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P00159@vector-8600mtlow

Check Defrost Termination 1 Sensor

refrigeration

Description

The defrost termination temperature sensor is out of range, and pretrip fails with “PRETRIP FAIL AND COM- PLETED”.

Activation Conditions

Defrost Termination Temperature Sensor (1DTT) is not within the range of -53 to +158°F (- 47 to +70°0 C.)

Unit Behavior

Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COM- PLETED”.

Reset Conditions

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.

Corrective Actions

Check sensor operation - Refer to procedure for alarm 00124 Check Defrost Term 1 Sensor. Alarm condition must be corrected and the alarm cleared to continue.