Found that defrost control not functional on unit #1 unit was coming on for 2 or 3 seconds then shutting down made sure pressure switch on suction line is still working properly and also made sure pressures good found that there was no disconnect handle or Deadman plate used new one out of new disconnect. Price that was told for defrost control board 278$ Unit number 2 found that unit had leak valve stem was 1/2 turned out system took 3 lbs of 410a to get charges where needed. Customer is calling in to pay.