When diagnosing short-cycling or thermal lockout issues

making it an efficient solution for monitoring both supply and return air in a single system

the 031780500 TXV power head modulates refrigerant flow through the expansion valve assembly

the 46K69 (also identified as 46K6901 and 40154B-006) provides the high-duty cycle reliability required in high-demand Lennox air handlers and furnaces

High Temperature Tolerance: Rated for medium temperatures up to 266°F

Lochinvar & A.O. Smith 100167817 Ignition Module THPU32HP7Y When diagnosing short-cycling or thermalThe Lochinvar & A. O. Smith 100167817 Ignition Module is a critical OEM replacement for RLY3006 and S8610H30 18, engineered to handle sequence control in high efficiency gas fired appliances. This 24V intermittent pilot ignition control manages the gas valve, detects flame presence, and provides safety shutoff for residential and commercial heating systems. Operating at 24 VAC (50 60Hz) with a 150mA current draw, it is the direct factory authorized