Question about Honeywell HE220A1019 Whole House Humidifier Humidifier

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Wire Honeywell HE220 to N8MPN/L, *8MPN/L furnace control board

I have not tried anything yet, just researching. Please correct me if I'm wrong, but here is what i understand so far: The wires on the back of the humidistat and humidifier are both black - indicating it doesn't matter what they are connected to. - they need a complete circuit to operate correctly - but that is all. I plan on connecting the humidistat to the HUM 24 VAC (also 115[i think] HUM available). The other wire out of the humidistat connects to the humidifier, and the humidifier connects to a neutral connector on the board. The neutral doesn't feel right, but advice online (not for my particular model of furnace, but general humidifier to furnace connection advice) says connect the humidifier to humidistat and COM on the furnace circuit board. I have not seen one of those. Here is the manual for my furnace - http://icpindexing.toddsit.com/documents/086477/44101261106.pdf - circuit board diagram is on page 43. Here is the manual for the humidifier - http://customer.honeywell.com/techlit/pdf/PackedLit/69-1570.pdf Thanks in advance for any help!

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HI

I have similar isssue with HE220 but in my case the water run through all ththe time, even when unplugged from the power outlet.
Would that be solenoid issue?
the unit run fine for last season so the wiring is fine.

Any ideas would be greatly appreciated.

Posted on Nov 12, 2012

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: HONEYWELL HE260

Unless you are using a current sensing relay or sail switch, you need to get the humidifier power from the blower motor supply so it only operates when the blower is on.

Since you can manually control the humidifier, there is not a fault with the solonoid.

Posted on Oct 19, 2007

Ken Thomas

  • 118 Answers

SOURCE: I've installed a Honeywell 220A whole house

push sail switch forward by hand to see if that is the problem.
Remove two wires at humidifier and connect them if it starts than it is in wiring, humidistat, or transformer.

Posted on Oct 28, 2009

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