The unique three-way elbow copper pipe layout perfectly matches the 30HXC series factory pipe routing, minimizing on-site brazing rework during major overhauls.

The waterproof shielded signal connector can suppress electromagnetic interference generated by high-power compressor drive components.

Strictly require the use of the dedicated PD4 EXV driver board output; direct voltage input will permanently damage the internal stepper motor windings.

Compared with 32GB404454 and 32GB404464, the flow coefficient and internal hole geometry are different; even if they look similar, they are not allowed to be interchanged across models.

The system side requires filtration and complete vacuum pumping before it can be put into operation; tiny solid impurities can clog the precision metering components.

Common failure modes: stepper motor position deviation leading to overheating optimization, system impurities blocking the orifice, connector pin corrosion, and continuous oscillation of the evaporator pressure.