one starts flickering after some time on any percentage level. I measured it with 100% while flickering and the voltage dropped to 119V~. When i turn it off an on it has again for some time correct full voltage of around 228V~. Same for any other percentage level. First working fine after some time flickering starts
one was connected without a neutral wire and i could just measure if the input L and output voltage L’ have zero difference when on 100% but actually I see a voltage difference of 7V~. The LEDs work for most of the time but some time flicker for a short moment.
Not surprised by your readings. Aqara dimmer switch is not a voltage dimmer, it’s a MOSFET dimmer, which means it just cuts the wave with a frequency depending on the dimming. Your meter probably shows garbage, because it expects a sine (if you measure your 230V anywhere else, it will actually have occasional jumps even to 240V, which will show on an oscilloscope, but your meter averages the sine and shows 230V).
If your light is flickering try:
limiting the dimming range (maybe the lower limit is too low),
change the dimming setting from reverse phase to forward phase (or the other way around),
I know it is a phase cut dimmer that’s why I measured at 100% where no cutting should happen and it should reach around 230V~.
For second one the Flickering happens at any % after random times. I see clearly that at the time of flickering that the voltage dropped for some reason and is back correct when I switch it on and off to 100% again.
Changing the dimming setting did not help.
And ofcourse the lights support dimming in actually both ways.
I checked with 3 different lights. So issue is clearly on the Aquara Dimmer.
Why don’t I see any issue with a conventional switch compared to 100% on the Aquara Dimmer?
For second one: The flickering starts for example after 45 Minutes. The Voltage was fine for this 45 Minutes when ever I measured it but then suddenly dropped ( still at 100% setting) and then stays there and the LEDs flicker until I turn the dimmer off and then on.
Hello, welcome to the forum. Theoretically, there should be potential here, it controls the state of the relay, since in this version you do not use the dimmer power supply (phase, zero).
Also check the support for dimming the lamps. I have lamps that dim partially, then start to live their own life (blink). This is especially evident in the case of use without zero. If possible, use a scheme using zero and phase.
Regarding the dimmers connected with neutral - have you measured voltage on lamps on a dumb switch? Maybe there’s something in the installation that lets some voltage through N and then it will affect the Aqara dimmer. And it makes the lamps live its own life, just like @gafich10 said.
Or maybe you got a bad batch of dimmers, because mine work perfectly with my lights.
I have also measured the voltage between L and L’ at 100% and when there is no flickering it reports around 0-5V~ as somehow expected. But when I see it flickering then there is a voltage of 124V~ measured. So the drop is caused by the Aquara Dimmer between L and L’.
The voltage drop on the dimmer looks ok, it needs to draw power because there’s an electronic circuit running continuously. For the same reason, a dimmer without neutral will still let some current through while OFF, and more sensitive lights will be dimly lit.
But the flickering and dimmer malfunction (with N) is still quite suspicious, my only guess is that something in the electrical installation (on the same breaker) is messing with the N, which makes the dimmer malfunction.
Or you have some loose contacts in the whole circuit and it makes the N unstable. A friend of mine had to redo the switches, because the cables were too short and there were loose connections. He didn’t use Aqara dimmer, but still experienced occasional light flicker or electronic device malfunction
I have a suggestion. To rule out any electrical wiring problems you may have, make a laboratory stand connecting a dimmer to a regular plug and a lamp connected to it. If this circuit causes dimming problems, then file a complaint about the dimmer with the support service. I emphasize once again that the lamp on the packaging must have the information “supports dimmer”.
Did it start after some firmware update or just on its own?
Btw, if you’re using it with no neutral, then the wireless activity can cause some noise on the MOSFETs. It’s also a common problem when you use the ESP32 - the built in PWM dimmer is very sensitive to voltage fluctuations when using shared power converter for the ESP32 and the lights. The WiFi or Zigbee works by sending bursts of energy, even as powerful as 500mA, so it can affect the output if it doesn’t use an isolated neutral/ground
No i have this issue from the beginning it just occurs after some random time once turned on. There is no firmware update available. On this light I use it with neutral wire. I still have the other case were i have no constant flickering after some time but just some short flickering from time to time. This one is really hard to capture on an Oszilloskop, need to see if I find a way.
I honestly, if your whole installation is correct (that is, there is nothing causing some “noise” on N), then I’m out of ideas.
Maybe the dimmer is faulty (although I know PWM dimmers can be fussy, my PWM dimmer of another brand didn’t turn off my LEDs 100%, there was always a very dim light), maybe your lights are to sensitive to power changes.
I had to limit the dimming range of the H2 dimmer to 81-100% because my bulbs were completely off below 80%. But maybe in case of my bulbs/installation it’s just more resilient and just doesn’t flicker.
So I’m sorry, but I don’t know how to help you. Maybe installing a capacitor before the lights to smoothen the wave could help, but I don’t guarantee it will fix the problem in your case
It also cuts half of a sinus wave (here the negative one) at random times but only for a short period of time and then works again. Same issue with two installations. One with neutral one without.
This is with a Mean Well PCD-60-1400B LED driver.
Hi there, as this issue has already been resolved with our support team via email, we’ll be closing this topic on the forum as well. If you have any further questions or run into any other issues, please feel free to reply directly to our support email. Thanks for your support and understanding!
