Upon arrival inspected system and found unit in E09 cycle. Each time unit started it would stop running due to E09. Inspected all limits and switches and found no errors on switches, aside from condensate switch tripped while running. Hookup manometer to condensate and monitor never changing from 0.8. Unit will not fault after inspecting pressure switch. Believe water was in switch faulting pressure switch or switch itself may be on the way out becoming faulty. Unit running fine at this time post inspection.