Alarm

The Alarms menu displays the code conditions. Alarm codes are recorded in the controller memory to simplify unit diagnostic procedures. Some alarm codes are only recorded during a Pretrip (PTI) test or function test. Fault codes are retained by the controller in a non-volatile memory. If the Red LED is on or flashing:

  1. Press the Alarm function key to view the current alarm(s).

    The display will show either NO ALARMS or the newest ALARM with the descriptions.

    Note Alarm codes are displayed in sequential order, not in order of occurrence.
    		   

  2. Write down the first code, press the Up/Down navigation keys to view next alarm code when more than one code has been recorded.

    The alarm indicates corrective action should be taken. Red LED flashes, and unit may stop or continue to run based on the alarm. Alarm 56 (Compressor Temperature too high) is a Shutdown alarm.

    Shutdown alarms indicate the unit has been stopped to prevent damage to the unit or cargo. The condition must be corrected before restarting the unit.

    		   

  3. Hold the Enter key to acknowledge the alarm.

  4. Clear alarm code by correcting the problem.

  5. Press the Esc navigation key to exit the Alarm menu.

    To view the alarms, press the Alarm key to display the general unit error.

Parent topic: Operating Instructions

Clear Alarm

Resolve the problem to clear the alarm code(s) and the red LED will turn off. The display will show NO ALARMS.

Alarm Code States

There are three alarm code states for Shutdown and Check alarms:

  • Active: A code condition has occurred and continues to exist in the unit or the code condition occurred within the past one hour but does not currently exist in the unit.

  • Not Active: A code condition has occurred but no longer exists in the unit. Not Active means the code condition was corrected and did not reoccur for one hour, or the Unit On/Off switch was turned Off and then On.

  • Acknowledge: A code condition has been viewed and acknowledged in the Alarm or Message list. If the Alarm code condition still exists in the unit, the Red LED will stay on and not flash. If the code condition is corrected, the Red LED will turn off and the code condition will disappear from the Alarm/Message list.