Arrived on site and checked in with MOD. customer complained walk in cooler not maintaining temperature. checked condenser and found condenser fan motor is bad. need to replace. will order and return to repair. further diagnostic will be required at that time. 10/7/20 Arrived on site and checked in with MOD. removed and replaced condenser fan motor. ran and tested unit. found system low of R-22 charge. charged system with R-22. ran and tested. unit working properly at this time.