Error Messages

During operation of the PV system, events may occur which can refer to one or several inverters or the Sunny Multigate. Events can be information, warnings or errors. All events are displayed in the communication product you are using (e.g. Sunny Portal, Sunny Explorer). Sunny Explorer additionally displays the corresponding event number for each event.

Inverter

Event number

Event, cause and corrective measures

102

Grid fault / Grid overvoltage fast (102)

The grid voltage or grid impedance at the connection point of the inverter is too high. The inverter has disconnected from the utility grid.

Corrective measures:

  • Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

    If the grid voltage is outside the permissible range due to local grid conditions, contact the grid operator. The grid operator must approve changes to the operating parameters of the inverter.

    If the grid voltage is permanently within the permissible range and this message is still displayed, contact the SMA Service Line.

202

Grid fault / Grid undervoltage fast (202)

The utility grid has been disconnected, the AC cable is damaged or the grid voltage at the connection point of the inverter is too low. The inverter has disconnected from the utility grid.

Corrective measures:

  1. Make sure that the circuit breaker is switched on.
  2. Make sure that the AC cable is not damaged.
  3. Make sure that the AC cable is correctly connected.
  4. Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

    5. If the grid voltage is outside the permissible range due to local grid conditions, contact the grid operator. The grid operator must approve changes to the operating parameters of the inverter.

    If the grid voltage is permanently within the permissible range and this message is still displayed, contact the SMA Service Line.

301

Grid fault / Voltage increase protection (301)

The grid voltage or grid impedance at the connection point is too high. The inverter disconnects from the utility grid to comply with the power quality.

Corrective measures:

  • Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

    If the grid voltage is outside the permissible range due to local grid conditions, contact the grid operator. The grid operator must approve changes to the operating parameters of the inverter.

    If the grid voltage is permanently within the permissible range and this message is still displayed, contact the SMA Service Line.

401

Grid fault / Island grid (401)

The inverter is no longer in grid parallel operation and has stopped feed-in operation for safety reasons.

Corrective measures:

  • Check the grid connection for significant, short-term frequency fluctuations.

501

Grid fault / Grid frequency disturbance (501)

The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.

Corrective measures:

  • If possible, check the power frequency and observe how often major fluctuations occur.

    If fluctuations occur frequently and this message is displayed often, contact the grid operator. The grid operator must approve changes to the operating parameters of the inverter.

    If the grid operator gives his approval, discuss any changes to the operating parameters with the SMA Service Line.

3401

DC overvoltage / Overvoltage input A (SW) (3401)

The DC input voltage connected to the inverter is too high. This can destroy the inverter.

Corrective measures:

  1. Immediately disconnect the PV module from the inverter.
  2. Check whether the DC voltage is below the maximum input voltage of the inverter.

    3. If the DC voltage is below the maximum input voltage of the inverter, reconnect the DC connectors to the inverter.

    If the DC voltage is above the maximum input voltage of the inverter, ensure that the PV array has been correctly rated or contact the installer of the PV array.

    If this message is repeated frequently, contact the SMA Service Line.

3501

Insulation resistance / Insulation failure (3501)

The inverter has detected a ground fault in the PV array. As long as the fault exists, the inverter will not feed in.

Corrective measures:

3902

Waiting for DC start conditions / Generator voltage too low / Start conditions not met (3902)

The PV array voltage is too low.

Corrective measures:

  1. Wait until the level of solar irradiation has increased.
  2. If necessary, remove snow or dirt from the PV modules.

3903

Waiting for DC start conditions / Generator voltage too high / Start conditions not met (3903)

The PV array voltage is too high.

Corrective measures:

  • Wait until the DC start conditions are met.

6002 … 6006

Self diagnosis > Interference of device (6002, 6005, 6006)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

6305

Self diagnosis > Interference of device (6305)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

6402

Self diagnosis / Overtemperature (6402)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

6406

DC overcurrent / Overcurrent input A (HW) (6406)

The current at the module input of the inverter is too high. The inverter has interrupted the feed-in operation.

Corrective measures:

  • Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range and/or whether voltage jumps occur (e.g. by switching on and off large loads).

    If voltage jumps occur or the grid voltage is outside the permissible range due to local grid conditions, contact the grid operator. The grid operator must approve changes to the operating parameters of the inverter.

    If the grid voltage is permanently within the permissible range and this message is still displayed, contact the SMA Service Line.

6415

Self diagnosis > Interference of device (6305)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

6450

Self diagnosis / Energy transfer not possible / Interference device (6450)

The inverter cannot feed into the utility grid. Possible causes: grid voltage is too high; a PV module is defective, soiled or shaded; a cloudy or foggy day.

Corrective measures:

  1. Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

    2. If the grid voltage is outside the permissible range due to local grid conditions, contact the grid operator. The grid operator must approve changes to the operating parameters of the inverter.

  2. Check whether the DC voltage is stable in a realistic range in accordance with the datasheet of the PV module and the assessment of the weather situation. Therefore, determine the voltage during inverter operation using a communication product.
  3. Check whether the respective PV module is heavily soiled or shaded.

    4. Clean the PV module if soiled.

  4. On extremely cloudy or foggy days, wait for higher solar irradiation.
  5. If none of the described causes is applicable and the message is still displayed, contact the SMA Service Line.

10265

PLC communication impaired (10265)

The cause must be determined by the SMA Service Line.

Corrective measures:

  1. If several Sunny Multigate devices are installed in a PV system, check whether the AC cables from the inverters to the Sunny Multigate devices have been laid in separate channels. If the AC cables are not laid separately from each other, do lay the AC cables from the inverter to the Sunny Multigate in separate locations.
  2. If the problem persists, contact the SMA Service Line.

Sunny Multigate

Event number

Event, cause and corrective measures

6702

Interference device (6702)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

7001

Fault sensor interior temperature (7001)

The temperature sensor for the indoor temperature of the Sunny Multigate is defective. Feed-in operation will be interrupted.

Corrective measures:

  • Contact the SMA Service Line.

8101 … 8102

Communication disturbed (8101, 8102)

An error has occurred in the internal communication. This can be caused by one of the following: Feed-in operation continues.

Corrective measures:

  1. If several Sunny Multigate devices are installed in a PV system, check whether the AC cables from the inverters to the Sunny Multigate devices have been laid in separate channels. If the AC cables are not laid separately from each other, do lay the AC cables from the inverter to the Sunny Multigate in separate locations.
  2. If the problem persists, contact the SMA Service Line.

8104

Interference device (8104)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

9014

Invalid device combination (9014)

The Sunny Multigate and the inverters cannot be operated in this combination.

Corrective measures:

  1. Contact the SMA Service Line and request the latest firmware package, if necessary.

9015

Max. permitted number of inverters exceeded (9015)

The number of inverters connected exceeds the maximum number specified in the currently set standard.

Corrective measures:

  • Reduce the number of inverters in the PV system until the maximum permissible number is reached (see user manual of the communication product).

10221

New device cannot be administered (10221)

The cause must be determined by the SMA Service Line.

Corrective measures:

  • Contact the SMA Service Line.

10259

Inconsistent communication version (10259)

The communication version of an inverter is not supported or the device combination is invalid.

Corrective measures:

  1. Contact the SMA Service Line and request the latest firmware package, if necessary.

10265

The device with serial number X has not been available for X day(s) (10265)

Communication with one or several inverters is no longer possible.

Corrective measures:

  1. Check cables and inverters for loose connectors or damage.
  2. Check PV modules for soiling or damage.
  3. If the problem persists, contact the SMA Service Line.

10267

Loss of communication to one or several devices (10267)

Communication with one or several inverters is no longer possible.

Corrective measures:

  1. Check cables and inverters for loose connectors or damage.
  2. Check PV modules for soiling or damage.
  3. If the problem persists, contact the SMA Service Line.
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