I had (2) 3 way switches in my dining room. They worked fine.
I replaced one of them witha 6643 dimmer.
Now the original 3 way switch acts as an on/off switch & the dimmer acts as a brightness control.
If I flip the original 3 way switch down, the lights go off & I cannot turn them on with the dimmer switch.
Is this the way it is supposed to work????
Yes, when the 6643 is installed in conjunction with a 3-way switch, the switch will act as a ON/OFF switch. When turned on, it will light to the brightness level currently set by the dimmer.
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