Carrier 69NT40-541-505, Operation And Service Manual, Page: 68 / 143

T-368 4–38
Component Power supply
Troubleshooting Confirm supply voltage/frequency is within specification and balanced ac-
cording to Electrical Data
Section 3.3 .
Corrective Action Correct power supply.
Component Current limit set too low
Troubleshooting Check current limit setting Code Cd32.
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 Discharge temperature sensor (CPDS)
Troubleshooting Test the CPDS; refer to Temperature Sensor Service Section 7.21 .
Corrective Action Replace the CPDS if defective, refer to Temperature Sensor Service Sec-
tion 7.21 .
AL65 DISCHARGE PRESSURE TRANSDUCER (DPT)
Cause: Compressor Discharge Transducer is out of range.
Component Compressor Discharge Transducer (DPT)
Troubleshooting Confirm accurate DPT pressure readings, refer to Manifold Gauge Set Sec-
tion 7.2 .
Corrective Action Replace DPT if defective
AL68 CPC PRESSURE SENSOR (PS3)
Cause: Condenser Pressure Transducer (CPC) out of range.
Component Condenser Pressure Transducer (CPC)
Troubleshooting NA
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 Suction Temperature Sensor (CPSS)
Troubleshooting Test the CPSS, refer to Temperature Sensor Service Section 7.21 .
Corrective Action Replace CPSS if defective, refer to Temperature Sensor Service Section
7.21 .
AL63 CURRENT LIMIT
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