Question about Honeywell Power Humidifier: Furnace Humidifier/ Humidifier

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Water runs constantly from the R0 filter of my Honeywell HE440A humidifier into the floor drain. Why? There is also an overflow drain in the humidifier tank that goes to the floor drain as well.

There are two water lines running from the bottom of the R0 filter. One to supply water to the humidifier and a second drains water constantly into the floor. What is this second line, should it be wasting water constantly? If not, how can I fix it?

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  • 2 more comments 
  • Roy Roberts
    Roy Roberts Jan 02, 2015

    This is not water draining from the humidiier tank with a stuck float. This water tht does not even get to the humifier tank. Instead the R0 filter has two outlets, 1 to fill the humfier tank with the float and a second iine that is causing the problem.

  • Roy Roberts
    Roy Roberts Jan 02, 2015

    The problem line is NOT the one going to the humifier. So, a stuck float is not the problem. This is a second line from the R0 filter that drains constantly and does not go to the humifier.

  • Roy Roberts
    Roy Roberts Jan 02, 2015

    I think I finally got it.

  • Roy Roberts
    Roy Roberts Jan 02, 2015

    The copper line from the R0 filter goes to the humidifier tank. The plastic lince from the R0 filter drains constantly and appears to have no purpose. How do I stop it from wasting water?

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Posted on Jan 02, 2017

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  • 279 Answers

SOURCE: HE440A Steam Power Humidifier

The most common cause of overflow is when hard water deposits build up and prevent the float from closing. You'll have to open up the unit, make sure there's no water in it, and clean out any mineral deposits.

The problem with these steam producing units is that there is no built in way to remove those deposits automatically. The water comes in, evaporates, and leaves anything else that was suspended in it behind.

Posted on Nov 14, 2007

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  • 1 Answer

SOURCE: Honeywell HE440A steam power humidifier

Honeywell has had lots of problems with this humidifier. They are coming out with a completely redesigned steam humidifier that will be available in a month or two. If you know who installed it (through equipment stickers and such) you can probably get them to swap your old trouble prone unit for the new design for just the labor. If they won't, then push them to talk with their Honeywell distributor about it.

The problem is most likely a stuck float in the humidifier. There are two floats that run up and down. One that tells it when to add water, and one that is a safety. They both tend to get stuck with mineral deposits.

You can fix it by unplugging the humidifier, turning off the water, draining the pan (unscrew the drain on the bottom a few turns), disconnecting the water lines and wires (2 molded plugs and 2 screw terminals-don't worry about if they get swapped). There should be a couple of screws that lock it into the ductwork such that when you remove the screws you can pull the whole unit out to see inside the water tank. Then just clean everything out well and put it back together in the same order.

You really do want Honeywell to get you a new humidifier though.

Posted on Nov 17, 2007

  • 9 Answers

SOURCE: Honeywell HE220A water not reaching humidifier

Replace the Valve on the unit. Check the small filter inside of it where the waterline attaches first. If its clear and you have lots of flow from the 1/4" line the replace the valve.

Posted on Jan 19, 2009

HVACjake
  • 22 Answers

SOURCE: Honeywell HE260 leaks somewhere

Neither, even if the solenoid or humidistat stick, it should always drain properly. Is the unit mounted on the cold air return duct or the supply plenum? If it's mounted on the supply plenum, the water panel might be getting blown forward and spilling the water. High efficient furnaces also can leak water on the floor if its drain is restricted. If hum. is mounted on return duct make sure drain is clear by blowing through it. On Honeywell hum's I've seen the rubber hose from the solenoid valve to the distributor tray leak too, check the rubber 1/4" hose.

Posted on Jan 21, 2010

  • 2 Answers

SOURCE: water constantly running in honeywell humidifier

I has the same problem with my HE360 unit. The unit was in fact miswired. The head unit red wires were connected directly to the blue solenoid wires, and activated the solenoid without any signal from the humidistat. As soon as the unit is plugged inn, the water starts running without any signal to the unit. If your unit is miswired, the soleniod blue wires need to be cut and connected to the red crimp connectors.

Posted on Oct 18, 2011

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The most common cause of overflow is when hard water deposits build up and prevent the float from closing. You'll have to open up the unit, make sure there's no water in it, and clean out any mineral deposits.

The problem with these steam producing units is that there is no built in way to remove those deposits automatically. The water comes in, evaporates, and leaves anything else that was suspended in it behind.

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Honeywell HE440A steam power humidifier


Honeywell has had lots of problems with this humidifier. They are coming out with a completely redesigned steam humidifier that will be available in a month or two. If you know who installed it (through equipment stickers and such) you can probably get them to swap your old trouble prone unit for the new design for just the labor. If they won't, then push them to talk with their Honeywell distributor about it.

The problem is most likely a stuck float in the humidifier. There are two floats that run up and down. One that tells it when to add water, and one that is a safety. They both tend to get stuck with mineral deposits.

You can fix it by unplugging the humidifier, turning off the water, draining the pan (unscrew the drain on the bottom a few turns), disconnecting the water lines and wires (2 molded plugs and 2 screw terminals-don't worry about if they get swapped). There should be a couple of screws that lock it into the ductwork such that when you remove the screws you can pull the whole unit out to see inside the water tank. Then just clean everything out well and put it back together in the same order.

You really do want Honeywell to get you a new humidifier though.

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