Question about Bemis 427 300 Humidifier

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Fan runs but no change in the humidity. I can run the fan at the highest setting and go a week or longer with out refilling the water jugs

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Re: Fan runs but no change in the humidity. I can run the...

I have same problem. Water does not come out of the bottles. One bottle empties first. the valve at bottom may be too tight. I loosened the left bottle cap and that released enough water to fill the tray and get to the wick element. I don't know why or how it knows one bottle is empty and changes over to the other, or how it only meters out enough water to fill the tray since there is no moving parts.

Posted on Jan 26, 2008

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Kenmore Humidifier 14114 - the fan suddenly stopped running. Changed fliter and water, unplugged the unit, changed dial to highest humidity level - the unit will not run.


Please turn off the power to the unit and unplug it. Now check the fuse inside the unit, make sure its fine and not burnt If fuse seems OK then inspect the connections to the fan and make sure the wires are not cut. Also, inspect the control for any burnt components, use a multimeter to confirm. Hope this helps... Please post back with complete model# if you need more information.


Jan 04, 2011 | Kenmore Humidifiers

1 Answer

Everything seems to be working - installed a new water panel today - but the humidity level remains at about 30%.

If it is very cold out or if the humidity was very low to start with then it will take quite a long time to get the humidity back up. Do you have your thermostat set to run the fan continuously? This will keep the air flowing over the panel and bring the humidity back sooner.If you allow it to just cycle with the heat it will take a very long time to catch up.
Turn the fan switch on your t-stat to "on" and then it will circulate air all the time and help you out faster.


Jan 11, 2010 | Aprilaire 550 Humidifier

1 Answer

Aprilaire 600 humidity level too low

The max the aprilaire can put out is 45% Rh. Your humidifier may wired up to run only when the heat is on. In some cases this is not enough time to maintain your humidity level your seeking. To correct this, the hum. has to hooked up the hot side of the water supply. And the humidifier has to be hooked up when the fan runs and leave the fan run constantly

Jan 12, 2009 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 600: water only runs in "Emergency" Heat mode

When your unit is on normal the outside unit works and the inside only the fan runs. your heat pump does not remove any humidity when it operates so the installation cotractor did not wire it to operate then. you can change the wiring on the humidifier to operate all the time by wiring it to the fan (g) terminal then it should work just turn it all the way to the lowest humidity when you are in cooling mode.

Jan 07, 2009 | Aprilaire 600 Humidifier

11 Answers

The humidifer on the Sunpentown SH-1500 heater

what country are you in... winter time is low humidity to begin with.


Jan 06, 2009 | Sunpentown 1500W Heater Fan Humidifier...

1 Answer

The power light on my Bemis 4D-7800 humidifier flashes.

On my water wheel several parameters must be met. 1. Power on, cord plugged in. 2. Water in tank, the float arm needs to move to indicate water present, the red light on the dash indicates no water. 3. Humidity controll set higher than the room atmosphere humidity, clockwise is higher on mine. 4. The fan speed selecter must be on either high or low, the fan won't run unless one position is selected. I hope this helps

Dec 30, 2008 | Bemis 4D7-800 Humidifier

1 Answer

Aprilaire 500 - Everything works, but humidity will not increase!

You should take out that aprilaire and throw it in the garbage or return it to who you got it from. Ask them why they didn't offer you the best humidifiers available. The only way to truly control humidity in your home without running your heat is a steam humidifier. Autoflo makes a good one also honeywell makes a new one. I have installed a honeywell tru steam in my own home and a few customers it hasn't lived up to its advertising. The auto flo has never given me any problems with customers.

Dec 18, 2008 | Aprilaire 600 Humidifier

1 Answer

Not operating-controller questions

are you having problems with your fan blade rotating in the wrong direction? Is yours pushing or pulling water through the water panel? I am very unhappy with my humidity levels in my house.

Nov 02, 2008 | Aprilaire 700 Humidifier

1 Answer

Fan is running but humidity is not changing

Q: My unit has been running for several hours. I hear the fan spinning, but I do not notice the water level in the tank decreasing.
First, check the filter to ensure it is wet. If the pad appears dry, remove it from the Base and gently rinse under cool water. Reposition wet filter in the Base. You may also want to note the current moisture level in your home. If the humidity level is over 60% the unit will not put out much moisture
as your air is already saturated.

UV bulb and filter are user replacement items

see manual from my other post
Owners manual LINK
Comment by Soulvisitor, posted on Jan 20, 2008 You should notice moisture on the widows in the room after unit has run for awile, this unit carries a 3 year warranty. More info coming...
Comment by Soulvisitor, posted on Jan 20, 2008 see this
4b54ac1.jpg Comment by Soulvisitor, posted on Jan 20, 2008 If water level in tank is dropping and fan runs then I'd say it is working.

Comment by Soulvisitor, posted on Jan 20, 2008 Q: I hear the fan turning, but I don’t see any mist. Is my humidifier operating properly?
Dry air is pulled through the system and a fan disperses invisible, moisture balanced air. There is no
“mist” emitted. When operating normally you will feel only cool air coming from the unit. Monitor the
water level in your Tank/ Base. If you notice a decrease in the Water Tank over 24 hours then the unit
is operating normally.

Dec 02, 2007 | Honeywell HCM-300T Humidifier

3 Answers

Humidity not going up

I have a similar problem with mine too. I am interested to see if anyone can diagnose this problem

Nov 30, 2007 | Honeywell HE360A1027 Whole House...

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