Lennox 78L20 Valve 322838-753 the internal bimetal disc is

the internal bimetal disc is defective

provided the part number matches the service manual

the P86780 is the manufacturer-designated direct replacement for the 28877

as an OEM Carrier oil filter designed for modern chillers using refrigerants like R134A and R407C

this 208/230V single-phase component is essential for restoring the cooling capacity of Amana PTAC units and Goodman Packaged Terminal Air Conditioner systems

Lennox 78L20 Valve 322838-753 the internal bimetal disc isThe Lennox 78L20 Valve is a professional grade thermostatic expansion valve (TXV) designed for precision refrigerant metering in 3 ton residential and light commercial AC units. Engineered specifically for R22 and R407C refrigerants, this OEM component regulates flow into the evaporator coil to maintain optimal superheat, preventing liquid slugging and protecting the compressor from premature failure. Featuring a 3 8" x 1 2" ODF (Outside Diameter