140 Part Number STH025 8/12
One Evaporator, Two TXV 48” Models
Tubing routing for one evaporator with two TXV’s is
different. The evaporator has two inlets and outlets. Fill
pattern varies depending on which circuit is affected,
Extremely Thin at the Evaporator Outlet will first be
visible 1/3 of the way down the evaporator. Only one
side of the evaporator may be affected depending on
failure. A TXV failure will usually show on only one
side, while low on refrigerant can affect one or both
sides depending on the amount of refrigerant loss and
ambient temperature.
Extremely Thin at the Evaporator Inlet will show at
the bottom of the evaporator. Depending on the failure
either the entire bottom of the evaporator or one side
of the bottom of the evaporator may be affected..
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