HS200 installation - tip needed
Trying to install a smart wifi switch.
Existing is a normal switch. Coming from the wall are 2 black wires (Line/Load), a copper ground wire and neutral.
Wifi Switch has neutral (white), 2 black wires (Line Load) and green (ground)
I connected copper from wall to green from new switch.
I connected the neutrals (white) from the wall to the white on the new switch.
The instructions say, line and load from the wall can go to either 2 black wires on the new switch.
Connected everything up as the above got it all on wifi and everything.
An hour later, I noticed lights on the same circuit breaker, were very dim. (different rooms, but same circuit)
I took the Wifi switch out and put old one back in and all was well.
What would cause the other room lights on same circuit breaker to go dim?