Alarms

Parent topic: Truck Standard Display HMI Control Panel

Alarm Code Notification

If an alarm condition occurs, the Alarm Icon will appear on the display. If the alarm is a Check Alarm, the Alarm Icon will turn on but the unit will continue to run. If the alarm is a Shutdown Alarm, the Alarm Icon and the display will flash on and off and the unit will shut down. If the alarm is zone specific, the zone indicator will be present to show which zone has the alarm condition.

Alarm Icon

Displaying Alarm Codes

Alarms are displayed by simultaneously pressing and holding the ON Key and PRETRIP TEST Key. The upper display shown ( ON and PRETRIP TEST Keys) indicates that Alarm Code 127 Setpoint Not Entered has been set. The lower display indicates that only one alarm code exists. If more than one alarm code has been set, they are displayed with the most recent alarm shown first. Use the UP ARROW Key to scroll through the alarms.

ON and PRETRIP TEST Keys

Unit Alarm Codes

Unit alarms affect the operation of the entire unit. The Alarm Display shown above indicates that Alarm Code 127 exists and that there is only one alarm condition present.

Zone Specific Alarm Codes

If an alarm condition is specific to a zone, the zone indicator will be present to identify the zone experiencing the alarm condition. The Alarm Display shown ( Zone Specific Alarm Display) indicates that Alarm Code 127 Setpoint Not Entered exists in Zone 2. It also shows that a total of three alarm conditions exist.

Zone Specific Alarm Display

Multiple Alarm Codes

If more than one alarm code has been set, they are displayed with the most recent alarm shown first. Use the UP ARROW Key to scroll through the alarms.

Clearing Alarm Codes

After the alarm situation is resolved, press the ENTER Key to clear the alarm code currently being shown. When all alarms have been cleared, the display will show all zeros to indicate that no alarm codes exist.

ENTER Key

The display will return to the Standard Display about 30 seconds after all alarms have been cleared.

Standard Display

Important Alarm Notes

  • All alarms must be viewed before any of the alarms can be cleared.

  • If an alarm will not clear, it may still exist. If the alarm is not corrected, it will not clear or may be immediately set again.

  • Some alarms cannot be cleared using the HMI Control Panel. These alarms must be cleared by maintenance personnel from the Maintenance or Guarded Access Menus.

  • Alarm Code 91 Check Electric Ready Input is cleared by turning the unit off and back on. Refer to Switching From Electric To Diesel in this section.