Serial number displays as "FFFFFFFFFF" in Field Pro

This article explains what to do when the Field Pro app displays FFFFFFFFFF instead of a generator's serial number. It provides separate support guidance for Independent Authorized Service Dealers and non-authorized installers or other users so they can contact the appropriate resource for assistance.

  • Aug 31, 2026
  • Knowledge

Title
Serial number displays as "FFFFFFFFFF" in Field Pro
URL Name
Serial-number-displays-as-FFFFFFFFFF-in-Field-Pro

Public Content

Why does the serial number display as FFFFFFFFFF in Field Pro?

When using the Field Pro app to connect to a generator, the serial number may display as FFFFFFFFFF instead of the generator's actual serial number.

Environment

This article applies to the Field Pro mobile application when the generator serial number displays as FFFFFFFFFF.

Issue or question

Why does Field Pro display Serial Number: FFFFFFFFFF instead of the generator's actual serial number?

How to resolve

This condition requires dealer assistance. Follow the guidance below based on your role:

  • Independent Authorized Service Dealer (IASD): Contact your internal Generac support resources for assistance. Have your dealer number and technician ID available.
  • Non-authorized installer or other user: Contact a Generac IASD for assistance. Use the dealer locator to find a nearby dealer.
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