Please check the firmware version and check for the compatibility...
Try to upgrade or downgrade the current version and see the alerts...
After upgrade to ESXi v6.7.0U1 and plus vCenter v6.7.0U1, the warning still come up even acknowledge or set to green, but not all 3 ESXi have the same problem.
It figure out that if the server have "Device" sensor as below, it will have alarm, if the ESXi doesn't have "Device" sensor, it won't have warning, but all three server are same hardware and software.
Known issue, will be fixed in a future iLO update, will not affect server operation, just annoying
Does anyone know when the correct iLO update has been rolled out? We currently have ESX6.7 U2 installed and we still have the same problem.
We have also installed the latest HP iLO firmware (1.40)