We would need more information to determine what is going on. Create a SNMP walk for this F5 device and collect fresh diagnostics. Then please create a support ticket and attach those information's to it.
Here it is !
Case #408379 - "F5 BigIP - No hardware status"
The problem seems to be for the VE version of the F5. We updated one of our appliance model, and it works. Information seems to be in a different place for the virtual edition.
Could you please share the link to check to resolve F5 VE hardware health issue ??
Is it ok to say that disable hardware monitoring in Solarwinds for F5 VE editions as they dont have hardware.