Alarm List Menu SG+

The Alarm List Menu displays alarms. Alarms are recorded in the controller memory to simplify unit diagnostic procedures. The alarms are listed in the reverse order of their occurrence. The Alarm LED flashes if a shutdown alarm is present. Enter the Alarm List Menu to view the and acknowledge the alarms.

Parent topic: SG+ Operating Instructions

Alarm Types

There are two types of alarms:

  • Delayed Restart Alarm: Delayed restart alarms indicate the unit has stopped temporarily because of a problem or to prevent damage to the unit. The unit will attempt to restart in 20 minutes. The display will show information about the unit in the message screen and the time left to the restart attempt. A delayed restart alarm becomes a shutdown alarm after the third failed restart attempt in an hour.

  • Shutdown Alarm: The Alarm LED flashes and unit stops. Shutdown alarms indicate the unit has been stopped to prevent damage to the unit. The condition must be corrected before restarting the unit.

Displaying and Acknowledging Alarms

Enter the Alarm List Menu to view and acknowledge the alarms as follows:

  1. Place the On/Off switch in the “ON” position.

  2. Press the ALARM key to enter the Alarm List Menu directly. Or Enter the Alarm List Menu through the Main Menu as follows:

    • Press the ENTER key or the ESCAPE key to enter the Main Menu, if necessary.

    • Press the UP or DOWN key to scroll up or down through the Main Menu to the Alarm List Menu.

    • Press the ENTER key to enter the Alarm List Menu.

  3. The Alarm List Menu will appear on the display. It shows the most recent alarm and the following information:

    • The alarm code (A101 through A126)

    • The position of the alarm in the list of recorded alarms. For example, 1/2 means alarm one of two.

    • The alarm text.

    • The alarm status (Active or Acknowledged).

    • Write down the alarm code and the alarm text.

  4. Write down the alarm code and the alarm text.

  5. Press the ENTER key to acknowledge the alarm. The Alarm LED will continue flashing until the active alarms (and messages) have been acknowledged.

  6. Press the DOWN key to scroll down to the next alarm, if necessary.

  7. Write down the alarm code and the alarm text.

  8. Press the ENTER key to acknowledge the alarm.

  9. Repeat steps 6 through 8 until all active alarms have been written down and acknowledged.

  10. Press the ESCAPE key to return to the Main Menu.

Alarm List Menu

Alarm Diagnosis

The Alarm List on the following pages lists the alarms, their causes, and possible diagnosis.

Alarm List
Alarm Code Alarm Text Alarm Type–Cause Diagnostics
A101 WATER TEMPERATURE HIGH

Delayed Restart Alarm–Engine is running and water temperature is above 107 C (225 F) for 5 seconds.

  • Engine then stops and then attempts to restart.

  1. Check for cause of engine overheating:

    • Check engine coolant level.

    • Check water pump belt.

    • Check radiator for airflow and coolant flow restrictions.
A102 ENGINE FAILED TO CRANK Alarm if Engine did NOT achieve 800 rpm within 12 seconds.
Becomes a Shutdown Alarm when number of restart attempts is greater than number of “Crank Restarts” set in Configuration Menu.

  1. Defective battery, load test battery.

  2. Check Battery Charger.

  3. Check ground connections at block.

  4. Check Battery Charger.

  5. Check stater motor.
A103 ENGINE FAILED TO START Delayed Restart Alarm–Engine failed to crank.
Becomes a Shutdown Alarm when number of restart attempts is greater than number of “Crank Restarts” set in Configuration Menu.Warning if the engine reports error during the start sequence.

  1. Check fuel level.

  2. Check fuel pump, and fuel system both electrically and mechanically.

  3. In cold ambient temperatures check for fuel gelling.

  4. Check for restricted air cleaner or air intake system.

  5. Check intake air heater.
A104 RL2 (FUEL H) FEEDBACK FAILURE Shutdown Alarm–No feedback when relay is energized, or feedback when relay is not energized.

Check RL2 (Fuel Hold) relay.
A107 EXTERNAL OVERLOAD Shutdown Alarm–Engine restart if output voltage is short-circuited.

  1. Unplug load and attempt restart.

  2. Check alternator field circuit.

  3. Check alternator output circuit.

  4. Check external generator controller electrical system.
A108 ENGINE NOT RUNNING REASON UNKNOWN

Delayed Restart Alarm - Genset stops for restart without any reason with oil pressure but zero RPM when engine should be running.

Engine will attempt to restart in 20 minutes.

  1. Check fuel level.

  2. Check oil level.

  3. Check RPM Sensor
A109 LOW OIL LEVEL If low oil level for 60 seconds.

  1. Check oil level.

  2. Check Oil Level Switch.

  3. Check circuits to Oil Level Switch.
A110

RPM BELOW LIMIT

 Shutdown Alarm–Engine stops for restart if speed is below limit i.e, Engine speed is below 1350 RPM.

  1. Check engine speed.

  2. Check RPM sensor.
A111

FAILED TO START LOW BATTERY

 The controller is resetting 3 times during crank caused by low voltage on the battery. The low voltage could be controller not charging the battery, defective battery or cables.

  1. Defective battery, load test battery.

  2. Check Battery Charger.

  3. Check ground connections at block.
A113

COOLANT LEVEL LOW

Coolant level is low.

  1. Check coolant level.

  2. Check Coolant Level Sensor.

  3. Check circuits to Coolant Level Sensor.
A115 EXCITER CONTROL UNIT SHUTDOWN External controller has not responded within 5 seconds.

  1. Check wiring to exciter controller.

  2. See “Alternator Diagnosis”.
A116 ENGINE CONTROL UNIT SHUTDOWN The engine is restarted if communication has been lost with the engine controller.
External controller has not responded within 5 seconds.		 Check wiring to engine controller.
A118 ENGINE STOP LAMP Engine stop lamp activated Connect ECU Test Tool to read codes.
A119 LOW OIL PRESSURE Low oil pressure message active. Connect ECU Test Tool to read codes.
A120 OUTPUT VOLTAGE HIGH Output voltage above 500 volts over 15 seconds See “Alternator Diagnosis”.
A121 ENGINE PROTECT LAMP Engine degraded mode (speed limitation) or starter relay defect. Connect ECU Test Tool to read codes.
A122 GENERATOR UNIT ERROR Over excitation or short circuit See “Alternator Diagnosis”.
A123 COOLANT FAN ERROR Coolant fan klixon is open and coolant temperature is above limit.

  1. Check coolant fan klixon.

  2. Check circuits to coolant fan klixon.
A124 FUEL TANK EMPTY Monitoring the engine P-code for low fuel delivery pressure will activate the alarm when the engine is about to shut down due to out of fuel condition. Check fuel level
A125 TIMING BELT EXPIRED Timing belt needs replacement due to years of operation or engine run hours. Replace engine timing belt.
A126 OUTPUT FREQUENCY FAILURE Output frequency above 99Hz for 5 seconds See “Alternator Diagnosis”.