Johnson Controls V-4440-1003 Valve Assembly R-410A How do I troubleshoot a

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Johnson Controls V-4440-1003 Valve Assembly R-410A How do I troubleshoot aJohnson Controls V 4440 1003 Three Way Brass Valve Assembly, 5 8", 4 to 12 Psi Spring Range, 4. 1 Cv normally Open Seat, 4. 7 Cv Normally Closed Seat, Includes Elbow Connector V 4440 1003 is the direct replacement for V 4440 0003, V 4440 3