When the tech installed my central air, all I had was a 3 conductor cable going to my thermostat. So I cannot use the fan feature on the thermostat,
So I installed a 4 conductor cable replacing the 3 conductor cable.
What I do not know is where to connect the green wire on the board WHITE ROGERS 50A50-241 to make that just the fan run without the compressor coming on.
Thanks
Jeff

The "G" will connect to the green wire at the thermostat and the furnace.

Quote:

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Originally Posted by acetc

The "G" will connect to the green wire at the thermostat and the furnace.

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Thanks for your help.
What I notice is that the Y (yellow wire) joins to a green wire that goes to the G terminal.
Thanks
Again
Jeff

What I notice is that the Y-yellow wire is joined with two other wires namely a green and red and the green goes to the G terminal

The yellow should not be connected to the green wire, they did this to bring on the fan with the a/c.