Hi all,
i just got 90 white series dimmers 
and have test installed two of them.
But it seems i can’t get two smart switches to work together on the same load.
Both switches are on - the light (LED) is on - I can’t switch it off on neither switch.
Thanks
–Peter
@peter.kozak the first thing I see is no ground in the first photo. What hub are you using and how is the second switch setup to control the switch with the load?
Thanks for answering, Lance. The ground was just disconnected for the photo. The switches are not connected yet to a hub. (Home Assistant - giving me some trouble - might open another thread related to that).
I understand why I can’t switch off the light on the first switch nor the second.
I configured both to be dimmers and both are in smart mode (Up + 4x Config)
I am not sure I am following? You have figured out what the issue is? What bulbs are you using?
I had before a UBP (HAI) dimmer and a HAI Aux Dimmer in there. As I understand, i can’t use the (Aux) Dimmer as a dumb switch.
I switched the main ABP Dimmer to the first white series. Single works fine dimming and turning of and on. I then removed the aux switch and installed the 2nd white series. Now i can’t switch anything on or off neither on neither of both white series switches.
In this configuration, how do i need to configure the switches? Both have power. Neither Aux nor Dumb works. I tried also Smart (up and 4x Config)
Currently connected as load is a LED Ceiling Bulb
If the bulb is not a smart bulb and you have not connected the switches and bulb to a hub you will not be able to control the light. If you have the switches in smart bulb mode it disables the control of the load on the switch. Both switches and a smart bulb would only be able to be controlled through an automation configured in a hub if you are attempting to use smart bulb mode.
ah ok, i misunderstood smart bulb mode then - however i read somewhere that smart bulb should be turned on when using two smart switches on the same load (also if load is non smart).
I think the problem is in the wiring. If i disconnect the 2nd switch - i can control the light from the first dimmer without any problems. The question is : why can i not continue to switch the load on or off from the FIRST white series dimmer as soon as I connect the 2nd one.
Can you post pictures that show the inside of each box as well as the current switch connections?
Without being able to see the wiring in each box, folsk here can’t do much to help troubleshoot any potential wiring issues.
Topic updated. Two switches working together are a 3-way.
Unless the switches are in Europe where they use N-way to refer to the number of switches rather than the number of terminals.
Sure,. lets start over - i did also a few measurements using a voltmeter.
Junction Box 1:
Switch 1 Connection:
Junction Box 2:
Switch 2 Connection:
The result of this cabling is: The ceiling light is ON and can not be powered off from either switch.
The switches are NOT connected yet to a hub.
Does this help or do you want me to measure/take some more details?
I’m not going to assume your labels are correct, so let’s test something.
In Box 2, remove the black conductor from the Load terminal. Does the light go out? If it does, that will confirm that the Box 2 switch is in the Smart Bulb mode, which if you want to physically control the wired load, it shouldn’t be.
Smart bulb mode is used for when smart bulbs which need to be powered full time and are then turned on and off via a hub automation or by binding/association/whatever you call it for the white series. @Lance_Inovelli asked what type of bulbs you are using but I didn’t see a response. How you go about this depends upon what type of bulbs you are using.
When you have the Smart Bulb Mode turned on, pressing on the switch will NOT cut the power to the bulbs, which probably explains your issue.
You should never have 2 switches in parallel connected to the same load. That’s not how you do it.
You can put the second device in without a load connected and then via the hub any time it’s level changes change the primary device to that same level. For red and blue, you can associate them to each other so they control each other directly over zwave or zigbee. I have no idea if that can be done with a white switch but if it can then that’s another option.
There’s also the option of using an aux switch in the second location.
Not according to inovelli:
Multi-Way with 2x+ switches refers to having two or more smart switches controlling your load (light). In other words, there are no dumb or aux switches, but rather all switches controlling the load are smart switches.
3-Way = Two (2) switches controlling one (1) load
4-Way = Three (3) switches controlling one (1) load
5-Way = Four (4) switches controlling one (1) load
The load is only connected to one switch… see photos above
Removing the load (of course) turns off the light Both switches stay powered.
Removing the line (of course) turns off the 2nd switch.
is how they are cabled.
The LED bulb is dumb - there was a reference in the documentation that if multiple smart switches control the same load - the switch needs to be programmed with UP + 4x Config (Smart Mode).
Im not sure if that’s the same then as the SmartBulb Mode).
I understand that one of the switches can’t switch the light - without a hub - but my expectation would have been that at least the 2nd switch can be used.
Thank you all!
After a factory reset of both switches - i got it working without any further changes in cabling.
Result: Light can be switched from switch 2 on and off
Switch 1 is powered.
I will now try to add them to HomeAssistant
Glad you got it going. The wiring looked correct to me. It was just the Smart Bulb Mode being turned on for the load switch. The factory reset turned that off!
7 posts were split to a new topic: Virtual 3-way White Series
Awesome. Will try to get it setup now. Will create a process for doing this in HA while I do it as I’m pretty process oriented and I’ll be doing this setup in a few other spots as well. Will share the process once I have it ironed out.
I was under the impression that 3-way dimming would only work with 1 smart dimmer (Mine is a VTM31-SN Matter/Thread) and an Aux switch? I would like to see LED status at both ends. Can 2 smart switches dim with LED status supported on both?
