Outdoor unit would not run on on arrival. Found contactor was not getting call for cool. Core sense diagnostics was flickering. Disconnected From system and issue persisted. Disconnected high low pressure cutoff for test purposes. Unit fired after that. Recommend replacement of pressure switches and diagnostics module. Informed customer to go through center point for repair due to cost of labor we would have to charge. Warranty give to to customer is through center point only. Collected diagnostics fee for visit today.