replacing the entire harness is the standard practice for long-term reliability

Common Questions from the Field Is the HPC-165-S-HH a direct replacement for S1-404281

and AV-293 valve linkage kits

parallel circuit regulator

Lennox 10W77 Expansion Valve 323080-701 replacing the entire harness isThe Lennox 10W77 Expansion Valve is a critical OEM R 22 expansion valve designed for precise refrigerant metering in residential and commercial cooling systems. This thermostatic expansion valve (TXV) includes an internal check valve, making it a direct replacement for heat pump applications and air conditioning units. Engineered by Parker for Lennox, the 10W77 regulates flow based on evaporator load to prevent slugging and optimize superheat levels.