Alarm List Menu SG+ 1.5

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+ 1.5 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 (100 through 604).

    • 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 Diagnosis

The Alarm List details the alarms, their causes, and possible diagnosis.

Alarm List
Alarm Code Alarm Text Alarm Type–Cause Diagnostics
A100 WATER TEMPERATURE HIGH

Operation

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.

  2. Check for faulty water temperature sensor.
A101 FAILED TO CRANK

Operation

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 starter motor.

  5. Check starter relay, circuit.
A102 FAILED TO START

PTI

Warning if the engine failed to enter running state or 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 glow plugs and circuit.
A104 ENGINE RPM BLOW LIMITS

Operation

General:

Warning If the engine speed gets below 800rpm for 10 sec.

PCM, Y-HPCR, Y-MECH Engine:

Warning if the engine is not capable to maintain high speed RPM.

Alarm if the engine is not capable to maintain low speed RPM.

  1. Check RPMs.

  2. Check RPM sensor.

  3. Check for overload on generator.

  4. Check restriction in fuel supply.

  5. Check for restricted air cleaner or air intake system
A105 LOW OIL LEVEL

Operation

If low oil level for 60 seconds.

  1. Check oil level.

  2. Check Oil Level Switch.

  3. Check circuits to Oil Level Switch.
A108 COOLANT LEVEL LOW

Operation

Coolant level low detected before engine start.

  1. Check coolant level.

  2. Check Coolant Level Sensor.

  3. Check circuits to Coolant Level.
A110 ENGINE STOP

Operation

Alarm If Engine is stopped to safe mode. Due to ECU shutdown codes.

 Connect ECU Test Tool to Read Engine Codes. Refer to Yanmar TNV Service TK55740 manual for troubleshooting guide.
A200 GENERATOR SHORT CIRCUIT

Operation

DSR has detected short circuit.

 See “Alternator Diagnosis”.
A201 GENERATOR EXTERNAL OVERLOAD

Operation

DSR has detected over excitation.

  1. Unplug load and attempt restart.

  2. See “Alternator Diagnosis”.
A301 ENGINE STOP LAMP

Operation

ECU stop lamp activated.

Connect ECU Test Tool to Read Engine Codes
A410 LINE VOLTAGE HIGH

Operation

Output voltage >500 VAC for 15 seconds

 See “Alternator Diagnosis”.
A411 LINE VOLTAGE LOW

Operation

Message, if in the start sequence the controller is not able see >300 VAC after the two run time in Low Speed.

Alarm if generator is not cable of producing min 200 VAC for 4 seconds.

 See “Alternator Diagnosis”.
A422 LINE FREQUENCY LOW

Operation / PTI

Line frequency <35 Hz for 5 seconds

 See “Alternator Diagnosis”.
A423 LINE FREQUENCY HIGH

Operation / PTI

Line frequency > 75 Hz for 5 seconds

 See “Alternator Diagnosis”.
A601 DIGITAL OUTPUT

Operation / PTI

No feedback when relay energized, RL1, 2, 3, 4, 5, 6.

  1. Look in event log to see what relay is failing.

  2. Test relay replace if bad.

  3. Test controller using manual function test, replace controller if relay is good.
A604 BATTERY CHARGER

PTI

Message if battery charger does not increase the battery voltage.

  1. Check battery.

  2. Check battery connections.

  3. Check ground connections from control box to battery.