Alarm Menu

The Alarm 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, enter the Alarm menu to view the alarm.

Display will show either NO ALARMS or the newest ALARM. Alarm indicates corrective action should be taken. Red LED flashes and unit may stop or continue to run based on the alarm. Shutdown alarms are : 18, 51, 56, 127, 146, 147.

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. The Alarm description will be displayed across the top of the status display. To view the alarms press the Alarm key to go to the Alarm List Menu.

  1. Press the F4 key to access the Alarm menu. The first alarm code number, alarm state, and alarm description appears in the Display.

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

  2. Write down the first code. Then press the F2 or F3 Up/Down key to view next alarm code when more than one code has been recorded.

  3. Repeat above step until all alarm codes have been recorded. Press the F2 key to scroll backward to return to a previous code.

  4. To clear all alarm codes from the current display list and turn off the Alarm LED, all problems must be corrected and the alarm code “acknowledged” in the Alarm Overview.

  5. To acknowledge an alarm, press F4 ACK KEY while code appears on screen. The alarm state will change from Active or Not Active to Acknowledge. If no key is pressed for 30 seconds, the controller returns to previous menu level or Unit status display.

No Alarms or Newest Alarm

Parent topic: Main Menu

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.

A complete listing of the controller operating menu is located on an 11” x 17” fold out in the Diagrams chapter (Diagram Index).