Nordyne 626337R Fan Control

The Nordyne 626337R Fan Control is a critical OEM replacement part designed for gas furnaces requiring a fixed F115-30F fan switch. Engineered for Nordyne gas furnaces and compatible private-label air handlers, this temperature-actuated control regulates blower activation to optimize thermal transfer and prevent heat exchanger overheating. The F115-30F limit switch features a fixed fan-on temperature of 115?F and a fan-off threshold of 30?F, ensuring the blower motor only operates when the plenum has reached sufficient heat, preventing the circulation of cold air during the startup cycle. As a direct 626337B replacement, this HVAC fan limit control utilizes a standard SPDT contact arrangement rated for 120 VAC applications. For field technicians, the 626337R furnace part mounts directly to the plenum boss, maintaining system reliability and ensuring precise timing between the ignition sequence and blower deployment in high-efficiency heating systems.

• OEM Reliability: Direct fit Nordyne 626337R ensures seamless integration with original furnace wiring and mounting footprints.
• Fixed Temperature Logic: Factory-set F115-30 settings eliminate field calibration errors and ensure consistent blower timing.
• Plenum Protection: Prevents heat exchanger stress by managing airflow based on real-time internal temperatures.
• Broad Compatibility: Replaces legacy part numbers including 626337, 626337B, 6263370, and 200071.

Common Questions:

What are the fixed temperature settings for this control?
The 626337R is an F115-30F model, meaning it triggers the fan "on" once the temperature reaches 115?F and cuts the fan "off" at 30?F. Note that in most residential furnace applications, the "off" temperature effectively functions as a low-limit safety or residual heat purge.

Can I use this to replace a 626337B fan control?
Yes, the 626337R is the official OEM successor and direct functional replacement for the 626337B and several other legacy Nordyne limit switches.

Why is my furnace blower running constantly or not turning on?
A failed fan control switch often stays stuck in the open or closed position. If the bi-metal sensor fails, the blower may fail to engage during the heat call or refuse to shut down after the cycle. In these cases, 120V continuity testing across the fan terminals is recommended.

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.