Event messages

Key for LEDs/display

LED lights up

Status of PV modules

LED flashing

Status of grid

Original status

Status of communication

LED off

Warning message/alarm

Event codes

LED

Event code

Causes

Recommended measures

Portal

Device

 

 

-

-

Inverter update (LEDs run)

-

-

-

Status normal

-

-

-

Commissioning/start-up

-

-

-

WLAN / WiFi / RS485 communication

-

-

-

PV normal

-

30001

A0 - Supply overvoltage

The grid voltage exceeds its permissible range or the grid is not available.

If the alarm occurs occasionally, there may be a fault in the power supply system. No additional measures are required.

If the alarm occurs repeatedly, contact your local power company. If the fault is not caused by the grid, check the grid settings of the inverter using the KOSTAL PIKO CI Conf App.

If the alarm continues for a long time, check whether:
- the AC circuit breaker is disconnected,
- the AC circuit breaker is damaged,
- the AC terminals are detached,
- the grid has a power failure.

30002

A1 - Supply undervoltage

The grid voltage exceeds its permissible range or the grid is not available.

If the alarm occurs occasionally, there may be a fault in the power supply system. No additional measures are required.

If the alarm occurs repeatedly, contact your local power company. If the fault is not caused by the grid, check the grid settings of the inverter using the KOSTAL PIKO CI Conf App.

If the alarm continues for a long time, check whether:
- the AC circuit breaker is disconnected,
- the AC circuit breaker is damaged,
- the AC terminals are detached,
- the grid has a power failure.

30003

A2 - Grid missing

The grid voltage exceeds its permissible range or the grid is not available.

If the alarm occurs occasionally, there may be a fault in the power supply system. No additional measures are required.

If the alarm occurs repeatedly, contact your local power company. If the fault is not caused by the grid, check the grid settings of the inverter using the KOSTAL PIKO CI Conf App.

If the alarm continues for a long time, check whether:
- the AC circuit breaker is disconnected,
- the AC circuit breaker is damaged,
- the AC terminals are detached,
- the grid has a power failure.

30004

A3 - Grid overfrequency

The grid voltage exceeds its permissible range or the grid is not available.

If the alarm occurs occasionally, there may be a fault in the power supply system. No additional measures are required.

If the alarm occurs repeatedly, contact your local power company. If the fault is not caused by the grid, check the grid settings of the inverter using the KOSTAL PIKO CI Conf App.

If the alarm persists for a long time, check whether the AC line circuit breaker / AC terminals are disconnected or the grid power supply has failed.

30005

A4 - Grid underfrequency

The grid voltage exceeds its permissible range or the grid is not available.

If the alarm occurs occasionally, there may be a fault in the power supply system. No additional measures are required.

If the alarm occurs repeatedly, contact your local power company. If the fault is not caused by the grid, check the grid settings of the inverter using the KOSTAL PIKO CI Conf App.

If the alarm persists for a long time, check whether the AC line circuit breaker / AC terminals are disconnected or the grid power supply has failed.

30006

B0 - PV overvoltage

The input voltage of the PV modules exceeds the permissible range of the inverter.

Check the number of PV modules and adjust them if necessary.

30007

B1 - PV insulation fault

There is a short circuit between PV strings and protective earth. PV strings are installed in a persistently humid environment.

If the alarm occurs accidentally, the external circuits (PV strings) will supply irregular values. The inverter automatically returns to normal operation after the fault has been corrected.

If the alarm occurs repeatedly or lasts for a long time, check whether the insulation resistance of the PV strings to earth is too low.

30008

B2 - Discharge current error

The insulation resistance to earth on the input side decreases during inverter operation, resulting in too high a residual current.

Check the insulation resistance to earth for the PV strings. If a short circuit has occurred, correct the error.

If the insulation resistance to earth in a rainy environment is lower than the default value, adjust the insulation resistance in the KOSTAL PIKO CI Conf App.

30012

B4 - PV undervoltage

The input voltage of PV modules is below the preset protection value of the inverter.

When the intensity of the sunlight is low, the voltage of the PV modules drops. No action is required.
If the intensity of sunlight is high, check for short circuits, open circuits, etc. in the PV strings.

30013

B5 - Overvoltage protection module defective

PV or AC overvoltage protection module faulty.

Please contact customer service.

30014

A6 - Grid error

Fault in the power supply system or DC switch is OFF

If the alarm occurs occasionally, there may be a fault in the power supply system. No additional measures are required.
If the alarm trips repeatedly, please proceed as follows:
- Measure the three-phase voltages (L1-N, L2-N, L3-N) and check whether the unbalance is over 30%. If so, please contact your energy supplier.
- Measure the three-phase voltages at the input and output side of the AC circuit breaker to check whether the circuit breaker is damaged.
- Turn the DC switch to ON. If the DC switch trips frequently, contact your support team.

30015

C1 - Arc faults

The PV cables may be damaged.

Check the PV string cabling for damage. If the alarm occurs repeatedly, the inverter cannot function properly. Please contact customer service.

30016

A7 - High average grid voltage

The high average grid voltage exceeds the permissible range.

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected. No further measures are required.
If the alarm occurs repeatedly, the inverter cannot function properly. Please contact customer service.

30017

C2 - Grid DC current share too high

The DC share in the grid exceeds the permissible range.

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected. No further measures are required.
If the alarm occurs repeatedly, the inverter cannot function properly. Please contact customer service.

30018

C3 - Inverter relay fault

Internal relay faulty

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected. No additional measures are required.
If the alarm occurs repeatedly, for three-phase inverters, check the voltage of the live cable and of the neutral cable to earth. If the grid side is normal, please contact customer service to register a repair.

30019

Cn - Remote deactivation

Communication failure

If an external data logger is used, restart the data logger or check the connection.
If the error still occurs, contact your support team.

30020

C5 - Excessive inverter temperature

The internal temperature exceeds the permissible range.

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected. No additional measures are required.
If the alarm occurs repeatedly, please check whether the installation location is exposed to direct sunlight, poor ventilation or high ambient temperatures.
If the ambient temperature is under 45 °C and the heat dissipation and ventilation are good, please contact your support team.

30021

C6 - Residual current monitoring fault

Residual current device test failed.

If the alarm occurs occasionally, there may be a temporary exception in the external cabling.
The inverter can automatically return to normal operation after the fault has been corrected. No action is required.
If the error still occurs, contact your support team.

30022

B7 - Reverse polarity of strings

The cables of the PV strings were connected the wrong way round during inverter installation.

Check that the PV string cables are correctly connected. If they are connected the wrong way round, connect the cables correctly.
If the cables for the PV strings are connected the wrong way round and the DC switch is set to ON, intervention on the switches or PV connections is not permitted. If interventions are made, the device may be damaged. Wait for a period when there is less solar irradiation, e.g. in the evening, and for the PV string current to fall below 0.5 A. Set the three DC switches to OFF and correct the PV connections.

30023

C7 - System error

Internal system fault/warning

If the alarm occurs and the inverter is not working, please restart the inverter. If the error still occurs, contact your support team.

30024

C8 - Fans blocked

Internal system fault/warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30025

C9 - Intermediate circuit unbalance

Internal system fault/warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30027

CB - Internal communication error

Internal warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30028

CC - Software incompatible

Internal warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30029

CD - EEPROM error

Internal warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30030

CE - Persistent warning

Internal warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30031

CF - Inverter error

Internal warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30032

CG - DC booster error

Internal warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected.
If the alarm occurs repeatedly, contact your support team for technical assistance.

30036

BA - PID device error

Internal system fault/warning

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected. No further measures are required.
If the alarm occurs repeatedly, the inverter cannot function properly. Please contact customer service.

30037

Bb - AFCI module faulty

The inverter has lost communication with the AFCI module.

Please contact customer service.

30038

CH - Master connection lost

Connection between slave and master inverter is interrupted.

Check whether the communication line to the master inverter has been interrupted.
If the error still occurs, contact your support team.
Check the communication settings in the KOSTAL PIKO CI Conf app.

30039

CJ - Meter connection lost

Communication connection to energy meter (KSEM) interrupted

Check whether the communication line between the master inverter and energy meter (KSEM) has been interrupted.
If the error still occurs, contact your support team.
Check the communication settings in the KOSTAL PIKO CI Conf app.

30040

Co - Park controller

Communication failure

If an external park controller is used, restart the park controller or check the connection.
If the error still occurs, contact your support team.

30041

A8 - Neutral conductor grid error

Fault in the power supply system

If the alarm occurs occasionally, the inverter can automatically return to normal operation after the fault has been corrected. No further measures are required.
If the alarm occurs repeatedly, the inverter cannot function properly. Please contact customer service.

 

If the inverter enters shutdown mode due to an event shown above, the Warning/Alarm LED will light up. The Troubleshooting table (Troubleshooting) describes actions to be taken for the most common events.