Rheem-Ruud 47-22383-13 Limit Switch

The Rheem-Ruud 47-22383-13 Limit Switch is a critical safety component designed for high-limit protection in gas furnaces and air handlers. This OEM Rheem replacement part features a 260°F fixed open temperature and a normally closed (NC) SPST switch configuration. Engineered to interrupt the heating circuit upon detecting an over-temperature condition, it ensures system integrity by preventing heat exchanger damage. This specific model is a manual reset limit switch, meaning once the 260°F threshold is reached and the circuit opens, a technician must physically reset the device after the system has cooled (minimum 210°F) and the underlying airflow or combustion issue has been resolved. The hardware utilizes a flanged airstream mounting style with a 3/16-inch maximum insertion depth and industry-standard 1/4-inch quick-connect terminals for seamless electrical integration. It serves as a direct drop-in for several legacy part numbers, including 47-22383-12 and 47-22383-07, maintaining the precise calibration required for HVAC safety controls.

• Precise Safety Calibration: Fixed 260°F trip point provides reliable protection against furnace overheating.
• Manual Reset Security: Prevents the system from auto-cycling after a high-limit trip, forcing an inspection of the root cause.
• Universal Compatibility: Replaces multiple previous versions including 47-22383-03, 47-22383-08, and 8405-5657.
• Durable Construction: Features an enclosed disc face and a TOD 36T series switch body for resistance to airstream contaminants.
• Simple Installation: Standard 1/4-inch terminals and flanged mounting allow for fast field replacement by contractors.

How do I know if this limit switch is tripped?
If the furnace blower runs continuously while the burners fail to ignite, or if you have a specific diagnostic code for an "Open Limit," check this part for continuity. If it is open and the system is cool, press the manual reset button.

What causes a 260-degree limit switch to trip repeatedly?
Frequent tripping is usually indicative of restricted airflow. Inspect for a clogged air filter, blocked return grilles, a failing blower motor, or a cracked heat exchanger. Do not bypass this switch.

Can I use this to replace an auto-reset switch?
No. You must always match the reset type and temperature rating specified by the manufacturer. Replacing an auto-reset with a manual reset (or vice versa) can alter the safety sequence of the equipment.

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.