If the furnace fires but the blower fails to engage in the "Auto" setting

Rapid Response: Utilizes a liquid-filled bulb for immediate temperature detection and reliable SPDT switching

For technicians performing in-line maintenance or a full rebuild

The Emerson 065405 uses a chemically treated paper that changes color based on the parts per million (PPM) of moisture

Sporlan 040332-01 TXV Valve 30067439-890 If the furnace fires butThe Sporlan 040332 01 CE B JW TXV Valve is a thermostatic expansion valve engineered for precise refrigerant metering in performance critical HVACR systems. This CE B JW series valve features 3 8 x 1 2 SAE flare connections, providing a mechanical, leak proof seal without the need for brazing in the field. Designed with a type B body, it utilizes a balanced port design to maintain consistent superheat control across a wide range of operating