Dimming lights in one room makes lights in another room flicker

[appletree]

Hi,

I recently did a complete house refub, including entirely new electrical wiring and fuse box. Unfortunately the builders (who supplied their own electrician) turned out to be a bunch of cowboys.

They left about a month ago, and today I noticed something very strange in the first floor lighting. There are four bedrooms in the first floor, and every room has a bunch of LED down lights that are controlled by a dimmer. I noticed that when I turn the lights on in two rooms, and turn the dimmer in one room, the LED lights in another room flicker.

Any idea what might be causing this? I an reluctant to call the cowboys back. I am thinking of getting another independent electrician to check the wiring, but I thought I'd ask here first.

Thanks in advance.
[automerge]1577671974[/automerge]
Here is the video of what is happening.

https://spark-mybigbucket.s3.eu-west-2.amazonaws.com/flickering_lights.mp4

 

[joesparky]

Wago box

I'm sure it worked.
But its like, when installing them, if people in the field, have to add things onto the product to assure there is no potential for customer call back, then that product needs to be doing that addition from the factory.
Because knowing that the potential for flickering lights exist, and a customer would see that as "the electrician wired up something crazy"
then one has to explain that its the device, thats just doing too much.

 

[Mike Johnson]

For those that are interested, I should have said Capacitors not Resistors, can't seem to find them on the RS web site at the moment, but "RIFA PMR209" was their reference and are the same width as the inside of a Wago lighting box makes for a very neat installation.

 

[Let me think]

Possible Poltergeist?...sorry seen this on TV the other night. Still gives me the creeps after all these years....