Lennox 78W99 Limit Switch 319847-401 Precise Superheat Control: Regulates refrigerant

Precise Superheat Control: Regulates refrigerant flow to protect the compressor and optimize coil surface utilization

These flat sealing gaskets are engineered for a precise fit at 1-1/2" joints

maintaining stable operation and protecting expensive downstream components like fan motors and compressors from premature wear

this component is critical for maintenance cycles involving the 15

eliminating the need for complex blowdown piping

Lennox 78W99 Limit Switch 319847-401 Precise Superheat Control: Regulates refrigerantThe Lennox 78W99 Limit Switch is a critical safety component engineered to regulate heat exchanger temperatures within Lennox G40, G41, G50, G51, and G61 gas furnaces. This L235 30F thermal limit control features a fixed temperature setting, designed to open the electrical circuit at 235F and automatically reset once temperatures drop by a 30F differential. Precision calibrated for high limit protection, this SPST (Single Pole Single Throw) switch