Rheem-Ruud 47-25349-01 Limit Switch

The Rheem-Ruud 47-25349-01 Limit Switch is a critical safety component designed for precise thermal regulation in high-efficiency furnaces and air handlers. This board-mounted high limit switch features a 160-degree F fixed open temperature and a 140-degree F fixed close temperature, ensuring the system shuts down if the heat exchanger exceeds safe operating limits. Engineered as an SPST normally closed switch with an automatic reset, it eliminates the need for manual intervention after the unit cools. The 3-inch insertion length allows for accurate airflow temperature sensing, while the red/red color-coding ensures rapid identification during field service. For technicians performing a Rheem furnace limit switch replacement, this OEM component maintains the original equipment's safety sequence. Its general purpose temperature control design is robust enough to handle the cycling requirements of commercial and residential HVACR applications, preventing heat exchanger damage and ensuring reliable system operation under varying static pressure conditions.

Key Benefits for HVACR Technicians:

• Exact OEM Match: Ensures proper fit and electrical compatibility with Rheem-Ruud 47-25349-01 specifications, reducing callbacks.
• Fixed Thermal Calibration: Factory-set 160°F trip point provides consistent over-temperature protection without the drift associated with adjustable switches.
• Durable Construction: Built to withstand the harsh environment of a furnace burner box or plenum.
• Simplified Installation: The board-mounted configuration and standard spade terminals allow for a quick hvac limit switch repair process.

Common Questions:

Where is the 47-25349-01 limit switch located?
This switch is typically found mounted directly on the blower housing or the burner bulkhead, where the 3-inch probe can monitor the discharge air temperature.

What causes this limit switch to trip frequently?
Repeated tripping usually indicates restricted airflow, often caused by a dirty air filter, blocked return vents, or a failing blower motor.

Can I bypass this switch for testing purposes?
Technicians may briefly jump the switch to diagnose a failure, but the unit must never be left operating without a functional limit switch, as it is a primary safety device.

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.