Ferguson Enterprises 1370902s Primary Limit Switch 210F

Product Description

The FERGUSON ENTERPRISES 1370902s is a primary limit switch rated at 210 degrees F, used to protect gas furnace heat exchangers and burner assemblies from overheating. The switch monitors supply-air temperature and opens the control circuit when the preset trip point is reached, shutting down the burner to prevent heat exchanger damage. This is a genuine OEM replacement part intended for licensed HVAC technicians performing component-level furnace repairs. It restores proper high-limit protection in systems where the original switch has failed an open or shorted condition.

This primary limit switch is designed for use in residential and light-commercial gas furnace applications. It installs in the furnace cabinet where airflow across the heat exchanger is monitored. A failed or nuisance-tripping limit switch is a common service call item, and replacing it with an OEM-spec part ensures the control board sees accurate thermal protection signals. No specific compatible model numbers were provided in the product data.

Key Features

• 210 degrees F trip point provides high-limit protection for the heat exchanger
• Genuine OEM replacement part for accurate fitment and performance
• Opens the control circuit on overtemperature to protect the heat exchanger and burner assembly
• Component-level repair part suited for licensed HVAC service technicians

Compatibility

Designed as an OEM-style replacement primary limit switch for residential gas furnace applications. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power to the furnace at the disconnect switch or breaker and shut off gas supply before beginning any service work. Remove the original switch and note wire terminal positions before disconnecting leads to ensure correct reconnection. Verify the replacement switch trip point matches the original specification before returning the system to service.

Technical Specifications

• Trip Temperature: 210 degrees F
• Part Type: Primary Limit Switch

Standard Information

• Brand: FERGUSON ENTERPRISES
• Manufacturer Part Number: 1370902s