Plug S suddenly dropped WiFi connection

    Hi,

    meanwhile I am operating quite a bunch of shelly products. So far I have been happy with cost, ease of use and performance of the products, except the Plug S.


    When five months old, one of the Plug S suddenly did't work anymore, simply went off, no more LEDs - over and out. No reset possible.
    Fortunately the dealership replayed it w/o any discussion.


    Today after nineteen months the second Plug S stopped working. I.e. suddenly no longer reachable, dropped off the WIFI network. Device was neither stressed not in a harsh environment.
    Max load ever 600W, inside building, 15ft distance to router.
    Firmware ist the latest 20230913-113421/v1.14.0-gcb84623

    So at first I did a factory reset which worked partially, some of my settings were still there, some were factory reset - strange.
    After Reset device provided WiFi AP
    I logged in 192.168.33.1 and tried switching on/off as a simple connection test. Worked right away.
    Then I tried to include teh Plug S into my local WiFi (I don't use cloud at all) so I entered the credentials of my WiFi network.
    When I hit the save button it took a while until I got an error message "Could not change settings: device could not be reached".
    From this point onwards the device is neither accessible in the WiFi network, nor does it provide its own AP to log on.

    I then can do this reset and trying to save WiFi credentials again and agan, doesn't help. (...and - YES the credentials are the correct ones)

    Anything else I can do ?

    No longer really pleased with the quality of Plug S :o(. Two out of three failed.

    Welcome to the forum!

    Quite often it happens I get a similar error message after dropping the credentials of my WLAN in the menu. But in almost all cases, the Shelly HAD connected to my WLAN! Thus, I check this (e,g. with the App ‘Net Analyser’ on my tablet). Is the Shelly online, I don’t care about the error message. Seems to be caused by some delay in information processing…

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)

    thgoebel txs for the hint. I indeed missed to mention... I always doublecheck if the Shelly did connect to WiFi or not - no matter what the screen is telling me - it did not connect.
    For checking I try a simple ping first, then Quickscan App on Android which usually is good enough. If devices can't be reached/seen they are not connected.
    For tough cases I check my Network Monitor NTOPNG and wireshark. But this Shelly Plug simply doesn't work.

    Seems to me this Shelly has to be sent back to the distributor…

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)