Question about Honeywell HE360A1027 Whole House Humidifier Humidifier

2 Answers

Humidifier intermittently won't shut off with blower

I've just installed a Honeywell HE360A with a H8908B-1002 Humidstat and an A50 current sensing relay on the common blower wire. The humidifer kicks on with the blower no problem. But the problem is that it will not shut off when the blower goes off. Actually, it does shut off occasionally but 9 times out of ten I have to manually shut off the humidifier from the humidstat. This doesn't make much sense at all to me because I thought the A50 was part of the circuit and if there is no voltage, it must shut off, right? (I've check and re-checked the wiring and it is is correct, see figure 7 page 4 at this address, https://key8361.keyrewards.biz/HE360_Product_Data.pdf) Also, I've made sure that that A50 is more than 3 inches from any other wiring in the furnace so there is no interference. I'm really stumped here. Do I have a bad relay or could this be somthing else? Any help or suggestions is greatly appreciated.

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  • Anonymous Dec 12, 2007

    This is my first winte in this home. During my "winter" check-up, my heating/air service tech told me the humidifier was fine, although I had not yet been running it, and to set the humistat at 30. It has a new humidifier pad.

    The problem is that the fan and water are running constantly, not just when the furnace kicks on. I don't want to call the tech until I know what I'm talking about because I don't want to have to pay for an additional service call. If this problem existed when he was here earlier, I think it should be covered under that visit. Could this be an electrical issue? Or some type of faulty sensor? -- Thanks!

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ANY HOME HUMIDIFIER SHOULD OPERATE ONLY WHEN THERE IS A "CALL FOR HEAT".

Posted on Apr 27, 2007

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THAT MODEL COMES WITH A BUILT-IN AIR FLOW SWITCH (IF I RECALL CORRECTLY) THAT CAN GO BAD ... IN THE OLD DAYS WE JUST POWERED THE HUMIDIFIER BY CONNECTING IT TO THE LOW SPEED (FOR HEAT) OF THE BLOWER MOTOR. HONEYWELL HAS HAD PROBLEMS WITH THEIR RESIDENTIAL AIR-FLO SWITCHES ON HUMIDIFIERS AND THEIR ELECTRONIC AIR CLEANERS. AND THEY ARE THE HIGHEST PRICED ON THE MARKET.

Posted on Apr 27, 2007

  • Joseph Reckinger
    Joseph Reckinger Apr 27, 2007

    IF THEY ARE SENSING CURRENT THROUGH A SENSOR TO THE BLOWER MOTOR WITH A EXTRA RELAY ... THATS HONEYWELLS WAY OF GOING THINGS THE HARD WAY AND THEIR GREAT NEW IDEAS FAILE ALL THE TIME.

    HAVE A REPAIRMAN WIRE THE HUMIDIFIER TO THE LOW SPEED SIDE OF YOUR FAN RELAY. IF IT IS 110v MOTOR IN THE HUMIDIFIER AND/OR WATER SOLENOID.
    THEN THE HUMIDISTAT INTERUPTS THAT CIRCUIT.

    Is you water solenoid 24v or 110v that is the first thing to know to get rid of the extra parts honeywell enginners into things to make money when they fail.

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1 Answer

Water constantly runs when furnace is on or off. I wired it exactly how the diagram said but the water never shuts off.


Hello, In order for the humidifier to turn on and off you need either a sail switch or current sensing relay. A sail switch senses air flow and will turn on the humidifier when the blower motor kicks on and a current sensing relay senses current through the blower motors common wire. If you have either of theses hooked up already and the solenoid valve remains open then the solenoid valve must be replaced.

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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.

Oct 19, 2007 | Honeywell HE360A1027 Whole House...

1 Answer

Wired a new 360 through Hum blew 3amp fuse. How to wire so it doesn't blow fuse. Have open EAC and EAC2.


Review figures 5, 6 and 7 on the installation instructions and compare with how you wired your installation.
The red wires are not used if you use a mechanical humidistat, (are used with electronic humidstat - supplies 24 volts and go to "hot", "commod" on humidstat). Yellow wired to "Hum" whether electronic or mechanical humidistat used.
If using sail switch or current sensing relay, cuts into one of the yellow wires. - One yellow goes directly to humidisat, then comes out of other side of humidistat & runs to to relay (or sail switch), and comes out of relay (or sail switch) and runs back to humidifier.

Dec 17, 2010 | Honeywell HE360A1027 Whole House...

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I was told by the technician tha insalled my funace that I could wire te humidistat to it bu I cant remember what teminals to use the terminals are lettered G W R Y C the thermostat uses W R Which one...


None of these.

Coming off the humidifier you wil find 2-red and 2-yellow (through a plug).

The red supplies 24 volts and is wired to the "hot" and "common" terrminals of an electronic humidstat. (They are NOT used if using a mechanical humidstat.)

The 2-yellow are wired to the "HUM" terminals of the humidstat (either mechanical or electronic).

If you are using a sail switch or current sensing relay, it cuts into one of the yellow wires. (Yellow from humidifier to to humidstat. Then from other terminal of humidistat yellow runs to to relay (or sail switch). Then from other terminal of relay (or sail switch) yellow back to humidifier.

Dec 14, 2010 | Honeywell HE360A1027 Whole House...

1 Answer

INSTALLED HE360A, FAN MOTOR RUNS, EVEN WHEN FURNACE IS OFF? IS THIS NORMAL


Yes - but it doesn't have to work that way. There are several methods you can use to have the humidifier run only when the furnace runs. Look on the back page of the installation instructions. The method I chose was to install a sail switch. This is a switch with a arm attached which has a "sail' attached to it. When the furnace blower runs, the sail catches the blower airflow and activates the switch; allowing the humidifier to operate.
You can also wire in a current sensing relay (figure 6 on the instructions) or connect the humidifier directly into the furnace motor ignition box (if so equipped. My furnace dates to the late 70's and has no place to plug in a humidifier; which is why I installed a sail switch.)
Now however I probably would go with the current sensing relay option as this looks to be the easiest route to follow. Honeywell has their 32001754-001 avaliable for less than $35 from Sears.

Dec 01, 2010 | Honeywell HE360A1027 Whole House...

3 Answers

Humidifier will not turn on (no fan, no water flow)


http://www.appliancefactoryparts.com/humidifiers/helpcenter/breakdowns/honeywell/honeywell-he360a1027.html
A breakdown diagram of parts etc above.
http://www.appliancefactoryparts.com/content/pdfs/110672-4.pdf
Shows you the HE360A.
To me it sounds like it is wired incorrectly, the solenoid should NOT get too hot at all. The PDF above shows wiring data.

Apr 03, 2010 | Honeywell HE360A1027 Whole House...

1 Answer

Water keeps running to Honewell 360A Whole House Humidifier


You may need to replace the valve that is wired to the furnace that controls the water flow

Feb 01, 2009 | Honeywell HE360A1027 Whole House...

1 Answer

I have a Honeywell HE360A Humidifier and everything is installed now I am trying to wire it. The wiring diagram is very vague. Does anyone know how to correctly wire this? I have the humidifier, a...


Peice of cake: You run the white to sail switch the to common 2. Yrun thr re to humistat switch then to the white on the control board or conact us www.airenergyexperts.net

Jan 31, 2009 | Honeywell HE360A1027 Whole House...

1 Answer

Honeywell HE 260A1010


control board has eac terminal . will provide 110v to hum transformer anytime fan running.

also can pick up current sensing relay to sense blower power up and will then power the Hum. transformer.

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