Skip to main content
Fault code 008: Grid Overfrequency

Applicable to SH15-20-25T series

Updated over a week ago

These faults apply to the following sungrow products:

  • SG30CX / SG33CX / SG40CX / SG50CX / SG110CX

  • SG2.0RS-S / SG2.5RS-S / SG3.0RS-S / SG3.0RS /SG3.6RS / SG4.0RS / SG5.0RS / SG6.0RS

  • SH3.0RS/SH3.6RS/SH4.0RS/SH5.0RS/SH6.0RS

  • SG3.0RT / SG4.0RT / SG5.0RT / SG6.0RT / SG7.0RT /SG8.0RT / SG10RT / SG12RT / SG15RT / SG17RT /SG20RT

  • SH5.0RT/SH6.0RT/SH8.0RT/SH10RT

  • SH5T/6T/8T/10T/12T/15T/20T/25T

  • S450S/S800S/S1600S

In the event of Fault Code 8 being informed through the App, the following corrective measures shall be taken:

Grid overfrequency (Code 008)

Fault name

Grid overfrequency (fault code: 008)

Fault type

Failure shutdown

Fault condition

The maximum frequency of the grid exceeds the set over-frequency-protection-value and the duration exceeds the set time

Steps and method of troubleshooting

1. Check whether the country selection is correct (the grid frequency is 50Hz or 60Hz).

2. Check whether the set value of inverter over-frequency protection is correct.

3. Check whether the displayed frequency is consistent with the actual value. If the two values are different, it can be inferred that the sampling is abnormal. It is recommended to replace the inverter.


For further information, please download the user manual here.

This manual is intended for professional technicians who are responsible for installation, operation, maintenance and troubleshooting of inverters, and users who need to check inverter parameters. The inverter must only be installed by professional technicians.

The professional technician is required to meet the following requirements:

  • Know electronic, electrical wiring and mechanical expertise, and be familiar with electrical and mechanical schematics.

  • Have received professional training related to the installation, commissioning and troubleshooting of electrical equipment.

  • Be able to quickly respond to hazards or emergencies that occur during installation, commissioning and troubleshooting.

  • Be familiar with local standards and relevant safety regulations of electrical systems.

  • Read this manual thoroughly and understand the safety instructions related to operations.

Did this answer your question?