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Fault codes 087, 089: AFD alarms
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

In the event of Fault Codes 87, 89 being informed through the App, the following corrective measures shall be taken:

Adjustable Frequency Drive:

AFD Module Alarm (Code 087)

Fault Name

AFD module alarm (alarm code: 087)

Fault Type

Alarm

Fault Condition

Arc detection module is abnormal (including communication fault and self-check failure)

Troubleshooting steps and methods

It is recommended to replace the inverter.

AFD Off Alarm (Code 089)

Fault Name

AFD Off Alarm (alarm code: 089)

Fault Type

Fault

Fault Condition

The AFD is detected to be disabled.

Troubleshooting steps and methods

Enable the AFD.

keywords: 087, 87, code 87, 089, 89, code 89


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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