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  #51489 Posted 1 Month, 1 Week ago
GeeWiz
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Hi,

I am trying to install a new dimmer switch in a bedroom.
The ceiling fixture is a light/fan combo and has 4 wires coming out of the switch box: ground, black, red, and white. The old dimmer/motor control has 3 wires: red, blue, and black. It is connected to the box as such; the dimmer siwtch is listed first. red-red, blue-black, black-white.
The new dimmer switch I purchased has 4 wires: green(ground), black, blue, and yellow. I connected it as such; the switch listed first:
Green-Ground, Blue-Black, Black-White, Yellow-Red.
I tested the new dimmer for 5 minutes. So then I put the dimmer back into the wall box and when I tested it again it didn't work. I pulled the box back out made sure the caps where secure. Turned the breaker back on and the LED indicator on the new dimmer lit up, letting me know it was on but the switch was off, when I tapped the switch the LED indicator turned off, which let me know it was on but the light didn't turn on. I then heard a short faint sizzle sound. Turned the breaker off and smelled the switch. It had a smokey/rust smell.

My thoughts are that when I put the dimmer back in the box, which did require a bit more force then the other wall switches, it may have pushed one of the wires onto something on the board inside the switch causing it to short. My rationale is that when I turned the breaker back on and touched the switch the LED indicator turned on and off but the lights never came on.

Here is the switch I bought from HomeDepot. http://www.homedepot.com/h_d1/N-5yc1vZ66xgs/R- 100662449/h_d2/ProductDisplay?langId=-1&storeId=10051& catalogId=10053

Any advice or thoughts on my situation is greatly appreciated.
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  #51491 Posted 1 Month, 1 Week ago
MyToyotaSucks
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Posts: 265
graphgraph
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OK first i would make sure the wall box is big enough for the new switch, some new switches are bigger and wider, which can it the box and short out.

The other thing is good that you tried to follow the wiring with the old switch, but do confirm the wiring at the fan. And then wire the new switch accordingly.

If you find that the switch is too big for the box then you should find a smaller switch to fit the box, cause changing the box can be a pain.
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