Question about Emerson HDC12 Humidifier

3 Answers

Left Tank won't empty

I just bought an Emerson HDC12 recently. I have made sure the unit is level front to back and left to right. I have filled both tanks with water and run it successfully until the F light lites up telling me to refill my humidifier. However the left tank stays full and never loses any water at all. I have switched the plungers between the tanks, I noticed the post for the left plunger is much lower so I stuck a spacer on the bottom of the plunger to offset the difference between the tanks, and lastly I am now trying the empty humidifier position. (Tying the float up stuck in the on position.) I won't know if this works until that right tank empties again. I can let water out of the left tank if I push up on the plunger so it is not geetting stuck in there by vacumn (I think). This unit is supposed to drain the right tank before the left but I thought they both were supposed to drain before the float fell enough to shut off the humidifier. Anybody have any ideas on what to try next? Thanks

Posted by Tom Chappell on

  • 2 more comments 
  • Tom Chappell Mar 12, 2007

    Sorry everyone this unit is a Moistair 14 gallon per day unit. The HDC12 is the model of filter it uses so someone messed up early on.
    Since no one at Emerson ever tried to help I ended up switching the right and left tanks around. The left I put on the right side and the right tank I put on the left side. If I move them around a little I can get them to actually work. This doesn't work when they are on the correct sides though. Also noted that even though the float is at the empty whole unit of water (End of season setting) the unti still shuts off when the tanks are empty but there is still water in the bottom so even that float doesn't work.
    I may just return this unit and tell them it is a piece of crud. For $149 you would at least think the humidifier would work as advertised. I shouldn't have to jury rig the thing to get it to work.

  • deano1575 Jan 26, 2008

    I have the exact same problem with the MoiostAir HD13050. And I have tried the same things that tomc1965 has done.

  • Anonymous Nov 11, 2008

    I just bought the same unit and I am having the same problem. My parents have had this unit for 2 years and have not had this problem. I am planning on retuning it .

  • Anonymous Jan 19, 2009

    Same problem, however my unit has worked fine for about five years, This problem has only recently surfaced. Very perplexing!!

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Anonymous

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Eureka! Solved my "left bottle not emptying" problem. The problem was not with the bottle but that the top of unit which houses the on/off switch was not seated properly. It takes only a very slight difference in water level for the float to activate the switch, therefore if the top is raised even 1/4" the unit will shut off before the water level is low enough to allow the left bottle to drain.

Posted on Jan 20, 2009

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I had the same problem from day 1 with my MoistAir HD14070.
I inserted a piece of 4' square ceramic tile under each front wheel. This raised the front slightly more (unit is setting on carpeted floor) and gave the unit a more firm base to sit on. Works like a charm now.
Hope this helps someone.

Posted on Jan 05, 2010

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Anonymous

I've had the same problem. My solution has been to remove the plunger on the left tank. (Kind of defeats the purpose of changing the tanks without spilling water all over the place.) I really like the humidifier and this problem is minor compared with other humidifiers I've had in the past.

Posted on Mar 19, 2008

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Wont run in unit lift out and lift level control works fine put it back in unit [ very tight fit] lift level control wont work
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I turn the humidifier on l or ll. The light is grean but it is not releasing steam or anything. I don't hear a noise and the water level stays the same.
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To solve this problem do the following. Mix a 50/50 solution of White Vinegar and Bottled Distilled Water (enough to fill the tank). Empty any water that is currently in the tank and fill it with the 50/50 solution. Allow at least one hour, before turning the unit ON. After turning it ON place you hand in front of the mist nozzle to see if any mist is being generated. If it's generating mist, allow it to run until the tank is 3/4's empty. Then turn the unit OFF, unplug it and empty the remaining solution. Refill with Bottled Distilled Water and run until the tank is empty.

If the unit did not produce mist after one hour of soaking, allow it to set over night and then follow the procedure above. Generally, an overnight soaking will do the trick. In the future, I recommend using Bottle Distilled Water rather than your tap water.

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

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I have lost my manual. readout on the digital display is CF. humidifier operates fine. what does the display CF [email protected]
It means Change Filter.

However, assuming that you have done that in the recent past, you probably want to know more. I'm not sure how this actually works (that is why it shows CF). I saw it for the first time after 2 or 3 years of using my humidifier. (And I had just changed the filter a week or so previously).

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No instruction manual
FILLING THE WATER TANKS
 1. Before filling the water tanks, push the POWER switch to the “OFF” position and
unplug unit. Refer to cleaning instructions.
2. Remove water tanks from base, turn each tank upside down and remove tank cap
by turning counterclockwise. Fill tank with clean cold tap water.
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3. Carefully pick up tank, since it will be heavy when full, and slippery if wet.
4. Place water tanks on base. Make sure tanks are properly placed, otherwise, the
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Looking for manual or else where to put filter
http://www.appliancefactoryparts.com/search/modelinfo.php?modelsID=109553 Go to this site for manual, can view or download for free

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Hope this helps!

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3. Always turn humidifier off when water runs* out. Unit will continue to operate when tank is empty.
*Humidifier will run up to 12 hrs on low; 6 hrs on high.

DO NOT LET WATER SIT IN TANK FOR LONG. THIS CAN ENCOURAGE BACTERIAL GROWTH.
Place unit on level surface away from direct sunlight.
DO NOT ADD MEDICATION OF ANY TYPE INTO THE NOZZLE, BASE, OR WATER TANK.
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Mild bleach and water solution for cleaning, never detergent.
Clean every 3rd day during use. Clean after long storage
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