Question about Honeywell HE260A1010 Whole House Humidifier Humidifier

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Honeywell HE 260A1010

Want to hook up water selonoid to furnace motor to activate

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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.

Posted on Jan 05, 2009


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If i hook my Aprilaire 400 Manual (not auto/digital) humidifier up straight to a 24v wall outlet instead of to the furnace, will it still work correctly? Or does it need to be powered by the furnace to...

Your humidifier is a bypass type. The only voltage needed is 24vac to open the water valve. Air only flows through the humidifier when the furnace blower is running, and the wet pad will add very little humidity if the furnace is not running and heating the air before flowing through the wet pad in the humidifier.
It is best the water valve is only energized when the furnace is running. Some furnaces have a connector on their control boards labeled HUM for this purpose. Test it's voltage when the furnace is running because some will output 110vac instead of 24vac you need.

Jan 31, 2013 | Aprilaire 400 Humidifier

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Is Aprilaire 500M suppose to turn on when furnace motor turns on?

The humidifier should turn on and off with the blower motor of the Furnace. This can be done by wiring the the humidifier to the HUM terminal on the furnace control board and then stepping down the power with a transformer. If the humidifier has it's own tarnsformer then a current sensing relay can be used by attaching it to the blower motors common wire.

Jan 13, 2013 | Aprilaire Humidifiers

1 Answer

I hooked the humidifer up and water keeps running it dose not stop when furnace stops. What might be wrong?

Hello, this could be tw o different things. when you install a humidifier you need a means of turning it on and off with the furnaces blower motor, this is done by either a sail switch, current sensing relay, or by the transformer being hooked up directly to the furnaces control board. if you do not have one of those three than the humidifier will run continuously untill u manually turn it off at the humidistat. If you have one of those three installed already than the solenoid valve is stuck and must be replaced.

Feb 08, 2011 | Honeywell HE220A1019 Whole House...

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.

Jan 24, 2011 | Honeywell HE220A1019 Whole House...

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Will the water only come on going thru the water solenoid only when it calls for water? Or is it suppose to come on at all times when furnace comes on?

The water should come thru the solenoid valve when the furnace's blower motor turns on, and turn off when the blower motor turns off.

Jan 04, 2011 | Aprilaire 600 Humidifier

1 Answer

I have an Aprilaire 550 hooked up to my furnace,

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Jan 31, 2010 | Aprilaire 550 Humidifier

1 Answer

I have a carrier furnace, humidifier valve popped fuse

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Nov 18, 2009 | Honeywell HE360A1027 Whole House...

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Commonly outdoor wood boilers use a hot water coil mounted in the ductwork above your furnace. In this application the Ruud furnace is still using its blower assembly to circulate the warm air from the boiler to your home. If this is the case. Have your heating guy install a #50 relay on the furnaces blower motor to activate your much needed humidifier. If this is not the case and your Ruud furnace is totally independent of the boiler. Still install the #50 relay in the furnace and manualy activate the fan only feature on your thermostat.
Good luck
HVAC Teacher

Feb 21, 2009 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 560 does not work. No clicks

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.
I found the problem with a voltmeter:  there was voltage at the power terminals on the humidity control terminal board, but there was no voltage at the solenoid valve terminals.  It was hard to push my big wires into the terminal board, but I finally secured the connection!

Dec 30, 2008 | Aprilaire 550 Humidifier

1 Answer

Water flow to my model 600 seems to be too quick. It splashes all over inside my furnace duct and over fills the drain causing water to run all over the floor. Could this be a bad selonoid?

It is not likely to be caused by the selonoid valve. The selonoid is designed to be either open or closed, so if the unit is calling for humidity, it should be 100% open allowing as much water as possible to flow through. In cases of a bad selonoid, it will usually stick open or stick closed, but I have never heard of one allowing too much water through. Check to make sure your drain is clear and that the incoming line to the humidifier is positioned properly on the inside of the unit. If this doesn't solve the problem, it could be that the water line to the humidifier is too large, allowing more flow than the unit is designed for.

Dec 16, 2008 | Aprilaire 600 Humidifier

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