Hi Macherla,
Can you please check your network is running or having any issue. You can extract AP tech support by navigating to monitor-APs and click on system info to download AP tech support?
How is the frequency of the issue?
https://support.ruckuswireless.com/answers/000001658Also refer above KB article if it is rebooting due to heartbeat lost and this could be network issue so please verify ?
Regards,
Raghavendra.