Arrived at location on 8/27/21 - Checked thermostat and sometimes it was sticking. Replaced thermostat and checked superheat which was high. Opened txv and got superheat to 6 degrees. Also this is a keg cooler. And the alcohol got warm and takes a very long time to cool back down so unit is constantly running causing it to ice up. Let manager know I’m on call if it acts up again.