626599R Nordyne 160 °F Manual-Reset Inducer Limit Switch

Product Overview

626599R is an official OEM inducer limit switch with a 160 °F cut-out and manual-reset design, used on Nordyne and compatible furnaces to protect against overheating in the inducer compartment.

Technical Specifications

• Cut-out temperature: 160 °F (72 °C)

• Reset style: Manual push-button

• Contact action: Normally closed; opens at cut-out temperature

• Connection: Quick-disconnect spade terminals

• Housing material: High-temperature thermoset plastic

Specifications compiled from Nordyne OEM data and parts suppliers2.

Cross-Reference Part Numbers

This limit switch supersedes the earlier 626599 part number, streamlining inventory and ordering.

Compatibility

• Nordyne single-stage and multi-stage gas furnaces requiring a 160 °F manual-reset inducer limit switch

• Miller-branded and Intertherm units with equivalent switch requirements

• Many private-label units under Westinghouse, Frigidaire, Gibson, and Tappan with identical specifications

Always verify against the appliance’s data plate or service manual before ordering.

Technician Notes

• De-energize all electrical and gas supplies before servicing the inducer assembly.

• Tag and photograph existing switch wiring and mounting orientation for accurate reassembly.

• Inspect inducer housing for debris or obstructions that can cause overheating.

• Install the new switch in the same location and orientation as the original to ensure correct temperature sensing.

• After mounting, initiate an inducer call: confirm the switch remains closed during normal operation and opens near 160 °F when the inducer is blocked or stalled.

• Press the manual-reset button only after the assembly cools below the cut-in temperature; do not force inrush of power while the switch is open.

• Replace vacuum-sealed grommets or sealant around the switch fitting if air leaks are detected.

Additional Resources

• OEM wiring diagram & installation manual (PDF)

• Printable cross-reference cheat sheet for limit switches

626499R is an official OEM Limit Switch 145F with Manual Reset for Nordyne HVAC equipment.