General Information
36833 C MGG100M Operating Manual 25
H-100 System Alarm and Warning Pages
There are three System Alarm and Warning pages. Each displays up to three alarms and warnings. If there are more
than nine total alarms and warnings to list, then only the most recent nine will be visible. All alarms and warnings
remain in the list until they are cleared. Warnings clear when they are no longer active. Normal Alarms clear when
they are no longer active and have been acknowledged. Shutdown alarms clear only after the key switch has been
placed in the OFF position and they are no longer active. There are a few shutdown alarms that will only clear after
a power cycle of the controller and they are no longer active. DTCs only clear after 3 consecutive run cycles with no
corresponding fault conditions. Besides using the menu to get to the alarm pages, the right display immediately
changes to the first alarm page when an alarm, warning, or DTC first becomes active. If a shutdown alarm is active
and an alarm or warning is not acknowledged, the displays will flash with the Alarm LED.
To view the alarm/warnings pages:
1. Press MENU. The main menu displays, with the cursor on the A in Alarms (Figure 10).
2. Press ENTER. The System Alarm and Warning Page displays (Figure 18).
Figure 18 - Typical System Alarm and Warning Page
The table below explains each display item.
Display Item Description
Wr
Warning type
•AI: Alarm
• SD: Shutdown alarm
• DT: Emissions DTC
* Indicates fault has not been acknowledged
COOLANT TEMP Hi
Fault condition
• Hi: Tripped by being above threshold
• Lo: Tripped by being below threshold
• Sn: Sensor fault
n/a Indicates vacant lines—no additional alarms or warnings to display
Cursor flashes on the
A in ACK
System is requesting acknowledgment of the alarm
Press ENTER to acknowledge alarm, stop alarm horn, and remove asterisk (*) from
display
Note: Some faults immediately reactivate the horn
More <--->(1-3)
Indicates more pages of alarm information are available. To navigate pages, move the
cursor to the <-- or --> and press ENTER.
Wr*COOLANT TEMP HI
n/a
n/a
ACK MORE<-->(1-3)
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