Check LIV
refrigeration
Description
At the end of Test 13, the LIV energized and compressor discharge temperature delta did not reach 95°F (35°C) within 70 seconds; pretrip fails and shows “PRETRIP FAIL AND COMPLETED”.
Activation Conditions
With unit running at the end of Test 13 (ECXV closed, LIV de-energized, SMV set to maximum position and EVXV controlling normally), the LIV is energized. If the Compressor Discharge Temperature Delta (Initial Compressor Discharge Temperature - the Current Compressor Discharge Temperature) does not reach 95°F (35°C) within 70 seconds, it indicates that the LIV is not opening properly.
Unit Behavior
Engine and Electric Operation: Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
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 LIV Circuit - Refer to procedure for alarm 00114 Check LIV Circuit.