Question about Honeywell HE220A1019 Whole House Humidifier Humidifier

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32001639-002 solenoid wiring confusion

I just recieved my replacement solenoid assembly today. My question: the wiring is not labled and wonder if there is a polarity issue when I make this slice with new solenoid? Appreciate any help. Mark

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No there is no polarity issue, either wire to either one it doesnt matter. Steve

Posted on Dec 21, 2008

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I have a aprilaire model 700 humidifier every year I end up replacing a solenoid. This time I replaced the solenoid but it did not fix the problem. I hear a click at the humidstat but the humidifier...


Apply power directly to the solenoid valve from the transformer and check if the solenoid opens and lets water in, If not then the solenoid is bad. If the solenoid does open up by applying power directly from transfomer then check the wiring make sure it's all tight and that the currentsensing relay/sail switch is good. Also i would check to make sure there is a strainer on the inlet of the solenoid valve and that it is clean, sometimes sediment builds up on the inside of the solenoid and can shorten the life of it.

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http://www.appliancefactoryparts.com/humidifiers/helpcenter/breakdowns/honeywell/honeywell-he360a1027.html
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If you have a separate black transformer supplying the 24 volts, hook that directly to the solenoid. You may also be getting the 24Volts from your furnace circuit board, if that is the case you will see two terminals usually marked HUMIDIFIER on the furnace circuit board (you will need to open your furnace usually 4 screws or so.) There is 24 volts there WHEN THE HEAT IS ON , run two new wires from those terminals to the solinoid and see if it passes water cuz that is when those terminals have voltage. Best way is with a meter though and if you have 24 volts at the solenoid AND no water, it is bad. If NO VOLTS, then could be the the humidistat or a disconnected wire somewhere in the path.

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1 Answer

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Mar 11, 2009 | Honeywell HE220A1019 Whole House...

1 Answer

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Thanks for your question,
first you need to determine if you have 24 volts from the transformer, if you have knowledge of electrical meters then this should be fairly easy, if not then you will need to do a little rewiring to find out if it is the solenoid, first you will need to do is shut the power off to your furnace, then get some t-stat wire, long enough to reach from the solenoid to the transformer, splice together the new wire to the wire from the solenoid, now take the other end of the wire, take the leads off the transformer (low voltage side) and hook the new leads to it, make sure the water is on, now turn the furnace back on, and if the solenoid is good the water will flow, if it doesnt, then you will need to replace the solenoid, if the solenoid does work then you know your problem lyes with the Humidistat, and you will have to replace that, but you need to determine if you have 24 volts from the transformer first, hope that helped, let us know and please rate this, thanks again ,
mr.grzz

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1 Answer

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I just solved a problem with mine today.  One of my low voltage power wires to the humidity control had a bad connection.  I reconnected it and I could again hear the solenoid valve clicking as I adjusted the dial control.
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