential and light commercial boiler systems. Designed for technical precision, this 36-inch leadwire sensor provides real-time temperature feedback to Honeywell Electronic Aquastat Controllers, including the L7224A, L7248C, and L7248L series. This assembly is a drop-in replacement for the 50001464-004/B and includes a pre-terminated Molex connector and mounting grommet, ensuring a secure, low-resistance connection to the circuit board. By utilizing an accurate immersion well sensor, the system can maintain tight high-limit and low-limit differentials, optimizing fuel efficiency and preventing short-cycling in oil and electric boiler applications.

Key Benefits for Technicians:

• Broad Compatibility: Engineered specifically for L7224 and L7248 series Oil Electronic Aquastat Controllers.
• Precise Sensing: High-accuracy NTC thermistor assembly ensures the controller accurately tracks boiler temperature for safety limit and circulator control.
• Simplified Installation: Features a factory-installed Molex connector for plug-and-play attachment to the PCB, reducing field labor time.
• Durable Construction: The 36" leadwire is built to withstand standard boiler cabinet temperatures and provides flexible routing to the immersion well.
• OEM Reliability: Genuine Resideo HVAC parts ensure the sensor matches the original manufacturer resistance-to-temperature curve for consistent performance.

Common Questions:

Does this sensor work with all L7224U universal controllers?
Yes, the 50001464-004 is the standard 36" lead replacement sensor for the L7224 series, including the L7224U1002 universal model.

What is the difference between the 50001464-004 and the 50001464-004/B?
There is no functional difference; the /B suffix typically denotes a bulk or revised packaging designation. They are technically identical and interchangeable.

How do I know if the sensor has failed?
If your Aquastat displays an "Err 1" or "Sensor Fault" code, check the resistance of the sensor against a standard Honeywell resistance chart. A reading of open or shorted indicates the assembly must be replaced.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.