Amplifi HD keeps dropping connection


  • I've had to reboot the amplifi HD five times in the last five hours as it's so unstable. About every hour it drops all connections. It keeps broadcasting an SSID but most clients can't connect. If I am connected, the app cannot access the device. I've updated to the latest firmware, downgraded to a previous known working version, reupgraded and nothing has worked. How can I fix this as it's pretty near unusable at this stage.


  • @andykelk

    When it comes back does it restart the “uptime” like the unit just rebooted itself Or does it seem to just drop the WiFi connection come back up and still report that everything is ok?


  • @PmedicJ
    Sorry for the late response - it's been working fine the last few days so I've been unable to verify. It happened again this morning. What I noticed:

    • A wired client continued working but the three wireless devices that were in use all stopped working. They remained connected to the AP but all requests were timing out.
    • The mesh point connection was showing as offline in the Amplifi app
    • The uptime had not reset and it was saying "everything is great"
    • It may be coincidence, but going into the app and turning off the additional SSID (2.4Ghz) got the wireless going again.

  • And it just died again but I couldn't even access it from the app this time. A full power cycle was the only way I could bring it back.


  • @andykelk What modem are you using? I have seen something like this recently happen with a business class modem that was in use. it had multiple WAN ports and only one can be active at a time from the ISP, and another device was connected to WAN 2 on the modem, stealing the IP address from AmpliFi causing all devices on the network to drop.


  • @UI-Brett
    Hi Brett,

    The Amplifi HD is connected via the WAN port to a NBN NTD (NetComm Wireless NDD-0300). The device only has a single port labeled "gateway" to which the Amplifi is connected.


  • @andykelk said in Amplifi HD keeps dropping connection:

    A wired client continued working but the three wireless devices that were in use all stopped working. They remained connected to the AP but all requests were timing out.

    Support files will help me greatly in figuring out what exactly is happening. When you experience the outage again, can you generate support files for me? During the outage would be ideal, and since you said a wired device can maintain connection, using your wired device via the WebUI to download would work. https://help.amplifi.com/hc/en-us/articles/360033122174-Downloading-Support-Information-

    With that being said about your modem, my suspicion is on the radio's and maybe hardware related. If thats the case the support files will show and we can begin the RMA process with you.


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