Lennox 26H78 Rollout Switch Vibration-Resistant Design: Deep-seated threads and

Vibration-Resistant Design: Deep-seated threads and heavy-duty wall thickness provide a stable "make and break" connection that withstands compressor cycling

this adapter features a 3/8" SAE flare connection by a 1/2" MPT (Male Pipe Thread)

It maintains the same 3/4" FxF connections and 30# pressure rating for direct drop-in compatibility

A healthy LH680534 Flame Sensor typically produces a steady signal between 1

Lennox 26H78 Rollout Switch Vibration-Resistant Design: Deep-seated threads andThe Lennox 26H78 Rollout Switch (catalog number 26H7801) is a critical safety component designed for furnace flame rollout protection. This OEM Lennox part is a manual reset, SPST (Single Pole Single Throw) configuration that actuates at a fixed temperature of 260 degrees F. When the switch senses excessive heat near the burner boxtypically caused by a cracked heat exchanger, blocked flue, or insufficient combustion airit breaks the 24V circuit to the