Replace button in float valve in kenmore furnace humidifier

There is no flow rating because it would depend on too many factors. What you do need to check is the float valve. The water valve is opening and closing like it should be but the reservoir is filling too much.

Hello, the motor itself wont cause the unit to leak water, the float valve on the unit is what adjusts how much water is coming into the humidifier. If the float valve is not adjusted properly or broken it will cause to much water to enter the humidifierand therefrore overflow. Replace the motor and chexk the float valve to enure it is adjusted properly and if it is stuck or broken replace.

Noodles, it sounds like the float valve inside the water reservoir is stuck in the down position. Turn the water line ON/OFF valve to the humidifier OFF. Open the top of the reservoir and you will see the float valve. Gently, lift it up, to see if it will remain at the top of the water level, which left in the reservoir. It it doesn't, then the float needs to be replaced. In the mean time, leave the water line ON/OFF Valve OFF.

Hope this helps you troubleshoot and solve the problem. Please let me know. Thanks.

The automatic shutoff switch from the furnace to the humidifier has probably gone bad and will need to be replaced. However If the humidifier has a float valve in it like a toilet tank, it may be hung in the open position,which allows the water to continually run. Take the top of the humidifier and check the float valve's operation. It may simply need cleaning.

Well, let's see what service the unit has had in its 6 or 7 years of working--

When was the Humidifying pad last changed?
These usually have to be changed every year-- to get good performance from the humidifier...
So-- Have you looked inside the large door?-- what does the pad look like?

When the furnace is running, you should be able to open the humidifier door, and look in, (Air should be sucking INTO the door as you open it, if the unit is properly mounted in the return air duct work..) and if the humidistat is calling -- the motor should be turning the big wheel, and moisture is being added, as the wet surface is exposed to the air returning to the furnace. What do you see?

There is also a water sump, filled by a float valve-- is that valve admitting water into the sump?
Is the pad wicking up this water, and rotating into the air stream?

That pad is easily changed-- your hard ware store probably has replacement pads-- they can be sewn back on to the wheel, after removing the old one.

Let us know if we can help further-

Mack B

Searsparts.com

The furnace should be equipped with a #50 relay to turn the Humidifier on and off when only when the furnace blower is on. You should have a test mode on your humidistat. Do you have water coming up to the solenoid valve? Make sure that the saddle valve is turned on to supply the water to the humidifier. Is your humidistat set high enough to turn the humidifier on? Is it plugged in?
Good luch
HVAC Teacher

You need to change out the burner orifice, change the filter and make sure there is pkenty of oil. Bleed lines at brake like valve until there are no bubbles present.

Greetings!

We just got a new furnace with humidifier, so they took out our old Kenmore humidifier.

We now have 4 of these parts...........valve button for float #28110101.

Linda

Have you checked the position and function of the floats in the pan?