From the event log, the device may experience intermittent power supply failure messages on a PSA7000 device.
critical - System() - 2018/06/07 19:24:41 - Sending ivePowerSupplyNotify
[ psDescription='One of the power supplies has failed' ]
critical - System() - 2018/06/07 19:25:46 - Sending ivePowerSupplyNotify
[ psDescription='Both the power supplies are back up' ]
A visual check of the power supply does show green lights for both power supplies.