Alarms Listed with Recommended Action to Take

TAKE IMMEDIATE ACTION ACT AS SPECIFIED      
Icon on the HMI display: Icon on the HMI display:      

The ‘recommended action to take’ is what you should do if a specific alarm occurs.


Many alarms do not require immediate actions on a large scale: After restart of Axle Power, the problem is often solved.

  • Restarting Energ-e Pack:

    • Long press ON/OFF button for more than 3 seconds.

    • Then short press ON/OFF button for 1-2 seconds.

1. ON/OFF Button

Another example is the so-called auto-clearing: Alarm A120 arises because of high temperatures. When the system has cooled down, the alarm automatically disappears from the HMI display. The problem and with it the alarm disappears together with the condition that caused the problem. In this case you just have to wait, till the system has cooled down.


In the table below, you find all alarms with the corresponding recommended action.

Alarm   Name on Display Recommendation
A118   Enable Off Failed Report alarm at end of day.
A119   Pers. Mem. Fail Report alarm at end of day.
A120   Controller Overheat Keep unit off for cool down.
A121   LV Voltage Low Connect to grid/shore power for battery recharging.
A121   LV Voltage Low Connect to grid/shore power for battery recharging.
A122   Send on CAN Failed Restart unit, report alarm.
A130   HVIL Open Not ready to start. Contact service.
A131   HV Isolation Low Not ready to start. Contact service.
A131   HV Isolation Low Report alarm at end of day.
A132   Iso Monitor Fault Performance reduced. Contact service.
A133   LVSupplyDcDcConvFault Report alarm at end of day.
A134   EnableLineAct.Fault Not ready to start. Contact service.
A140   TRU Power Reduced Report alarm at end of day.
A141   TRU power stopped Restart unit, report alarm.
A150   No Com. to Battery Restart unit, report alarm.
A151   No Com. Inverter Restart unit, report alarm.
A152   No Com. to HMI Restart unit, report alarm.
A153   No Com. to eAxle Ctrl Restart unit, report alarm.
A154   No Com. to BlueBox Restart unit, report alarm.
A155   No SOC Signal Restart unit, report alarm.
A180   ECU Missing on Bus Restart unit, report alarm.
A181   ECU Init Failure Not ready to start. Contact service.
A190   HV Bat. Overcharged Keep unit off. Contact service.
A190   HV Bat. Overcharged Disconnect unit from grid/shore power.
A191   HV Battery Empty Connect to grid/shore power for battery recharging.
A191   HV Battery Empty Connect to grid/shore power for battery recharging.
A192   HV Bat. Temp High Keep unit off for cool down.
A192   HV Bat. Temp High Keep unit off for cool down.
A193   HV Bat. Temp Low Connect to grid/shore power for battery heating.
A193   HV Bat. Temp Low Connect to grid/shore power for battery heating.
A195   Bat. Heater Fault Performance reduced. Contact service.
A196   B. Deep Discharged Not ready to start. Contact service.
A196   B. Deep Discharged Connect to grid/shore power for battery recharging.
A197   Bat. unbalanced Connect to grid/shore power for battery recharging.
A200   PDU Disch. Overheat Wait for unit to auto-restart.
A201   HV Bus Overvoltage Keep unit off. Contact service.
A250   Coolant Temp Low Move unit to warmer ambient.
A250   Coolant Temp Low Connect to grid/shore power for battery heating.
A251   Coolant Temp High Keep unit off for cool down.
A251   Coolant Temp High Performance reduced. Contact service.
A252   T-Sensor Not Working Report alarm at end of day.
A400   General Fault Keep unit off. Contact service.
A401   LV Supply Failure Restart unit, report alarm.
A402   Update Failed Keep unit off. Contact service.
A403   Module Ver. Mismatch Keep unit off. Contact service.
A404   Selftest Failed Keep unit off. Contact service.
A405   Interlock Failed Wait for unit to auto-restart.
A411   Intern Volt. Fail Report alarm at end of day.
A412   Internal Temp High Keep unit off for cool down.
A412   Internal Temp High Performance reduced. Contact service.
A423   DC Link Volt. Fail Restart unit, report alarm.
A424   IGBT Temp High Keep unit off for cool down.
A424   IGBT Temp High Performance reduced. Contact service.
A425   Drive Sync Failure Restart unit, report alarm.
A426   Shorepower Fault Performance reduced. Contact service.
A436   Overcurrent Fault Restart unit, report alarm.
A900   Disconnect Request Restart unit, report alarm.
A901   Precharge Overcurrent Restart unit, report alarm.
A902   Precharge dV Too High Restart unit, report alarm.
A903   No Com. to Sys. Ctrl. Restart unit, report alarm.
A904   Multiple Primary Bat. Keep unit off. Contact service.
A905   Cell Type Mismatch Keep unit off. Contact service.
A906   Sec. Bat. Com. Error Wait for unit to auto-restart.
A907   Sys. Shutdown Req. Restart unit, report alarm.
A908   No Bat. to Charge Restart unit, report alarm.
A909   No Bat. to Discharge Restart unit, report alarm.
A924   BMS Software Fault Wait for unit to auto-restart.
A925   BMS Timeout Msg. Wait for unit to auto-restart.
A926   BMS Timeout w. Flags Wait for unit to auto-restart.
A927   BMS Com. Error Wait for unit to auto-restart.
A928   Shutdown Req. Timeout Wait for unit to auto-restart.
A929   BMS Cell Com. Fault Wait for unit to auto-restart.
A930   BMS Ext. Com. Fault Wait for unit to auto-restart.
A931   Src. Addr. Conflict Keep unit off. Contact service.
A932   Precharge Timeout Wait for unit to auto-restart.
A933   No Charge Ack. Wait for unit to auto-restart.
A934   No Discharge Ack. Wait for unit to auto-restart.
A935   No BMS Chrg. Enable Wait for unit to auto-restart.
A936   No BMS Disch. Enable Keep unit off. Contact service.
A937   Fault Current Detect. Keep unit off. Contact service.
A938   BMS I-Sensor Fault Keep unit off. Contact service.
A939   BMS I-Sensor Failsafe Wait for unit to auto-restart.
A940   BMS Low Cell V Fault Connect to grid/shore power for battery recharging.
A941   BMS Open Cell V Fault Wait for unit to auto-restart.
A942   BMS V-Sensor Failsafe Wait for unit to auto-restart.
A943   Max Cell Voltage Hit Disconnect unit from grid/shore power.
A944   Min Cell Voltage Hit Connect to grid/shore power for battery recharging.
A945   Charge Overcurrent Disconnect unit from grid/shore power.
A946   Disch. Overcurrent Wait for unit to auto-restart.
A947   Unexp. Heater Curr Wait for unit to auto-restart.
A948   HVIL Circuit Open Keep unit off. Contact service.
A949   3rd T-Sensor Fault Wait for unit to auto-restart.
A950   BMS 12V Power Fault Wait for unit to auto-restart.
A951   BMSHardware Fault Keep unit off. Contact service.
A952   No Switching Ack +on Wait for unit to auto-restart.
A953   No Switching Ack +off Wait for unit to auto-restart.
A954   No Switching Ack -on Wait for unit to auto-restart.
A955   No Switching Ack -off Wait for unit to auto-restart.
A956   No Charge Enable Wait for unit to auto-restart.
A957   No Discharge Enable Wait for unit to auto-restart.
A958   No Com. to Sec. Ctrl Restart unit, report alarm.
A959   Pack Addr. Changed Report alarm at end of day.
A960   Weak Cell Detected Report alarm at end of day.
A961   No Heater Current Restart unit, report alarm.
A962   Heater I-Sensor Fault Restart unit, report alarm.
A966   HighSOCBat.avai Report alarm at end of day.
A967   LowerSOCBat.avai Report alarm at end of day.
A971   EEPROM Fault Report alarm at end of day.
A972   RAM Fault Report alarm at end of day.
A973   Software Fault Report alarm at end of day.
A974   Hardware Fault Report alarm at end of day.
A975   CAN Network Fault Restart unit, report alarm.
A976   No EBS Data Check EBS connector. Contact service.
A977   No Com. to Main Ctrl. Wait for unit to auto-restart.
A978   Init Failed Restart unit, report alarm.
A980   No Com. to eAxle Inv. Performance reduced. Contact service.
A981   Init Failed Performance reduced. Contact service.
A982   Config. Failed Performance reduced. Contact service.
A983   Validation Failed Performance reduced. Contact service.
A985   Temporary Fault Report alarm at end of day.
A986   Permanent Fault Performance reduced. Contact service.
A987   High Temperature Performance reduced.
A988   DC Voltage High Performance reduced. Contact service.
A989   DC Voltage Low Performance reduced. Contact service.
A990   No Enable Signal Performance reduced. Contact service.
A991   High Temperature Performance reduced.
A992   Bad Resolver Performance reduced.
A993   Generated Power Low Performance reduced. Contact service.
A994   Generator Not Turning Keep unit off, contact service.
A995   Torque Too High Report alarm at end of day.

There are a few alarms that appear in variants with different recommendations:
121, 131, 190, 191, 192, 193, 196, 250, 251, 412, 424.

In these events, look into the details of the alarms.


Important If you are uncertain how to react, you MUST contact your Thermo King or Frigoblock service representative.

For more detailed information refer to https://europe.thermoking.com/tools/tk-alarm-codes/.

Parent topic: Alarms