This article lists fault (F_ _ _ ) and error (E_ _ _ ) codes on these chargers. Most of these will be reported over CAN and logged. Not all will be displayed on chargers with a user interface. If a unit is not functioning and nothing is indicated or logged, check and cycle both AC and DC. If this condition persists, replace the charger.
Please see the attached .pdf document version of the Delta-Q Fault and Error Codes List for IC/RC/ICL Series chargers.
Fault Codes:
| Type | Code | Description | Troubleshooting and/or Recommended Actions |
| Fault | F001 | DC-DC Circuit Excessive Leakage | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F002 | PFC Circuit Excessive Leakage | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F003 | PFC Circuit Boost Failure | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F004 | Battery Current Sense Circuit Failure | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F005 | DC Relay Circuit - Rationality | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F006 | Battery Current Sense Circuit Rationality | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F007 | DC-DC Circuit Failure | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F008 | Not Used | |
| Fault | F009 | Internal Software Exception | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F010 | Fault on Connected Charger | Stackable and VCIM systems: Check connected chargers individually for faults. |
| Fault | F016 | Internal Aux Relay Circuit Fault | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F017 | Control Pilot Voltage Range Issue | Check EVSE for proper operation. Check control pilot wire for damage. Possible internal hardware fault. If persists, replace the unit. |
| Fault | F018 | Aux Output Fuse Circuit Failure | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F019 | Aux Output Voltage too High | Check AUX DC connected to correct voltage battery (12V or 24V). Possible internal hardware fault. If persists, replace the unit. |
| Fault | F020 | Internal Aux DCDC Short Circuit | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F021 | Internal Temperature Sensor Fault | Internal charger fault. Remove AC and battery for minimum 30 MINUTES and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F022 | Internal Aux DCDC Circuit Failure | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F023 | PFC Circuit Performance Issue Detected | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F024 | Internal Aux DCDC Failed to Turn On | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
| Fault | F025 | Internal Hardware Clock Fault | Internal charger fault. Remove AC and battery for minimum 30 seconds and retry charger. If it fails again, do not continue to use the charger - replace the unit. |
Error Codes:
| Type | Code | Description | Troubleshooting and/or Recommended Actions |
| Alarm | E001 | High Battery Voltage Error | Battery Voltage is too high to start charge. Check the battery voltage and cable connections. Check battery size and condition. This error will automatically clear once the condition has been corrected. |
| Alarm | E002 | Low Battery Voltage Error | Battery Voltage is too low to start charge. Check the battery voltage and cable connections. Check battery size and condition. This error will automatically clear once the condition has been corrected. |
| Alarm | E003 | Charge Timeout | Charge Timeout caused by battery pack not reaching required voltage within safe time limit. Possible causes: Charger output reduced due to high temperatures or low AC voltage. Poor battery health. Very deeply discharged battery. Poorly connected battery. Extra loads. Battery too large for algorithm selected. Possible solutions: Improve cooling air flow. Check for low AC voltage. Replace battery pack. Check DC connections. This error will automatically clear once the charger is reset by cycling DC. |
| Alarm | E004 | Battery Defective | Battery could not be trickle charged up to the minimum voltage. Check for shorted or damaged cells. Check battery pack voltage matches charger voltage. Replace battery pack. Check DC connections. This error will automatically clear once the charger is reset by cycling DC. |
| Alarm | E005 | Algorithm Specific Alarm | Contact Support for details if this alarm occurs. |
| Alarm | E006 | Battery Temperature Sensor Short Circuit | Check temperature sensor wiring for short to ground then restart the charge. |
| Alarm | E007 | Charge Amp-Hour Limit Exceeded | Safety limit exceeded. Possible causes: Poor battery health. Very deeply discharged battery. Poorly connected battery. High parasitic loads on battery while charging. Possible solutions: Replace battery pack. Check DC connections. Disconnect parasitic loads. This error will automatically clear once the charger is reset by cycling DC. |
| Alarm | E008 | Battery Temperature Out of Range | Possible battery temperature sensor error. Check temperature sensor and connections. Reset charger. This error will automatically clear once the condition has been corrected. |
| Alarm | E009 | Battery Temperature Changing Too Quickly | Check loose/corrosion on output cable or bad configuration if the battery temperature sensor is used for charge control. |
| Alarm | E010 | Charger Output Short Circuit | Charger DC terminals in contact with each other while charging. Check for short circuit in charging and battery cables. |
| Alarm | E011 | Charger Disabled By External Command | Charger has been disabled by an external controller over the CANbus network. This error is logged in the data log and the charger sends out a CAN message. It is not displayed. |
| Alarm | E012 | Charger Output Reverse Polarity | Battery is connected incorrectly. Check the battery connections. This error will automatically clear once the condition has been corrected. |
| Alarm | E013 | Charger Output Current Not Accepted | Battery voltage is detected but the charger is unable to output current. This is normally caused by an electrical device connected between the charger and the battery which passes through voltage but not current. Poor connections can also cause this. Ensure the charger is properly connected to approved equipment. This error will automatically clear once the charger is reset by cycling DC or AC. |
| Alarm | E014 | Configuration Error - Charger Cannot Support Number of Battery Cells | The charger will need to be reflashed to the correct settings. |
| Alarm | E015 | Configuration Error - Algorithm Does Not Support Target Voltage Scaling | The charger will need to be reflashed to the correct settings. |
| Alarm | E016 | Charger Programming Failure - General | Retry by removing and re-inserting the USB drive. Ensure correct files are being used. Ensure the USB Flash Drive is properly formatted (FAT recommended) and retry. Try a different USB drive. If error persists, contact Support. |
| Alarm | E017 | USB Operation Failure | This could be caused by a faulty USB drive or connections. If it persists, try a different USB drive. |
| Alarm | E018 | Charger Programming Failure - Corruption | Retry by removing and re-inserting the USB drive. Ensure correct files are being used. Ensure the USB Flash Drive is properly formatted (FAT recommended) and retry. Try a different USB drive. If error persists, contact Support. |
| Alarm | E019 | Charger Programming Failure - Incorrect Software | The charger hardware does not support the software version being programmed. Existing software is left running. Contact Support. |
| Alarm | E020 | No Active Algorithm Selected | Select a charge profile using the button or reflash the charger. |
| Alarm | E021 | High Battery Voltage Error While Charging | Battery Voltage is too high as detected by the algorithm. Check the battery voltage and cable connections. This error will automatically clear once the condition has been corrected. |
| Alarm | E022 | Low Battery Voltage Error While Charging | Battery Voltage is too low as detected by the algorithm. Check the battery voltage and cable connections. This error will automatically clear once the condition has been corrected. |
| Alarm | E023 | AC Voltage High | AC voltage is too high. Connect charger to an AC source that provides stable AC between 85 - 270 VAC / 45-65 Hz. This error will automatically clear once the condition has been corrected. |
| Alarm | E024 | Charger Initialization Failure | The charger has failed to turn on properly. Disconnect AC and battery for 30 seconds before retrying. If Error persists, contact Support. |
| Alarm | E025 | AC Voltage Unstable and Low | AC source is unstable. Could be caused by undersized generator and/or severely undersized/long AC cables. Connect charger to an AC source that is stable and between 85 - 270 VAC / 45-65 Hz. This error will automatically clear once the condition has been corrected. |
| Alarm | E026 | USB Script Failure | Retry by removing and re-inserting the USB drive. Ensure correct files are being used. Ensure the USB Flash Drive is properly formatted (FAT recommended) and retry. Try a different USB drive. If error persists, contact Support. |
| Alarm | E027 | USB Over Current Fault | USB hardware overcurrent protection has been tripped. Remove and reinsert USB device. If the condition persists then try a different, brand-name USB device. |
| Alarm | E028 | Incompatible Algorithm | The selected charging profile is incompatible with the charger software. Update charger software or select a different charging profile. |
| Alarm | E029 | CAN Bus Physical Layer Error | CAN bus network error. Check the physical CAN connector, wiring, and other CAN modules for correct functioning. Check termination is around 60 ohms. |
| Alarm | E030 | Battery Reporting Error | Charger has received an error from the battery module or it is in a pre-operational state. |
| Alarm | E031 | Internal Charger Power Supply Error | Internal supply rail error detected. Remove AC and battery for minimum 30 seconds and retry charger. If the problem persists contact Support. |
| Alarm | E032 | Missing CAN Messages | CAN heartbeats or PDOs were received and then timed out. Check other CAN devices for function. |
| Alarm | E033 | Configuration Error - Target Voltage Too High | The charger configuration is asking for more voltage than the charger can deliver. Charger reflash is required to correct this issue. |
| Alarm | E034 | Configuration Error - Battery Capacity Not Supported | Charger is configured to with capacity scaling but algorithm selected does not support this feature. Select a scalable algorithm or reflash the charger. |
| Alarm | E035 | Configuration Error - Target Voltage Too Low | The charger configuration is asking for voltage below 20% of the charger nominal. Charger reflash is required to correct this issue. |
| Alarm | E036 | Battery Temperature Open Circuit | Check if sensor is connected correctly. Install a temperature sensor. Change to an algorithm that does not require a temperature sensor. |
| Alarm | E037 | Charger Programming Failure - CAN | Re-try CANOpen download or re-program using the USB |
| Alarm | E038 | Cooling Fan Error | Inspect fan to make sure the power wires are connected and the fan blades are not obstructed by debris. |
| Alarm | E039 | Button Stuck Down | Inspect for objects on or near the button or damage to the button. If alarm persists, replace charger. |
| Alarm | E040 | Cooling Fan Voltage Too Low | Ensure that the the fan is not stuck or drawing excess current, and that the correct fan part is installed. |
| Alarm | E041 | Software Error - General | Software internal configuration error, ensure configuration settings are correct and reflash charger |
| Alarm | E042 | Configuration Error - CAN | Software internal configuration error, ensure configuration settings are correct and reflash charger |
| Alarm | E043 | CANopen PDO CRC Mismatch | Power cycle all CAN nodes and charger. Error will clear once sequence counter updates. Reflash charger if this persists. CAN only - not shown on display |
| Alarm | E044 | CANopen PDO Sequence Count Not Changing | Power cycle all CAN nodes and charger. Error will clear once sequence counter updates. Reflash charger if this persists. CAN only - not shown on display |
| Alarm | E045 | Charger Output Open Circuit | Charger did not see enough battery voltage. Connect the battery in order to start charging. This alarm is only displayed if configured. |
| Alarm | E046 | CAN - Invalid PDO Length | Power cycle all CAN nodes and charger. Error will clear once sequence counter updates. Reflash charger if this persists. |
| Alarm | E047 | Reserved | For internal use |
| Alarm | E048 | Stackable Charging - Multiple Masters | Check the wiring harness to ensure only one charger has pins populated to be parallel charging master. |
| Alarm | E049 | Stackable Charging - More Secondary Chargers Than Expected | Make sure the right number of chargers are on the bus for this fixed configuration. Reset chargers to check if this alarm persists. |
| Alarm | E051 | Stackable Charging - No Master | Master device may be disconnected or powered down. Check wiring harness. Check configuration of devices. Reflash Master charger |
| Alarm | E063 | Stackable Charging - Incompatible Secondary Charger(s) | Query the master to identify which secondary has the bad configuration or interface version. |
| Alarm | E050 | Stackable Charging - Single Charger Detected Stackable Messages | Check the configuration of all chargers that are sharing this bus. |
| Alarm | E052 | Stackable Charging - Fewer Secondary Chargers Than Expected | Secondary chargers may be disconnected or powered down. Check the wiring and power to the secondary chargers. The alarm will automatically clear when the missing chargers come back online. |
| Alarm | E054 | Stackable Charging - Secondary Charger Reverse Polarity | Check the DC connections of all chargers and the battery. |
| Alarm | E055 | Stackable Charging - Secondary Charger DC Voltage Mismatch | Either they are disconnected from each other or there is an excessive series resistance which may result in cable overheating. Check DC output wiring of the entire stack. The problem might be due to loose or corroded connections in the cabling. |
| Alarm | E053 | Stackable Charging - Communications Lost With Secondary Charger(s) | Check wiring harness and power to secondary chargers. Check to see if Secondary Chargers are issuing faults of their own. |
| Alarm | E057 | Reserved | Customer specific implementation |
| Alarm | E058 | Reserved | Customer specific implementation |
| Alarm | E059 | J1939 Address Conflict | Investigate and disconnect non-compliant device from the bus. Alternatively change the charger's configuration to exclude the conflicted address from its allowed range of addresses. |
| Alarm | E060 | CAN Communications Never Received | Charger is waiting for this message to start. Check CAN cabling. Ensure nodes configured to send expected messages |
| Alarm | E061 | CAN Battery Current Report Mismatch | The charger compares the Battery written current with its output current. Check that the right current is being sent to the charger. Check if the output cable has a parallel branch. |
| Alarm | E062 | CAN Battery Voltage Report Mismatch | The charger compares the Battery written voltage with its output voltage. Check that the correct voltage is being sent to the charger. Check that the output cable resistance matches the charger setting. Check for other sources of voltage drop. |
| Alarm | E056 | Stackable Charging - Secondary Charger Fault or Alarm | Check for alarms and faults reported by the secondary chargers. |
| Alarm | E064 | J1939 Address - Charger Failed to Claim | The most likely cause of this problem is that two or more chargers, configured for the same fixed address, have been connected to the same bus in error. Alternatively there could be a configuration issue and the addresses available to the charger are already being used by other customer devices on the bus. |
| Alarm | E065 | J1939 Address - Other Device Failed to Claim | Read SPN 611 from the charger(s) that has raised this alarm. This will contain the 64-bit J1939 "Name" of the device that could not claim its address (see J1939-81 Network Management, Feb 2016, Section 4.2.1 ). If this device is another Delta-Q charger (manufacturer code 800, function Id 141) and this is a stackable charging system then possible causes include: i) Incorrectly configured chargers ii ) Address conflicts exist between the charger and other devices on the bus iii ) Master/Secondary wiring fault. The alarm will be cleared on charger reset - but may immediately trigger if the address conflict persists. |
| Alarm | E066 | Battery Voltage Higher Than Configured Maximum | Check if the charger is connected to the right battery, or the maximum voltage configured is too low. |
| Alarm | E067 | CAN Physical Layer Error - Before Messages Received | CANbus network error. Check the physical CAN connector, electrical bus conditions and other CAN modules for correct functioning. For example check termination resistance is approximately 60ohms. |
| Alarm | E068 | Missing CAN Messages While Not Charging | Monitored messages (Heartbeat, PGN, PDO) lost while charger output off. Check the networked CANbus device(s) for correct function and messages. |
| Alarm | E069 | Accessory Power Output Overcurrent | Accessory Power Output (APO) has too much load, please check circuits attached to Accessory Power Output (APO) for shorts or other circuit faults. |
| Alarm | E087 | Charger Error Monitor Triggered | Internal error has been flagged due to not generating the regular "watchdog" message. Check for low AC voltage or other abnormal conditions. If this error re appears, replace the charger. |
| Alarm | E088 | Charger Error Monitor Not Started | Internal error has been flagged due to loss of communications internally within the charger. Check for abnormal conditions. If this error re-appears, replace the charger. |
| Alarm | E089 | Aux DC Output Error | Lost a condition to operate the Aux DC Output. Check: Aux battery voltage between 9.7-14.5V, Traction battery voltage in range (see Design Guide). Could also be internal hardware failure causing Aux DC Output to be off when commanded on by software or key switch. |
| Alarm | E090 | EVSE Failed To Provide AC | Charger is communication with EVSE but it is not providing AC. Check EVSE is connected to AC power. Check cables and connections. Check EVSE hardware or try another EVSE. |
| Alarm | E091 | EVSE Failed To Turn Off AC | Charger is communicating with EVSE but it is not turning off AC. Check EVSE contactor for welding. Check cables and connections. If persists, try another EVSE. |
| Alarm | E092 | Charger Reflash Error | Check the configuration file is appropriate for this charger model. Check use of the correct version of programming tool or protocol. |
| Alarm | E093 | Aux DC Output Short Circuit | Check for wiring errors. Check for faulty or shorted battery cells. Check for too much load on Aux Output. |
| Alarm | E094 | AC Input Voltage High Spikes | Monitor for stable AC voltage. Frequent spikes above 280VAC may damage the charger input. |
| Alarm | E095 | Safe Disconnect Alarm | Safe disconnect pin not connected but the primary contact pin connected. Ensure correct style of connector is used and the pins are installed correctly. |
| Alarm | E096 | Charger Operating Voltage Too Low | Raise charger output voltage above 21.0VDC to reduce thermal stress to internal components. |