Nordyne 626467R Limit Switch

The Nordyne 626467R Limit Switch is a critical safety component designed for intermittent ignition furnace systems and electric heat packages. This auto-reset limit switch features a 3-inch insertion depth and is calibrated for an L180-20F temperature range, meaning it opens at 180?F and closes with a 20-degree differential. As an OEM replacement part, this high-temperature limit ensures precise thermal protection within the heat exchanger assembly, preventing catastrophic overheating during airflow restricted events or blower motor failure. HVAC contractors utilize this specific Nordyne furnace part for its reliability in Miller and Intertherm mobile home furnaces. The snap-disc design provides consistent switching performance, ensuring the furnace high limit operates within strict manufacturer tolerances to maintain system integrity and safety during high-demand heating cycles.

Key Benefits for Technicians

• Precise Thermal Calibration: The L180-20F rating ensures accurate circuit interruption to prevent heat exchanger damage.
• OEM Compatibility: Direct replacement for Nordyne 626467, simplifying field installation and ensuring correct fitment in narrow plenum spaces.
• Automatic Reset Logic: The 626467R auto-reset functionality restores the circuit once temperatures drop below the 160?F threshold, reducing unnecessary service calls.
• Durable 3-Inch Probe: The extended 3-inch insert allows for accurate temperature sensing deep within the primary airflow path.

Common HVAC Technical Questions

What causes this limit switch to trip repeatedly?
Nuisance tripping is typically caused by restricted airflow, such as a dirty furnace filter, blocked return ducts, or a failing blower motor capacitor causing reduced RPMs.

Can I use a generic limit switch instead of the 626467R?
While universal switches exist, the 626467R is specifically engineered for the thermal profile of Nordyne HVAC units. Using an incorrect insertion depth or temperature rating can lead to premature failure or safety hazards.

Is the 626467R compatible with Miller gas furnaces?
Yes, this limit control is a standard replacement part for many Miller and Intertherm M1, M7, and CMF series furnace models.

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.