Humidifier running all the time, even when furnace is not running

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Old 11-04-15, 09:07 PM
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Humidifier running all the time, even when furnace is not running

I've recently moved into a new home and found that my humidifier is running all the time, I would like to have it wired to turn on only when the blower is activated, could anybody help me with this dilemma, I've uploaded wiring schematics for both my furnace and humidifier. Currently my humidifier solenoid is taped in a C spot and R spot on the bottom of my furnace circuit board.
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Old 11-04-15, 09:18 PM
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Welcome to the forums.

You'll be following the diagram below but I can't read the board diagram. I need a bigger version, link to that diagram.... ID should be on it, or a make and model of the furnace.

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Old 11-04-15, 09:24 PM
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Thanks for the quick reply, the furnace is made by allied air I believe, model number is A95UH2E090C16S-02. I can try and re-uploading the wire diagram using another method, hopefully I can get it clearer
 
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Old 11-04-15, 09:32 PM
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Wont let me remote link to the board so the direct link is; https://s-media-cache-ak0.pinimg.com...96f565657f.jpg
 
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Old 11-04-15, 09:33 PM
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The text says....
HUM= unpowered normally open (dry) contacts.

In the piece I highlighted below.... it looks like the HUM terminals are 1 and 2. The text says ACC(3) is 120v out to optional accessory. I can't confirm that what I labeled as 1 and 2 are the hum terminals. Are there any other markings on the board ?

Is there a part number on the board ?

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Last edited by PJmax; 11-04-15 at 09:55 PM.
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Old 11-04-15, 10:03 PM
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I snapped a few photos of the board earlier today, I'll try and find a serial number for it, but here are the images I have thus far; https://s-media-cache-ak0.pinimg.com...d0173a01d3.jpg and https://s-media-cache-ak0.pinimg.com...3617b61fe5.jpg
 
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Old 11-04-15, 10:29 PM
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Ok.... all set. Pictures were perfect.

Leave your one humidifier wire connected to C.
Connect the other humidifier lead that was on R to one of the HUM leads.
Connect a jumper from the other HUM terminal to R.

All your doing is using the HUM terminals to open the R wire.

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Old 11-04-15, 10:48 PM
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Awesome, thanks for all the help, it will be a nice change not hearing running water in my basement constantly, which was a pretty scary to hear in the middle of the night in dead silence. Does it matter if I connect the humidifier to the left or right side HUM lead, or is it interchangeable with the R jumper? Thanks again, appreciate the help big time!
 
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Old 11-04-15, 10:51 PM
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Since the HUM terminals are isolated.... there is no polarity to the connections.
 
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