hey everyone,

I am having issues with my display cooler

Symptoms: cooler not going any lower than 62F and txv valves /distributor icying upon both evaporators.

Measurements:

Refrigerant: R401A

suction line: 6 PSI @ 58F
liquid line : 90 PSI @ 80 F

according to R401A P/T chart,

superheat= 57F
subcooling= 5F

What s the cause of the problem? how can i fix it?

Thank you for your help