Emerson Alco 054969 Expansion Valve 321894-706 the ECM control module is

the ECM control module is the primary suspect

using the correct Aaon replacement part helps ensure proper system communication

It is standard practice to inspect or replace the mounting gasket when installing the 4311200 to ensure a gas-tight seal against the collector box

This package includes a rugged Handibox

Emerson Alco 054969 Expansion Valve 321894-706 the ECM control module isThe Emerson Alco 054969 is a high performance thermostatic expansion valve (TXV) engineered for precision refrigerant metering in commercial refrigeration systems. Featuring a balanced port design, this model HFE 1 2 RW45 5FT 3 8 x 1 2 SAE ANG ensures stable superheat control across varying head pressures, making it a reliable choice for R502 applications requiring 1 2 ton capacity. The externally equalized configuration allows for accurate pressure