While physically compatible with many fittings

the piezo button is the primary suspect and should be tested for continuity or replaced

Enhanced Safety Logic: The manual reset design prevents automatic cycling of the system under unsafe firing conditions

including 2 psig at 94 degrees F

Heil Quaker ICP 1174409 TXV R-410A While physically compatible with manyThe Heil Quaker ICP 1174409 TXV is a precision engineered thermal expansion valve designed for 2 ton R410A air conditioning systems. Engineered for high efficiency refrigerant metering, this hard shut off TXV features a 95 inch capillary tube, ensuring optimal superheat control and preventing liquid floodback to the compressor. As a genuine ICP OEM replacement part, it guarantees correct fitment and pressure ratings for Heil, Tempstar, Comfortmaker,