HE220A 1019 wiring problem


  #1  
Old 11-16-07, 04:49 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
HE220A 1019 wiring problem

I am hoping someone can help me. I am an average DIYer and not afraid to tackle minor to moderate projects.

I am replacing a Lobb WA2 humidifier with a Honeywell 220A humidifer. I have the unit installed on the return side with the bypass on the hotair/supply side. Everything was going good until I tried to test the unit.

When the supplied Honeywelll humidstat is turned off the water turns on. If set the humidstat to an number or to on the unit turns off.

I have a mid to late 80's Carrier furnace and hooked up the the transformer the same way the Lobb transformer was. It is wired to the EC1 and EC2 terminals on the board.

Please help!

Furnace Label


Control Board
 
  #2  
Old 11-16-07, 05:30 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
at the humidistat, is one set of wire going to NO or NC tab??

Sounds like it's on NC.
 
  #3  
Old 11-16-07, 06:37 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
Originally Posted by Jay11J
at the humidistat, is one set of wire going to NO or NC tab??

Sounds like it's on NC.
Yes, one wire from the transformer is going to the NC tab and the other is going to the C tab.
 
  #4  
Old 11-16-07, 06:40 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
Move the wire to NO.
 
  #5  
Old 11-16-07, 06:54 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
The unit came prewired with leads off the C and NC posts. All the other posts were snapped off by the factory.

should I just remove the wires from the NC post and solder them to what is left of the NO post?

BTW the Humidistat is a Honeywell H8908B.
 
  #6  
Old 11-16-07, 07:15 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
I took mine off, and I had to look really hard.. The NC is easier to get at, the NO is back futher into the humidistat.

My post are gone as well.. I thought they were all there, but it's not.
 
  #7  
Old 11-16-07, 07:18 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
Originally Posted by Jay11J
I took mine off, and I had to look really hard.. The NC is easier to get at, the NO is back futher into the humidistat.

My post are gone as well.. I thought they were all there, but it's not.
Just to clarify I should just move the wires from the NC post and attach them to the NO post however I can?
 
  #8  
Old 11-16-07, 07:33 PM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
Go ahead and move it..

Do you have a meter? I'd check out to make sure it's not doing a reading in OFF, and reading above set point.
 
  #9  
Old 11-16-07, 07:37 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
I believe I have an old analog one laying in my toolbox.

I will go check it out and let you know what happens...

Thank you for the help thus far.

Eric
 
  #10  
Old 11-16-07, 10:02 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
Jay,

I have looked at my unit again and was mistaken. The two posts that I have are C and NO. When I remove the wire from NO and touch it NC the unit appears to function normally. However, I am at a loss on how to attach it permanently to the NC post.

One other question, what am I missing in my system that I have to rig this thing to work? Do I need a sail switch or some other device. I am just wondering why honeywell is making this thing so darn hard to install. I had the unit and water connections made in about and 1 hour. I have spent over three times that messing around with the darn electrical on it.
 
  #11  
Old 11-17-07, 04:39 AM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
Honestly, I'd call Honeywell and ask for a new humidistat, you shouldn't be messing around making it work.. Mine worked the first time around.

I am sure they will be more than happy to send you a new one.

If you have any issues, please let me know.. I'll see what I can do.
 
  #12  
Old 11-20-07, 08:54 AM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
Jay,

Thank you for all your help. I was able to get it working. It took about an hour and 3 different techs at Honeywell Tech support but I got it working and didn't need a Sail Switch or current sense relay.

Thanks again for help.
 
  #13  
Old 11-20-07, 11:46 AM
Jay11J's Avatar
Member
Join Date: Sep 2001
Location: Rochester, Minnesota
Posts: 16,984
Upvotes: 0
Received 0 Upvotes on 0 Posts
What was the problem? That way we know, or at least I will know for down the road if someone else has the same issue as you had.
 
  #14  
Old 11-20-07, 08:49 PM
727driver's Avatar
Member
Thread Starter
Join Date: Nov 2007
Location: Detroit Metro Area
Posts: 59
Upvotes: 0
Received 0 Upvotes on 0 Posts
First they kept assuming I was using a plug in transformer. I used the wired transformer in the box and had it hardwired to the furnace's control board. The removes the need for a sail switch and a current sensing relay.

The other problem was I had one wire from the water solenoid valve going to the C post and the other wire going to the NO post. (this is how the Lobb WA2 was wired)

The Honeywell needs the following wiring (wire it in series):

One wire from the transformer should go directly to the water solenoid valve.

The other wire from the transformer should go directly to the Common on the humidistat.

Lastly, the other wire from the water solenoid should go to the Normally Open post on the humidistat.

I am happy to say I have gone from 10% humidty to a more comfortable 35% in my house.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: