GE PFE29PSDASS Manual page 73

3-Way Valve
The 3-way valve is used to direct refrigerant flow.
The valve has four different positions.
They are referred to by the letters 'A', 'B', 'C' and 'D'
A = Open to the Fresh Food and Freezer evaporators in series (refrigerant
flows through the fresh food evaporator and then into the freezer
evaporator). This is also called the
B = Open to the Freezer evaporator only
C = Open to both the Fresh Food and Freezer evaporators via the individual
capillary tubes (this position is not currently used on these models)
D = Closed to both Fresh Food and Freezer evaporators during the off cycle
(Home Position)
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5/4/2012