Spontaneous off

Jolly#Bread#17606

Hi all!

I’ve got multiple Shelly dimmer 2 in my home but there are a few with strange behavior.

For example:

I have home automation with Homey, in which I can make flows with triggers and makes actions. Like IFTTT.

Now, when my front door is openend a sensor triggers a flow to start and switches on a lamp. After 5 minutes there will be started another flow to power off the lamp. Quit simple. There is no other trigger then the 5 minutes to power off the lamp, and I have been testing the 5 minutes.

BUT after a few seconds after switching on the lamp is switched off! I can see in my logfile from Homey there was no action (still 5 minutes is running) but in the Shelly app I can see the lamp powers off. Suddenly! Without any command!

Does anyone recognize this? I have got this on two Shelly dimmers (2), the others are oke

Jolly#Bread#17606

BTW, I saw a similar thread, but that one was fixed by the assumed (to much) power. I have got maximum of 40W AND the neutral is connected.

mgzon

Hi,

I've had the same problem with mine running firmware 1.8.5

I found this thread

Dimmer 2 overload after 1 day

I have now downgraded down do 1.7.2

So far so good (only been running for an hour so i can't say for sure yet)

Jolly#Bread#17606

ThX!

I will try it on one of my dimmers. Since I have got at least 2 dimmers which always power offs automatically I can see if it happen again or not!

I will let u know!

parda

I actually had the same problem for a couple of days or maybe a little bit more, suddenly, and has I was searching for the reason of this happening and hopefuly a solution, I have done the downgrade of the firmware as you mentionned.

The issue was very annoying as we are approaching winter, the days are way shorter, and the lights are on most of the time. So the "turn-off" thing was very annoying and it seems to me, more and more frequent, in random intervals but sometimes under 2 minutes. (but it might be just an impression).
Since some minutes after the software update, I haven't noticed any spontaneous turn-off, and I'm keeping my fingers crossed that it was the solution.

I will try to keep you updated at the result of this downgrade in the coming days.

Nevertheless, I'm a person that like to have the last firmwares, so I'm quite bugged by that problem.

The good thing is that it allowed me to discover the forum, that I wasn't aware of, and to see that there is a lot of support that one might not get at all when going with pure chinese solutions !

My config looks as below:

1st Dimmer 2 with N - 3x Osram Parathom DIM PAR16 100 36° 9,6W 2700K GU10

2nd Dimmer 2 with N- 3x Osram Parathom DIM PAR16 100 36° 9,6W 2700K GU10

3rd Dimmer 2 with N- 3x Osram Parathom DIM PAR16 100 36° 9,6W 2700K GU10

4th Dimmer 2 with N- 3x Osram PARATHOM DIM Retrofit CLASSIC A 12W 2700K E27 + 2x similar OSRAM bulbs but 9W.

I'm very satisfied with those bulbs, as they have a high brightness and very good dimming ability.