Arrived at the customers residence and was greeted by the customers and was led to the thermostat and has a code 83 low pressure lockout and found that thermostat needed an update manually updated thermostat with micro chip to possibly clear code at this time increase thermostat temperature. Leak checked evaporator coil and found that coil is showing evidence of multiple leaks at this time. Leak checked outdoor unit and found no evidence of leaks at this time. Also found that refrigerant pressure is about 10 psi at this time. Leak search outdoor coil and found no evidence of leaks at this time. Office will need to contact Carrier to get pricing and other information needed at this time.