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You are in our troubleshooting system for all service queries. By entering a search query, you can receive useful information and valuable tips on our inverters, communication products and software programs.

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Diagnostics case :

Event number 75, 7508 Fan fault > Clean fan

Event numbers 75, 7508 Fan error > Clean fan

Event numbers 75 and 7508 indicate that one of the inverter’s fans is blocked.

Corrective measures for system operators:

• Contact an installer or an SMA solar power professional. The subsequent steps require the specialist knowledge of an electrically qualified person or installer.

Corrective measures for installers:

DANGER! The tasks described below may only be performed by electrically qualified persons:

• Clean the fans and check that they are operating, as described in the service manual or the device type’s installation manual. They are available for download at https://www.sma.de/en/service/downloads.html. Ventilation grids can be ordered as replacement parts.

All work on the inverter and the cabling of the PV array must be carried out by an electrically qualified person. SMA accepts no liability for the information and solutions given in the Online Service Center. Additional information can be found in our Online Service Center’s terms and conditions of use.


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