Nordyne 626470R Limit Switch

The Nordyne 626470R Limit Switch is a critical safety component designed for precise thermal regulation within Nordyne, Intertherm, and Miller gas furnaces. This 115-155F AUTO limit switch functions as a high-limit safety control, monitoring the heat exchanger temperature to prevent overheating and potential equipment failure. As an L155-40F furnace limit switch, it is engineered to open the circuit at a fixed 155°F set point and automatically reset once the temperature drops by a 40°F differential to 115°F. This OEM replacement part ensures exact electrical specifications and mounting alignment, maintaining the integrity of the furnace’s safety string. For technicians troubleshooting frequent furnace high limit trips, verifying airflow across the heat exchanger and checking for a restricted filter is essential before installing this automatic reset limit switch. Reliable thermal logic in this Nordyne furnace safety switch protects the blower motor and heat exchanger from excessive thermal stress during demanding heating cycles.

• Precise Thermal Calibration: Calibrated to trigger at 155°F and reset at 115°F for consistent safety monitoring.
• OEM Compatibility: Specifically engineered for a drop-in fit for Nordyne 626470 and 626470R part numbers.
• Automatic Reset Logic: Eliminates the need for manual intervention after the heat exchanger reaches a safe operating temperature.
• Durable Construction: Built to withstand high-cycling environments in residential gas furnaces.

Common Technical Questions

What causes a Nordyne 626470R to trip repeatedly?
Frequent tripping is usually indicative of restricted airflow, often caused by a dirty air filter, blocked return vents, or a failing blower motor assembly rather than a faulty switch.

Can this switch be used in mobile home furnaces?
Yes, this is a standard safety component for many Intertherm and Miller mobile home gas furnaces that require a 155-degree high limit.

How do I verify if my current limit switch is detective?
Perform a continuity test with a multimeter while the furnace is cool; the switch should show a closed circuit (0 ohms) under normal operating conditions.

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.