CMS Inverter Fault Codes

CMS Inverter Information

CMS 2000 Grid Tie Inverter Datasheet
CMS 2000 Inverter Installation Operation Manual
CMS3000SS Manual

If you can not find a solution to your inverter issues, we would be more than happy to assist you. Please give us a call on 1300 18 20 50 to get the process started.

System Fault & Error Messages

Operational MessageMessage MeaningDescription
Isolation FaultIsolation failureEarth fault on the solar panels or failure of surge protection
Ground I FaultGFCI activeLeakage current to ground is too high
Grid FaultGrid failureGrid measured data is beyond the specification (voltage & frequency)
No UtilityNo utilityUtility is not available
PV Over VoltageInput voltage too highInput voltage from the solar panels higher than the max input voltage

Inverter Fault & Error Messages

Operational MessageMessage MeaningDescription
Consistent FaultConsistent failureThe readings of 2 microprocessors are not consistent. CPU and/or other circuit not functioning may be the cause
Over TemperatureTemperature too highThe internal temperature is higher than the normal value
Relay FailureOutput relay failureThe relay between the inverter and grid is not functional
DC INJ HighOutput DC injection too highOutput DC injection is too high
EEPROM FailureEEPROM problemEEPROM inside the inverter has a data access problem.
SCI FailureProblem with communication between microprocessorsThe communication between MCU inside the inverter is abnormal
High DC BusDC bus voltage is too highThe DC Bus inside is higher than expected
Low DC BusDC bus voltage is too lowThe DC Bus inside is lower than expected
Ref 2.5V Fault2.5V reference voltage inside problemThe 2.5V reference inside the inverter is abnormal
DC Sensor FaultOutput DC sensor abnormalThe DC output sensor is abnormal

If you can not find a solution to your inverter issues, we would be more than happy to assist you. Please give us a call on 1300 18 20 50 to get the process started.

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