Hi guys hope yall can help me out. These drawers are in a Dennys restaurant under their cook tops. Condensing unit is on the roof and it runs 3 different small evaporators with 2 drawers each one of top of the other under the cooktop. Not really sure how common these are but this is the problem. When I got there all 2 of the evaporators cooling the box to about 34* and one of them cooling at 27* box temperature. On the roof the line is all frozen up including about half of the compressor. The evaporators have some frost on them but not blocked and fans are turning at the evaps. Ive got a clear site glass my low side pressure is 35 and high side is 320. Ive got a 14 degree line temp at the compressor. These evaporators are small and very difficult to get to with no service port fittings. Anyone who can help me out? Im primarily an HVAC guy who was thrown into these restaurants and Im a bit rusty. These drawers are low temp and not med temp.