Nordyne 626338R Limit Switch

The Nordyne 626338R Limit Switch is a mission-critical OEM safety component engineered for precision thermal monitoring in Intertherm, Miller, and Nordyne gas and electric furnaces. As a primary high-limit control, this L150-40F limit switch is designed to protect the heat exchanger from damage and prevent hazardous operating conditions. The switch utilizes a snap-disc mechanism that is factory-calibrated to cut power to the gas valve or heating elements when the internal plenum temperature reaches a 150?F trip point. Once the system cools to a safe 110?F reset point, the auto-reset limit switch restores the circuit, allowing for continued operation. This OEM Nordyne part ensures exact electrical specifications and mounting footprints are met, minimizing field adjustment time during emergency service calls. It serves as a direct drop-in replacement for legacy part numbers 626338, 6263380, and 313236, maintaining the integrity of the original system's safety string.

• Direct OEM Replacement: Ensures 100% compatibility with Nordyne 626338R furnace parts, eliminating the risks associated with generic universal switches.
• Precision Thermal Calibration: Features a fixed L150-40F rating with an open temperature of 150?F and a 40?F differential for reliable safety cycling.
• Broad Cross-Compatibility: Fits a wide range of mobile home and residential HVAC units including Miller, Intertherm, and Frigidaire furnaces.
• Standardized Electrical Interface: Equipped with 1/4" spade connectors for fast secure wiring in high-vibration blower compartments.
• Durable Construction: Built to withstand constant thermal cycling within the heat exchanger vestibule without drift or premature fatigue.

Is the Nordyne 626338R a manual or automatic reset switch?
This is an auto-reset limit switch. It will automatically close the circuit once the furnace temperature drops below 110?F, though technicians should always investigate the cause of the high-limit trip, such as a restricted air filter or failing blower motor.

What are the symptoms of a failing furnace limit switch?
A faulty 626338R limit switch typically causes the furnace blower to run continuously or prevents the burners from igniting. If the switch stays open, the safety circuit cannot be completed, stalling the ignition sequence.

Can I use this switch in various Nordyne sub-brands?
Yes, this component is the verified OEM replacement for various brands manufactured by Nortek, including Gibson, Tappan, Philco, and Broan, provided the original part number matches.

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.