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Fault Code 051: Off-Grid Load Overpower Fault
Updated over a week ago

These faults apply to the following sungrow products:

  • SH5.0RT/SH6.0RT/SH8.0RT/SH10RT

  • SH5T/6T/8T/10T/12T/15T/20T/25T

In the event of Fault Code 051 being informed through the App, the following corrective measures shall be taken:

Code 051 (Off-Grid Load Overpower Fault):

Fault name

Off-Grid Load Overpower Fault(Code 051)

Fault type

Failure shutdown

Fault condition

Power required for the load connection at the off-grid port is greater than the Power that PV/battery can provide

Steps and method of troubleshooting

1. Reduce the load Power at the off-grid port or cut off some loads.
2. If the fault is not caused by the foregoing reasons and still exists, please contact Sungrow Service.

keyword: 051, 51, code 51


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.

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