KACO-error codes
Below you will find a list of common error messages from various brands. Not all error messages are listed here. It is advisable to also consult the manual of the device.| Brand | Error code | Cause | Action |
|---|---|---|---|
| Kaco | OS 1 | Self-test: The grid parameters and generator voltage are being checked. | If problem occurs repeatedly, Contact inverter service |
| Kaco | OS 2 | Insufficient generator voltage and power, status before the transition to night shutdown | If problem occurs repeatedly, Contact inverter service |
| Kaco | OS 8 | Checks the shutdown of the power electronics as well as the grid relay before feed-in mode. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 10 | In case of overheating, the inverter switches off. Possible causes: • Excessively high ambient temperature • Fan covered • Inverter defective. | Check the inverter for heat build up or blockage of the cooler ribs and rectify as required. If this does not correct the problem, Contact inverter service |
| Kaco | OS 11 | Power limitation: If the generator power is too high, the inverter limits itself to the maximum power (e.g. around noon if the generator capacity is too large). | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 17 | The activated grid and system protection has been tripped. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 18 | Residual current was detected. The feed-in was interrupted. | Contact inverter service |
| Kaco | FS 19 | There is an insulation fault on the PV generator. The feed-in was interrupted. | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 30 | The current and voltage measurements in the inverter are not within acceptable range. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 32 | The internal grid separation relay test has failed. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 33 | The DC feed-in has exceeded the permitted value. This DC feed-in can be caused by grid conditions and may not necessarily indicate a fault. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 34 | A communication error has occurred in the internal data transmission. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 35 | Protective shutdown of the software (AC overvoltage, AC overcurrent, DC link overvoltage, DC overvoltage, DC overtemperature). | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 36 | Protective shutdown of the hardware (AC overvoltage, AC overcurrent, DC link overvoltage). | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 38 | The voltage of the DC generator is too high. The PV generator is configured incorrectly. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 40 | The voltage of a grid phase is too low; | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 41 | the grid cannot be fed into. The phase experiencing failure is displayed. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 42 | the grid cannot be fed into. The phase experiencing failure is displayed. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 43 | the grid cannot be fed into. The phase experiencing failure is displayed. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 44 | the grid cannot be fed into. The phase experiencing failure is displayed. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 45 | the grid cannot be fed into. The phase experiencing failure is displayed. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 46 | the grid cannot be fed into. The phase experiencing failure is displayed. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 47 | The measured line-to-line voltage is outside of the tolerance limits. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 48 | Grid frequency is too low. This fault may be grid-related. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 49 | Grid frequency is too high. This fault may be grid-related. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 50 | The grid voltage measurement according to EN 50160 has exceeded the maximum permitted limit value. This fault may be grid-related. | Please check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | FS 57 | Waiting time of the inverter after a fault. | This text is displayed for in formation purposes only. |
| Kaco | FS 58 | The temperature inside the unit was too high. The inverter switches off to prevent damage to the hardware. | Check the inverter for heat build up or blockage of the cooler ribs and rectify as required. If this does not correct the problem, Contact inverter service |
| Kaco | FS 59 | A fault occurred during a self-test. | 1.) Switch off device with DC disconnector. 2.) Wait until the display has turned off completely. 3.) Switch on device with DC disconnector. If this does not rectify the error, Contact inverter service |
| Kaco | OS 60 | The inverter does not begin feeding into the grid until the PV voltage falls below a specified value. | Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service |
| Kaco | OS 61 | The external limit Power control was activated by the grid operator. The inverter limits its power. | This text is displayed for in formation purposes only. |
| Kaco | OS 63 | P(f)/frequency-dependent power reduction: Frequency-dependent power reduction will be activated when the BDEW (German Association of Energy and Water Industries) Medium Voltage Directive goes into effect. Power reduction starts at a frequency of 50.2 Hz. | This text is displayed for in formation purposes only. |
| Kaco | OS 64 | Output current limiting: The AC current is limited once the specified maximum value has been reached. | This text is displayed for in formation purposes only. |
| Kaco | FS 67 | There is a fault in the power section. | Contact inverter service |
| Kaco | FS 70 | The fan is malfunctioning. | Visual check: cooling circuit air supply. If the blockage cannot be rectified, Contact inverter service |
| Kaco | FS 73 | Standalone mode was detected. | This text is displayed for in formation purposes only. |
| Kaco | OS 74 | The grid operator limits the feed-in power of the inverter. | This text is displayed for in formation purposes only. |
| Kaco | OS 79 | PV generator’s insulation is being measured | This text is displayed for in formation purposes only. |
| Kaco | FS 80 | The insulation measurement cannot be performed because the generator voltage is too volatile. | This text is displayed for in formation purposes only. |
| Kaco | FS 81, 82, 83 | Overvoltage has been detected on a conductor. An internal protective mechanism has disconnected the device to protect it against damage. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 84 | A voltage deviation has been found in the DC link. An internal protective mechanism has disconnected the device to protect it against damage. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 85 | A voltage deviation has been found in the DC link. An internal protective mechanism has disconnected the device to protect it against damage. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 86 | Overvoltage has been found in the DC link. An internal protective mechanism has disconnected the device to protect it against damage. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 87,88,89 | A current that has been found on a conductor is too high. An internal protective mechanism has disconnected the device to protect it against damage. | If problem occurs repeatedly, Contact inverter service |
| Kaco | FS 93,94 | The control board is defective. | Contact inverter service |
| Kaco | FS 95,96 | The power section is defective. | Contact inverter service |
| Kaco | FS 97 | Too much power has been fed into the grid. Complete disconnection of the device. | Contact inverter service |
| Kaco | FS 98 | An internal protective mechanism has disconnected the device to protect it against damage. Complete disconnection of the device. | Contact inverter service |
| Kaco | FS 99 | An internal protective mechanism has disconnected the device to protect it against damage. Complete disconnection of the device. | Contact inverter service |
| Kaco | FS 100 | The device has been switched off because the temperatures in the housing were too high. | Check temperature of direct surroundings and reduce this as required. |
| Kaco | FS 101 | The unit has shut down because of implausible internal measured values. | Contact inverter service |
| Kaco | FS 102 | The unit has shut down because of implausible internal measured values. | Contact inverter service |
| Kaco | FS 103 | The unit has shut down because of implausible internal measured values. | Contact inverter service |
| Kaco | FS 104 | The unit has shut down because of implausible internal measured values. | Contact inverter service |
| Kaco | FS 105 | The unit has shut down because of implausible internal measured values. | Contact inverter service |
| Kaco | FS 106 | The unit has shut down because of implausible internal measured values. | Contact inverter service |
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