ABB inverter error codes
The following are some codes you may get from an ABB inverter.
Codes that start with the letter “E” indicate an error, while those starting with “W” are warnings:
|Type of Issue||Common Error / Warning Codes||Overview|
|Grid voltage and frequency disturbances||W003 – Wrong grid parameters|
W004 – Grid overvoltage
W005 – Grid undervoltage
W006 – Grid overfrequency
W007 – Grid underfrequency
|Grid issues are temporary, and the inverter will resume normal operation when they end. However, you should get technical support if these warnings remain active when the grid returns to normal.|
|Overcurrent and other faults||E001 – Input overcurrent (DC)|
E002 – Input overvoltage
E006 – Output overcurrent (AC)
E012 – DC/DC converter error (detected by the inverter)
E016 – Inverter fail (detected by DC/DC converter)
E018 – Leakage current fault
E020 – DC/DC relay fault
E021 – Inverter relay fault
E023 – DC injection error
E025 – Low insulation resistance
E036 – Average output voltage outside of range
|Many of these errors indicate isolated events, but you should get the inverter checked if they persist.|
The E018 error could mean there is a ground fault on the solar array.
The E025 error could mean the insulation is damaged, making ground faults more likely.
You should get technical support if any of these errors become persistent.
|Inverter status notifications||W001 – Input voltage under threshold|
W002 – Input undervoltage
|Generally, these warnings appear when the solar array is not generating enough voltage for conversion to AC. The inverter operates normally when the voltage reaches a suitable value.|
|Electrical connection issues||E013 – Wrong input setting||You should get technical support, to ensure that all inverter parameters are set correctly.|
|Temperature issues||E014 – Internal temperature of the inverter too high|
W010 – Fan failure
E033 – Internal temperature of the inverter too low
|The inverter will operate normally when temperature returns to a suitable value. Make sure there are no objects or dust blocking the air inlets. |
Fan issues have their own warning code, and you should get them checked.
|Software issues||E005 – Communication error|
E017 – Start timeout
W012 – Clock battery low
W013 – Clock failure
|Many software errors are temporary, and they can be fixed by resetting your inverter. You can update the firmware if a reset is not enough.|
ABB inverters generate other codes beyond those listed above. They can indicate communication issues, sensor faults, measurement errors, etc. Regardless of the specific code or warning indicated by the inverter, you should get technical support if issues become frequent.
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