TroubleshootingEvent and alert messagesThinkServer serversFQXTS658177On this pageFQXTS658177 : Cooling Device Redundancy has been LostCooling Device Redundancy has been LostSeverityCriticalServiceable with logYesAutomatically Notify SupportNoUser ActionComplete the following steps to resolve the issue: Reseat the failing fan (indicated by the lit LED on the fan).Replace the fan.Give documentation feedback