For technicians and contractors

the limit switch likely has a failed bimetal element or a continuity break

this cable includes the common wire (C-wire) necessary for powering modern WiFi-enabled thermostats and multi-stage control boards

the Lennox 46K18 ensures optimal fuel-to-air mixing for clean ignition

Fenwal 35-725206-115 Control R-410A For technicians and contractorsThe Fenwal 35 725206 115 is a high performance 120V Direct Spark Ignition (DSI) control specifically engineered for precision firing in gas fired heating equipment. This microprocessor based module is designed for reliability in demanding environments, featuring a 3 trial ignition sequence (3TRY) to ensure consistent burner operation even in challenging conditions. The timing logic is factory set with a 15 second pre purge (15sPP) to clear the