Shelly 4 Pro - Screen goes off and network does not respond

    • Autor

    Hi all,

    I have a Shelly 4 Pro with only three channels in use (forth not connected yet). It works for most of the time (all features) however most recently I have noticed randomly the device just stops responding on the network (connected via wifi) and its not the network. If I go to the device the screen is off and none of the buttons are responsive (the up down ok buttons).

    However even though the screen is off, the buttons are not responsive, it is still supplying power to the loads connected to it on the default state which is ON. I do not see a reboot/reset button on the device so I am assuming I will have to power the device off and then back on (havent done this yet as its running some of my critical loads in the house).

    The default load its running on the three channels (this data is over about 5 months)

    Average / 5 months data

    Channel 1 - 300W - 1.5amps

    Channel 2 - 400W - 2amps

    Channel 3 - 150W - 0.6amps

    The device has the latest firmware as of Monday this week (8/8/2022)

    Like I said the device is still providing power to the circuits but I cannot interface with it. Any ideas?

    I've noticed a little similar behaviour than you, driving a FAN MOTOR device.

    The Shelly 4 PRO EM goes goes 'lock' as the internal contact gets OPEN. So I think some extra power is getting INSIDE shelly due motor is decreasing rotation: this gets the device locked/reset/...

    I've fixed the white screen of death by putting the snubber (100nF 630v+ 100ohm 1/2w) in parallel with the load (fan) and now all is ok: can switch on and off with no more shelly white screen at the off condition happens.