Nordyne 626446R Limit Switch

As a seasoned technician, you know that a locked-out furnace usually traces back to a failed safety limit. The Nordyne 626446R Limit Switch is the OEM replacement part designed to restore safe operation to your gas furnace or gas pack. This 120-140F Auto Limit Switch features a critical 3.5-inch insertion length and serves as the direct cross of 626446 and 6264460. Engineered for high-limit protection, this SPST (Single Pole Single Throw) switch is calibrated to open on rise at 140°F and automatically reset when temperatures drop to 120°F. Whether you are servicing Intertherm, Miller, Gibson, or Broadcom equipment, the Nordyne 626446R ensures the HVAC temperature control remains within manufacturer specifications, preventing heat exchanger damage and ensuring consistent furnace safety during heavy heating cycles.

• Direct OEM Compatibility: Engineered as the direct cross-reference for part numbers 626446 and 6264460, ensuring a perfect fit without modification.
• Automatic Reset Logic: Features L140-20F logic, meaning the switch automatically resets once the plenum cools, reducing unnecessary service call-backs.
• Precise Safety Calibration: Maintains a strict 120°F to 140°F operating range to protect the gas furnace from overheating and potential cracks in the heat exchanger.
• Versatile Application: Validated for use across a wide range of Nordyne brands including Tappan, Westinghouse, and Frigidaire split systems.

What causes a Nordyne limit switch to trip repeatedly?
Frequent tripping of the 626446R limit switch is usually caused by restricted airflow. Check for a dirty HVAC filter, blocked return ducts, or a failing blower motor that isn't pulling enough heat off the exchanger.

Is the 626446R compatible with Intertherm mobile home furnaces?
Yes, this Nordyne limit switch is a standard safety component in many Intertherm and Miller units often found in manufactured housing. Always verify the temperature stamp on your existing part before installation.

Can I test this switch with a multimeter?
You can check for electrical continuity across the terminals. At room temperature, the Nordyne 626446R should show a closed circuit (continuity). If it remains open while cool, the switch is defective and requires immediate HVAC part replacement.

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.