Carrier chiller alarm codes; The following list gives a complete description of each alarm code and its possible cause. Carrier Chiller Error Codes Alarm Codes Description 1 Evaporator entering fluid thermistor failure 2 Evaporator leaving fluid thermistor failure 3 Condenser entering fluid thermistor failure 4 Condenser leaving fluid thermistor failure 5 Condenser entering fluid thermistor failure 6 Condenser leaving fluid thermistor failure 7 Outdoor temperature sensor fault 8 CHWS (master/slave) fluid thermistor fault 9 Compressor A1, discharge gas sensor 10 Compressor A2, discharge gas sensor 11 Compressor B1, discharge gas sensor 12 Compressor B2, discharge gas sensor 13 External 0-10 V dc signal fault 14 Discharge pressure transducer failure,circuit A 15 Discharge pressure transducer failure, circuit B 16 Suction pressure transducer failure, crt A 17 Suction pressure transducer failure, crt B 18 Oil pressure transducer failure, compr A1 19 Oil pressure transducer failure, c...