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3.12 ALARM DISPLAY AND RESET
1. To reset the display, Press the FUNCTION key and then the UP or DOWN arrow key until ALARM RST is
displayed.
2. Press ENTER to clear the alarm. ALARM CLR will be displayed. (Unit will restart if alarm condition has been
corrected and unit is in Start/Stop or Auto OP).
The fault light (FL) illuminates only for alarms that specify it. If an alarm is generated, the default display is overrid-
den. When an alarm is generated, the display will alternate the default display (set point/compartment temperature)
and the active alarm(s). Each item is displayed for 3 to 10 seconds and will continue to scroll through the list. See
Table 3–7 for list of alarms.
Alternate Alarm Reset
Place the I/O switch in the OFF (O) position. (Unit can now be restarted after alarm condition has been corrected).
Table 3–7 Alarm Display
Code English Description
AL0 ENG OIL Low Engine Oil Pressure
AL1 ENG HOT High Engine Coolant Temperature
AL2 HI PRESS High Compressor Discharge Pressure
AL3 START-FAIL Start Failure After Three Attempts
AL4 LOW BATT Low Battery Voltage
AL5 HI BATT High Battery Voltage
AL6 DEFRFAIL Defrost Override
AL7 ALT AUX Alternator Auxiliary
AL8 STARTER Starter Motor - Engagement Not Sensed
AL9 1RA SENSOR Return Air Sensor Comp 1 Failure
AL10 2RA SENSOR Return Air Sensor Comp 2 Failure
AL11 WT SENSOR Coolant Temperature Sensor Failure
AL12 HIGH CDT High Compressor Discharge Temperature
AL13 CD SENSOR Discharge Temperature Sensor Failure