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7
−
80
62-11389
Alarm
NO.
Steps
Alarm/Cause
Corrective Action
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:
Engine and Standby Operation: Pretrip will fail and display
“PRETRIP FAIL AND COMPLETED”.
•
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:
Engine and Standby Operation: Pretrip will fail and display
“PRETRIP FAIL AND COMPLETED”.
•
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:
Engine and Standby Operation: Pretrip will fail and display
“PRETRIP FAIL AND COMPLETED”.
•
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:
Engine and Standby Operation: Pretrip will fail in test 2 and display
“PRETRIP FAIL AND COMPLETED”.
•
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