Aprilaire 600 not working

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  #1  
Old 01-11-15, 11:35 AM
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Aprilaire 600 not working

First off I would like to say, I'm not sure when the last time this thing worked. But the house is extreamly dry and we have tons of static. So, I ventured to the mechanical room and the humidifier is dry and crusty. I thought the best place to start is to make sure it's wired correctly. Please see my attached "hand drawn" wiring diagram.

Your help is much appreciates!
 
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Old 01-11-15, 09:14 PM
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Welcome to the forums.

Your diagram is a little tough to read.

I can see the R/C connection to the furnace.
I can see the wiring going to the humidifier.
I see the Hawkeye 908 current sensing relay.
At the top of the diagram there are two wires going to ? and it says "grounded to copper"?
Those two wires should be going to a humidistat and should definitely not be connected to ground.
 
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Old 01-12-15, 05:06 PM
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Closer look

Thank you for the reply! Oops you're correct, the green jacketed wire that I had listed going to a ground is actually going up through the floor, I assume to the himidistat. Does this look to be wired correctly? If so, maybe I have a bad solenoid. How could I check this? Also, there are two red lights on the adjustable sensor that aren't lit? Not sure if they are supposed to be?

Thanks again for your time and help!
 
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Old 01-12-15, 05:30 PM
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The circuit is a loop and looks to be wired correctly. Wire colors are not important and there is no polarity as this is AC. If the loop is open.... the humidifier won't work.
You would connect the two humidistat wires to test the circuit.
You would connect the two current sensor wires to test the circuit.

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