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General Information
Non-shutdown Alarms
•
More urgent than warnings
•
Indicate a system parameter that is approaching or has exceeded a safe operating limit
•
Do not cause the unit to shut down
•
Require some form of action, such as inspection or close monitoring
•
Automatically clear when 1) conditions causing the alarm are corrected and 2) the alarm is acknowledged on the
H-100 control panel
Shutdown Alarms
•
Indicate a system fault that, if allowed to continue without immediate inspection or correction, will result in damage
to the unit.
•
Immediately shut down the unit, protecting the generator from damage.
•
Shutdown alarms clear only after they have been acknowledged, the alarm condition has been resolved, the
control power switch has been cycled from AUTO or MAN to OFF, and the alarm is no longer active.
Emissions Alarms (DTCs)
Diagnostic trouble codes (DTCs) are special alarms equipped in generators that are required by the Environmental
Protection Agency (EPA) to contain on-board diagnostics (OBD). This unit is equipped with a DTC alarm, which
activates when an emissions-related fault is present. The DTC supported by the generator is P0134, which indicates
the oxygen sensor has not toggled between indicating lean and indicating rich for at least one minute.
Diagnostic trouble codes do not generate audible alarms. They display the Malfunction Indicator Light (MIL) message
CHECK ENGINE on the H-100 control panel display
Diagnostic trouble codes automatically clear after three run cycles (three times fully starting the unit and then
completely shutting it down) in which no DTC conditions are active. A GMPASD can also clear the DTC through
GenLink.
See the H-100 Control Panel Operations Manual for more information.
General Fault Response Procedure
Each time a fault becomes active, follow this procedure:
1. Take note of what faults are displayed, as acknowledging the faults will remove any nonactive faults from the
display. Also, turning the key switch from AUTO or MAN to OFF acknowledges the faults.
2. Carefully read each line of the Alarm/Warning Page to determine what fault condition is present. If there is
more than one fault, the most recent is listed first.
3. Press ENTER to acknowledge the fault, silence the alarm horn, and switch the Alarm LED from flashing to On.
4. Press MENU to display the main menu navigation screen.
5. Depending on the fault condition, use the arrow keys to toggle to the corresponding area and press ENTER.
6. Observe the information displayed for the affected area.
7. Determine corrective action necessary.
8. When the fault condition is cleared, the ALARM LED switches off.
24
(Figure
DT Check Engine
DT P0134-02 Sense
n/a
ACK
MORE<-->(1-3)
Figure 17 - Emissions Alarm
MGG100M Operating Manual
17).
02259
36833 C
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