Carrier VECTOR 6500 Operation & Service Manual page 213

Alarm
Steps
NO.
P159 CHECK DEFROST TERM 1 SENSOR
•
TRIGGER–ON: Defrost Termination Temperature Sensor (1DTT) is not within the range of -53 to
+158°F (-47 to +70°0 C.)
•
UNIT CONTROL:
•
RESET CONDITION: Auto Reset if Pretrip is started again, or alarm may be manually reset via
keypad or by turning the unit off, then back on again.
Check Sensor - refer to procedure for alarm 124
P160 CHECK DISCHARGE TEMP SENSOR
•
TRIGGER–ON: Compressor Discharge Temperature Sensor (CDT) is not within the range of
-40 to +392°F (-40 to +200°C. )
•
UNIT CONTROL:
•
RESET CONDITION: Auto Reset if Pretrip is started again or alarm may be manually reset via
keypad or by turning the unit off then back on again.
Check Sensor - refer to procedure for alarm 125
P161 CHECK SUCTION TEMP SENSOR (CST)
•
TRIGGER–ON: Suction Temp Sensor (CST) is not within the range of -53° to +158°F
(-47° to +70°C.)
•
UNIT CONTROL:
•
RESET CONDITION: Auto Reset when suction temperature sensor is in range or, alarm may be
manually reset via keypad or by turning the unit off, then back on again.
Check Sensor - refer to procedure for alarm 127
P164 CHECK UL2 CIRCUIT
•
TRIGGER–ON: Normal Amps for the Rear Unloader (UL2) Circuit is 0.75 to 2.0 Amps. The circuit
tests outside this range.
•
UNIT CONTROL:
•
RESET CONDITION: Auto Reset if Pretrip is started again, or alarm may be manually reset via
keypad or by turning the unit off, then back on again.
Check UL2 circuit - refer to procedure for alarm 86
62-11389
Alarm/Cause
Engine and Standby Operation: Pretrip will fail and display
"PRETRIP FAIL AND COMPLETED".
Engine and Standby Operation: Pretrip will fail and display
"PRETRIP FAIL AND COMPLETED".
Engine and Standby Operation: Pretrip will fail and display
"PRETRIP FAIL AND COMPLETED".
Engine and Standby Operation: Pretrip will fail in test 2 and display
"PRETRIP FAIL AND COMPLETED".
7−80
Corrective Action