Greetings, I have this variable speed control with Red, Black and Grey wires coming out. It must be connected to a 3 wire supply line, having Red, Black, and White and a ground wire. I'm not sure how to tie the two together, mostly do to the grey wire on the speed control. Will someone please set me to right here. Thanks. Links to photos are below. The third link is the supply.

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That control is not a standard variable fan speed control. Did you get with a certain fan.... as part of a kit ?


TriVar Solid State Motor Controls

 

It was offered as accessary item with AXC bath fan motor (Canada). Here is link to wiring diagram. The part about removing jumper is done. Continental Fan Manufacturing.

Where you see gray at the terminal block is actually the black wire of the supply line. ( There are no 3 wire plus ground with gray wire in them)

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Are you bringing power to the control first and then a three wire cable from the control to the fan ?

 

Well, what you have outlined in color is the 3 wire romex which I wired to the terminal block 1st. I can see grey (black) connection and red you have placed on the control. So now I need to bring power in. So I think I see now that would be tying in black and white wire to the outlet box for power. Is that correct? Thanks Don

 

Yes, controller black to house black power in.

 

Thanks for the help you guys..

 

You're welcome.

 

Just got to say who ever chose to make that lead on the controller gray never read the NEC.

 

Well, the control does not seem to work. Has power but fan motor just hums. The more the control knob is rotated the louder the hum. Any ideas?

 

Possibly a defective control.
I found an alternate diagram for the speed control and it matches what you have.

 

Well I guess I'll have to climb back up into the attic and put the jumper back in and just use as single speed. The controller has been hanging around the house for a few years, never used it.

 

Problem solved... White and black wires reversed at the terminal block.

 

Thanks for letting us know you got it.