Atlas Copco
Atlas Copco Standby Generators Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
Advertisements
E001
Generator will not start; the controller shows E001 and immediately aborts cranking.
Emergency Stop Active / Safety Chain Open
E002
Generator shuts down during operation; the controller displays E002 Low Oil Pressure.
Low Oil Pressure Shutdown
E003
Generator stops and displays E003 High Engine Temperature on the Atlas Copco controller.
High Coolant Temperature Shutdown
E004
Generator shuts down shortly after starting; the controller shows E004 Overspeed.
Engine Overspeed Shutdown
E005
The controller displays E005 Underspeed, and the generator trips off load.
Engine Underspeed / Underfrequency Trip
E006
The Atlas Copco controller shows E006 Low Fuel Level or Fuel Level Alarm; the generator will not start in auto mode.
Low Fuel Level Lockout
E007
Generator shuts down and displays E007 Low Coolant Level.
Low Coolant Level Shutdown
E008
The controller indicates E008 Battery Voltage Low; the generator fails to crank or cranks slowly.
Low DC Battery Voltage Alarm
E009
The Atlas Copco controller shows E009 Battery Voltage High.
High DC Battery Voltage Alarm
E010
The generator fails to start, and the controller displays E010 Start Failure after several crank attempts.
Start Failure / No-Start Condition
E011
The controller shows E011 Phase Sequence Error when attempting to transfer load.
Incorrect Phase Rotation / Phase Sequence Fault
E012
The Atlas Copco controller indicates E012 Overvoltage and trips the generator breaker.
Generator Overvoltage Protection Trip
E013
The controller shows E013 Undervoltage, and the generator breaker will not close.
Generator Undervoltage Protection Trip
E014
The Atlas Copco controller displays E014 Overcurrent / Overload and trips the generator breaker.
Overcurrent / Overload Trip
E015
The controller shows E015 Earth Fault / Ground Fault, and the generator trips off load.
Earth Fault Protection Trip
E016
The Atlas Copco controller indicates E016 CAN Communication Error with the engine ECU.
CAN Bus Communication Fault
E017
The controller shows E017 Oil Temperature High, and the generator shuts down under load.
High Oil Temperature Shutdown
E018
The Atlas Copco controller displays E018 Air Filter Restriction / Intake Pressure High.
Air Intake Restriction Alarm
E019
The controller shows E019 Fuel Water Level High / Water in Fuel.
Water in Fuel Alarm
E020
Atlas Copco controller indicates E020 Service Due / Maintenance Alarm
Scheduled Maintenance Reminder
E021
Controller shows E021 Coolant Heater Failure / Engine Heater Fault
Engine Block Heater Fault
E022
Atlas Copco controller displays E022 Mains Failure Detection Fault
Mains Sensing / Utility Voltage Detection Fault
E023
Controller shows E023 Generator–Mains Sync Error during automatic transfer
Synchronization Failure
E024
Atlas Copco controller indicates E024 Glow Plug Fault (on equipped diesel engines)
Glow Plug Circuit Fault
E025
Controller shows E025 Crank Disconnect Fault, starter remains engaged too long or disengages too early
Crank Termination / Start Sequence Fault
E026
Atlas Copco controller displays E026 Oil Level Low (if equipped with level sensor)
Low Oil Level Alarm
E027
Controller shows E027 Exhaust Temperature High
High Exhaust Gas Temperature Alarm
E028
Atlas Copco controller indicates E028 Alternator Temperature High
Alternator Overtemperature Alarm
E029
Controller shows E029 ATS Feedback Fault / Breaker Position Mismatch
Breaker / ATS Position Feedback Error
E030
Atlas Copco controller displays E030 Sensor Supply Fault / 5V Reference Error
Sensor Supply Voltage Fault
Symptom
Automatic Transfer Switch (ATS) does not transfer to the generator during mains failure, but the generator runs.
ATS Fails to Transfer to Generator
Symptom
Blue smoke from exhaust, especially under light load
Oil Burning
Symptom
Corrosion is visible on battery terminals and nearby metal surfaces.
Battery Terminal Corrosion
Symptom
Excessive black smoke from exhaust during operation
Rich Combustion / Overfueling
Symptom
Excessive white smoke from exhaust on startup that continues after warm‑up
Incomplete Combustion / Possible Coolant Ingress
Symptom
Generator coolant level drops over time with no visible external leaks.
Unexplained Coolant Loss
Symptom
Generator cooling fan does not run, or airflow through the radiator seems weak.
Cooling Fan / Airflow Fault
Symptom
Generator cranks normally but will not start, no error code displayed on Atlas Copco controller
No‑Start Condition Without Logged Fault
Symptom
Generator enclosure is excessively hot inside, even at moderate load.
Poor Enclosure Ventilation
Symptom
Generator enclosure or base frame shows signs of oil leakage.
External Engine Oil Leak
Symptom
Generator frequency is consistently low or high (e.g., 47–48 Hz or 52–53 Hz) at steady load.
Incorrect Engine Speed / Frequency
Symptom
Generator output voltage fluctuates noticeably under steady load; lights flicker.
Unstable Voltage Regulation
Symptom
Generator produces unusual loud knocking or metallic noise from engine
Abnormal Engine Knock
Symptom
Generator starts but immediately stalls when load is applied, no specific error code
Load‑Induced Stalling
Symptom
Generator vibrates excessively during operation, causing enclosure to rattle
Excessive Vibration
Symptom
Moisture or water found inside the generator enclosure, with signs of rust on components.
Water Ingress / Condensation
Symptom
Strong diesel smell around generator even when not running
Fuel Vapor / Odor Issue
Symptom
The generator battery repeatedly goes flat between test runs.
Chronic Battery Discharge
Symptom
The generator does not start automatically on mains failure, but starts manually from the controller.
Auto Start Function Failure
Symptom
Visible fuel leak under or around Atlas Copco standby generator enclosure
External Fuel Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E001 |
Generator will not start; the controller shows E001 and immediately aborts cranking.
|
Emergency Stop Active / Safety Chain Open | View Details |
| E002 |
Generator shuts down during operation; the controller displays E002 Low Oil Pressure.
|
Low Oil Pressure Shutdown | View Details |
| E003 |
Generator stops and displays E003 High Engine Temperature on the Atlas Copco controller.
|
High Coolant Temperature Shutdown | View Details |
| E004 |
Generator shuts down shortly after starting; the controller shows E004 Overspeed.
|
Engine Overspeed Shutdown | View Details |
| E005 |
The controller displays E005 Underspeed, and the generator trips off load.
|
Engine Underspeed / Underfrequency Trip | View Details |
| E006 |
The Atlas Copco controller shows E006 Low Fuel Level or Fuel Level Alarm; the generator will not start in auto mode.
|
Low Fuel Level Lockout | View Details |
| E007 |
Generator shuts down and displays E007 Low Coolant Level.
|
Low Coolant Level Shutdown | View Details |
| E008 |
The controller indicates E008 Battery Voltage Low; the generator fails to crank or cranks slowly.
|
Low DC Battery Voltage Alarm | View Details |
| E009 |
The Atlas Copco controller shows E009 Battery Voltage High.
|
High DC Battery Voltage Alarm | View Details |
| E010 |
The generator fails to start, and the controller displays E010 Start Failure after several crank attempts.
|
Start Failure / No-Start Condition | View Details |
| E011 |
The controller shows E011 Phase Sequence Error when attempting to transfer load.
|
Incorrect Phase Rotation / Phase Sequence Fault | View Details |
| E012 |
The Atlas Copco controller indicates E012 Overvoltage and trips the generator breaker.
|
Generator Overvoltage Protection Trip | View Details |
| E013 |
The controller shows E013 Undervoltage, and the generator breaker will not close.
|
Generator Undervoltage Protection Trip | View Details |
| E014 |
The Atlas Copco controller displays E014 Overcurrent / Overload and trips the generator breaker.
|
Overcurrent / Overload Trip | View Details |
| E015 |
The controller shows E015 Earth Fault / Ground Fault, and the generator trips off load.
|
Earth Fault Protection Trip | View Details |
| E016 |
The Atlas Copco controller indicates E016 CAN Communication Error with the engine ECU.
|
CAN Bus Communication Fault | View Details |
| E017 |
The controller shows E017 Oil Temperature High, and the generator shuts down under load.
|
High Oil Temperature Shutdown | View Details |
| E018 |
The Atlas Copco controller displays E018 Air Filter Restriction / Intake Pressure High.
|
Air Intake Restriction Alarm | View Details |
| E019 |
The controller shows E019 Fuel Water Level High / Water in Fuel.
|
Water in Fuel Alarm | View Details |
| E020 |
Atlas Copco controller indicates E020 Service Due / Maintenance Alarm
|
Scheduled Maintenance Reminder | View Details |
| E021 |
Controller shows E021 Coolant Heater Failure / Engine Heater Fault
|
Engine Block Heater Fault | View Details |
| E022 |
Atlas Copco controller displays E022 Mains Failure Detection Fault
|
Mains Sensing / Utility Voltage Detection Fault | View Details |
| E023 |
Controller shows E023 Generator–Mains Sync Error during automatic transfer
|
Synchronization Failure | View Details |
| E024 |
Atlas Copco controller indicates E024 Glow Plug Fault (on equipped diesel engines)
|
Glow Plug Circuit Fault | View Details |
| E025 |
Controller shows E025 Crank Disconnect Fault, starter remains engaged too long or disengages too early
|
Crank Termination / Start Sequence Fault | View Details |
| E026 |
Atlas Copco controller displays E026 Oil Level Low (if equipped with level sensor)
|
Low Oil Level Alarm | View Details |
| E027 |
Controller shows E027 Exhaust Temperature High
|
High Exhaust Gas Temperature Alarm | View Details |
| E028 |
Atlas Copco controller indicates E028 Alternator Temperature High
|
Alternator Overtemperature Alarm | View Details |
| E029 |
Controller shows E029 ATS Feedback Fault / Breaker Position Mismatch
|
Breaker / ATS Position Feedback Error | View Details |
| E030 |
Atlas Copco controller displays E030 Sensor Supply Fault / 5V Reference Error
|
Sensor Supply Voltage Fault | View Details |
| – |
Automatic Transfer Switch (ATS) does not transfer to the generator during mains failure, but the generator runs.
|
ATS Fails to Transfer to Generator | View Details |
| – |
Blue smoke from exhaust, especially under light load
|
Oil Burning | View Details |
| – |
Corrosion is visible on battery terminals and nearby metal surfaces.
|
Battery Terminal Corrosion | View Details |
| – |
Excessive black smoke from exhaust during operation
|
Rich Combustion / Overfueling | View Details |
| – |
Excessive white smoke from exhaust on startup that continues after warm‑up
|
Incomplete Combustion / Possible Coolant Ingress | View Details |
| – |
Generator coolant level drops over time with no visible external leaks.
|
Unexplained Coolant Loss | View Details |
| – |
Generator cooling fan does not run, or airflow through the radiator seems weak.
|
Cooling Fan / Airflow Fault | View Details |
| – |
Generator cranks normally but will not start, no error code displayed on Atlas Copco controller
|
No‑Start Condition Without Logged Fault | View Details |
| – |
Generator enclosure is excessively hot inside, even at moderate load.
|
Poor Enclosure Ventilation | View Details |
| – |
Generator enclosure or base frame shows signs of oil leakage.
|
External Engine Oil Leak | View Details |
| – |
Generator frequency is consistently low or high (e.g., 47–48 Hz or 52–53 Hz) at steady load.
|
Incorrect Engine Speed / Frequency | View Details |
| – |
Generator output voltage fluctuates noticeably under steady load; lights flicker.
|
Unstable Voltage Regulation | View Details |
| – |
Generator produces unusual loud knocking or metallic noise from engine
|
Abnormal Engine Knock | View Details |
| – |
Generator starts but immediately stalls when load is applied, no specific error code
|
Load‑Induced Stalling | View Details |
| – |
Generator vibrates excessively during operation, causing enclosure to rattle
|
Excessive Vibration | View Details |
| – |
Moisture or water found inside the generator enclosure, with signs of rust on components.
|
Water Ingress / Condensation | View Details |
| – |
Strong diesel smell around generator even when not running
|
Fuel Vapor / Odor Issue | View Details |
| – |
The generator battery repeatedly goes flat between test runs.
|
Chronic Battery Discharge | View Details |
| – |
The generator does not start automatically on mains failure, but starts manually from the controller.
|
Auto Start Function Failure | View Details |
| – |
Visible fuel leak under or around Atlas Copco standby generator enclosure
|
External Fuel Leak | View Details |
No matching codes found
Advertisements