Nordyne Intertherm 626423 Furnace Limit Switch

Product Description

The NORDYNE INTERTHERM 626423 is a furnace limit switch designed to protect heating equipment from overheating conditions. Mounted in the heat exchanger or plenum area, this safety control monitors temperature and interrupts the burner circuit when the air temperature exceeds the rated setpoint. It resets manually or automatically depending on configuration. Licensed HVAC technicians install this component during maintenance, troubleshooting, or as a direct replacement when an existing limit switch has failed or trips repeatedly due to airflow restrictions or heat exchanger issues.

This limit switch is suited for residential gas furnace applications where overtemperature protection is required. It is a direct replacement part for NORDYNE INTERTHERM furnace systems. Technicians typically encounter a failed or nuisance-tripping limit switch when diagnosing short-cycling or no-heat service calls. Restoring proper limit switch function is essential before returning the system to service.

Key Features

• Overtemperature safety device that interrupts the burner circuit on high-limit events
• OEM replacement part for NORDYNE INTERTHERM furnace systems
• Designed for installation in heat exchanger or supply plenum locations
• Helps prevent heat exchanger damage caused by sustained overheating conditions

Compatibility

Designed as an OEM-style replacement limit switch for NORDYNE INTERTHERM residential gas furnace systems.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect all power to the furnace and shut off the gas supply before removing or installing a limit switch. Follow applicable local codes and IFGC guidelines during service. After installation, verify proper airflow and system operation before returning the unit to service.

Technical Specifications

• Component Type: Limit Switch

Standard Information

• Brand: NORDYNE INTERTHERM
• Manufacturer Part Number: 626423