Nordyne 626424R Limit Switch

The Nordyne 626424R Limit Switch is a critical safety component designed for high-demand HVAC applications. This OEM Nordyne replacement part features a 3-1/8 inch insertion depth and is specifically calibrated for an operating range of 155?F to 175?F. As an automatic reset limit switch, the circuit is engineered to open when the temperature reaches the 175?F threshold and close once it cools back down to 155?F, protecting the heat exchanger from hazardous overheating conditions. This L175-20 furnace limit switch is built with a rugged metal housing to resist dust and moisture ingress, ensuring long-term reliability in burner compartments.

For service technicians and contractors, the 626424R provides seamless compatibility across a wide range of brands, including Miller, Intertherm, and Broan. Whether you are troubleshooting a furnace that is short-cycling or replacing a failed high-limit safety control, this genuine HVAC replacement switch ensures the system remains within its specified thermal parameters. Its normally closed configuration and precise temp-on/temp-off settings make it a standard inventory item for mobile home and residential gas furnace repairs.

• Precise Thermal Protection: Automatically opens at 175?F and resets at 155?F to maintain safe furnace operating temperatures.
• OEM Compatibility: Exact replacement for Nordyne 626424R, suitable for Intertherm, Miller, and Frigidaire units.
• Engineered Durability: Robust construction with a 3-1/8" probe designed for internal mounting in high-heat environments.
• System Reliability: Prevents damage to the heat exchanger by cutting the burner circuit during restricted airflow or over-temperature events.

How do I know if the 626424R limit switch is tripped or faulty?
Technicians should check for continuity across the terminals. If the switch is open at room temperature, it has likely failed or exceeded its mechanical life. Frequent tripping often indicates a dirty air filter, failing blower motor, or restricted ductwork rather than a switch failure.

Is this switch compatible with Intertherm mobile home furnaces?
Yes, the 626424R is the standard auto limit switch for many Intertherm and Miller mobile home gas furnaces that require a 175-degree cutout and a 3-inch insertion depth.

Can I use a higher temperature limit switch if this one keeps tripping?
No. You must always match the OEM temperature rating (175?F) specified by the manufacturer. Installing a higher temperature limit can lead to unsafe system operation and potential heat exchanger failure.

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.