Got a call to a store that had ice reported on their suction line on the roof. there was some ice on the suction line but ended at the service valve on a discus compressor. Talked to another tech about it and he said some say this is normal and some say it's floodback. Your running a 3 door reach in / walking in Freezer and it has to run a lot because it's getting stocks and shopped all the time. I haven't checked superheat yet and I'm going to but, just on the info here who thinks this is normal?