Carrier 69NT40-541-505 Operation And Service Manual page 68

AL63 CURRENT LIMIT
Component
Corrective Action Correct power supply.
Component
Corrective Action The current limit can be raised (maximum of 23 amps) using Cd32.
AL64 DISCHARGE TEMPERATURE SENSOR (CPDS)
Cause: Discharge Temperature sensor out of range.
Component
Corrective Action Replace the CPDS if defective, refer to Temperature Sensor Service
AL65 DISCHARGE PRESSURE TRANSDUCER (DPT)
Cause: Compressor Discharge Transducer is out of range.
Component
Corrective Action Replace DPT if defective
AL68 CPC PRESSURE SENSOR (PS3)
Cause: Condenser Pressure Transducer (CPC) out of range.
Component
Corrective Action Unit will disable Con denser Pressure Control if Configured.
AL69 SUCTION TEMP SENSOR (CPSS)
Cause: Suction Temperature Sensor (CPSS) out of range.
Component
Corrective Action Replace CPSS if defective, refer to Temperature Sensor Service
T-368
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Power supply
Troubleshooting Confirm supply voltage/frequency is within specification and balanced ac-
cording to Electrical Data
Current limit set too low
Troubleshooting Check current limit setting Code Cd32.
Discharge temperature sensor (CPDS)
Troubleshooting Test the CPDS; refer to Temperature Sensor Service
tion 7.21.
Compressor Discharge Transducer (DPT)
Troubleshooting Confirm accurate DPT pressure readings, refer to Manifold Gauge Set
tion 7.2.
Condenser Pressure Transducer (CPC)
Troubleshooting NA
Suction Temperature Sensor (CPSS)
Troubleshooting Test the CPSS, refer to Temperature Sensor Service
7.21.
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Section 3.3.
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Section 7.21.
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Section 7.21.
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