https://community.ruckuswireless.com/t5/ZoneDirector/Unwanted-Noise-on-the-ZoneDirector/m-p/14738#M3172 Nice vid!<BR />You are absolutely certain the noise emanates from the ZD (and not from kit above)?<BR /><BR />Sounds like worn fan bearings on the way out. Believe a ZD3000 has 2 fans at back of unit.<BR /><BR />Suggest query tech support and get replacement unit. Mon, 20 Mar 2017 15:49:15 GMT max_o_driscoll 2017-03-20T15:49:15Z https://community.ruckuswireless.com/t5/ZoneDirector/Unwanted-Noise-on-the-ZoneDirector/m-p/14737#M3171 Hi,<BR /><BR />We have encountered some unwanted and disturbing noise on our ZoneDirector, the noise lasted for around 2 hours but stopped on itself. Please see my shared link of the video taken during the incident:&nbsp;<A href="https://drive.google.com/open?id=0B2EPe3bdUiyAa054aUl6Mmt2SFU" rel="nofollow">https://drive.google.com/open?id=0B2EPe3bdUiyAa054aUl6Mmt2SFU</A><BR /><BR />Could anyone please&nbsp;tell me what's wrong with our unit? What can we do to prevent this to happen again.. Mon, 20 Mar 2017 02:03:24 GMT https://community.ruckuswireless.com/t5/ZoneDirector/Unwanted-Noise-on-the-ZoneDirector/m-p/14737#M3171 noel_saldana 2017-03-20T02:03:24Z https://community.ruckuswireless.com/t5/ZoneDirector/Unwanted-Noise-on-the-ZoneDirector/m-p/14738#M3172 Nice vid!<BR />You are absolutely certain the noise emanates from the ZD (and not from kit above)?<BR /><BR />Sounds like worn fan bearings on the way out. Believe a ZD3000 has 2 fans at back of unit.<BR /><BR />Suggest query tech support and get replacement unit. Mon, 20 Mar 2017 15:49:15 GMT https://community.ruckuswireless.com/t5/ZoneDirector/Unwanted-Noise-on-the-ZoneDirector/m-p/14738#M3172 max_o_driscoll 2017-03-20T15:49:15Z