Aprilaire 600 - maybe incorrectly installed?

Hi, first time here, trying to find some help on my humidifier. We had it installed by someone, and that someone later disappeared, and our unit is not working from what I can tell.
So, this is what the setup looks like





So, the LED light (Humidifier On) lights up when I put it on the test, but never lights just by it self. The water does flow, I checked.
I had it on Blower Activation OFF and ON, doesn't make a difference.
The blower is turned for winter, so the pipe is open.
So, my question, is this a correct setup? The hot air blows from the pipe into the the filter with water, and that suppose to go back into the furnace? Through the filter? Really doesn't make much sense.
Wouldn't I want the unit on the furnace part? so it goes directly into the ventilation? And leave the control module where it is for it to measure humidity?
We're in MN, so it's very dry during winter, I should be cranked all the way up. The skin and the nose bleeds are a pain.
Anyways, please help me out.
Thank you!

 

Welcome to the forums.

The install is ok. The air flows from one side thru the media to the other side. That damper stays open in the winter and gets closed in the summer. The media (filter thing) gets changed every year.

Take the cover off the humidistat and post a picture for me.
I may need you to tell me where the wires go.

 

Thanks PJmax, here is what I have. They seem right. This is a dual zone house.




Never changed the filter, but I don't think the unit ever worked, but I will order one.

 

Good pics. It'll take me a little while to go over them.

That's not a filter. It's called media. It's like a ceramic material... almost a coral.... that absorbs and holds water so that the air blowing thru causes evaporation off of it. Slightly more water than the unit can evaporate is allowed in so that excessive minerals get washed off the media. After a certain amount of time the media gets all white and calciumed up and starts loosing efficiency.

 

Guys, any more ideas, don't want to spend money buying a small one for every room.