Carrier 69NT40-561-300, Руководство по эксплуатации и обслуживанию

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T-365 4–40
AL08 HIGH COMPRESSOR PRESSURE RATIO
Cause: Controller detects discharge pressure to suction pressure ratio is too high.
The controller will attempt to correct the situation by restarting the compressor.
Component Discharge Pressure Transducer (DPT)
Troubleshooting Confirm accurate DPT pressure readings, refer to MANIFOLD
GAUGE SET
Section 7.2 .
Corrective Action Replace DPT if defective.
AL10 CO
2
SENSOR FAILURE
Cause: Alarm 10 is triggered when the C
O
2
sensor voltage is operating outside of the 0.9 v to 4.7 v range,
or if the sensor is out of range.
Component This is a display alarm and has no associated failure action.
Troubleshooting Refer to eAutoFresh manual.
Corrective Action The alarm is triggered off when voltage is within operating range.
AL14 PHASE SEQUENCE DETECT FAULT
Cause: Controller is unable to determine the correct phase relationship.
Component N/A
Troubleshooting Power cycle the unit.
Corrective Action Resetting the unit may correct problem, monitor the unit.
Component Wiring
Troubleshooting Check unit wiring.
Confirm pressure readings during start-up; suction pressure should
decrease and discharge pressure should increase.
Corrective Action Correct wiring.
Component Current Sensor
Troubleshooting Check Cd41, right most digit:
If display is 3 or 4 check compressor / sensor wiring.
If display is 5 the current sensor is defective.
Corrective Action Replace current sensor if defective.