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Warning: UAP-AC-LITE and UAP-AC-LR with UniFi Switch on PoE+

[ Edited ]

Updated- 12/5/16: 


We’ve found some corner case conditions where the UniFi Switch or EdgeSwitch can activate the PoE protection mechanism in the UAP-AC-LITE and UAP-AC-LR.
This protection mechanism turns the UAP-AC-LITE and/or UAP-AC-LR off when 48V is applied to it.
The UniFi Switch series (US-8-150W, US-16-150W, and US-24, specifically), when hard-reboot (i.e. abrupt power loss) can inadvertently - and permanently - cause older UAP-AC-LITE and UAP-AC-LR to enable the protection.  And the AP then does not disengage the protection - and thus remains powered off.
UAP-AC-LITE and UAP-AC-LR with date codes older than the following, with UniFi switches
UAP-AC-LITE: D/C:1625(G),1624(K) and lower.
UAP-AC-LR: D/C:1625(G),1623(K) and lower.
Newer releases of the UAP-AC-LITE/UAP-AC-LR do not have this concern.  
If you have these older units, and want to ensure you are protected from any issues resulting from a hard reboot, adding the Instant 802.3af Adapters will prevent any damage/risk associated with this issue. For this reason, we are continuing to offer our limited-time give-away of Gigabit Instant 802.3af Adapters- please reach out to me @UBNT-APieper or @UBNT-Cody


If you believe any of your hardware may have been affected by these corner case conditions, please reach out to, and we'll get you taken care of.
UniFi Team

Ubiquiti Networks Enterprise Support Team

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