One or more servers is not responding ​ SPTimerService (SPTimerV4)

Hi,

In health analyzer i am getting following error message :

One or more servers is not responding ​ SPTimerService (SPTimerV4)
The following servers have not executed any timer jobs in the last 2 hours: APPSERVER.  This can happen if the server was shut down or lost network connectivity,  or if the timer service on that server has crashed, hung, or been stopped.

i have checked timer service is running and i also stop and start time service and re-analyze the rule but HA still showing error.

pls tell what is the issue and how to fix it. thx