Common symptoms include the system shutting down shortly after startup

Can this sensor be used in outdoor air ducts

facilitating a precise fit during field retrofits

Key Benefits Direct Cross-Reference: Purpose-built to replace 768A-143 and compatible Thermo Products ignitors without field modification

this Source1 HVAC control board offers a direct-fit solution to restore OEM-standard logic and safety timings without the need for complex field modifications

Reznor 122858 Limit Switch L99H008 Common symptoms include the systemThe Reznor 122858 Limit Switch is a critical safety component designed for precise thermal regulation in Reznor unit heaters and makeup air systems. This 135F M R Limit Switch serves as a primary high limit safeguard, engineered to interrupt the electrical circuit if the burner inlet or discharge air temperature exceeds the fixed 135F threshold. As a manual reset limit switch, it requires a physical inspection and manual intervention by a qualified