Humidifier light goes on. Fan does not work after cleaning it.

There are two causes of your problems:
1. The fan needs you to manually turn it to start running.
Problem: The motor bearings both ends are dried out.
Solution:
1. Remove the motor/fan from the motor housing (there are two screws that hold the motor to the housing. The only way I know how to get to the screw is to bend one of the fan blade up and use a long screw driver to get to the screws.
2. Remove the two screws that hold the bearings to the motor.
3. Detach the bottom bearing (opposite of the fan end.) You might have to use a flat screw driver to pry the bearing off.
4. Use a Q-tip and soak it with motor oil or grease then lubri- cate the fan end shaft/bearing.
5. Use a Q-tip + alcohol to clean up the bottom bearing hole, then lubricate it with grease or motor oil.
6. Put the motor and bearings back together and make sure that the fan can turn freely now.
7. Install the motor/fan back into it housing.
The fan should turn on its own without you helping it.
If the fan won't turn, you have a bigger problem. See below.

2. The fan won't turn at all and is really tight even when you try to
turn it by hand.
Problem: The transformer coil(s) is/are burnt out. Chances are you let the fan run dry to a point that it squealed and started to smell like it was burning before it quit all together.
Solution 1:
1. Remove the filters and their housing on the bad fan side.
2. Duct tape a piece of plastic over the bad fan opening.
3. Run the humidifier with one fan. It works just as well.

Solution 2:
1. Buy a new humidifier.
2. Make sure you lubricate the bearings as soon as the motor begins to squeal.

Solution 3: You need knowledge of electricity
1. Take the motor/fan out from the housing.
2. Use a vote meter to check the resistance in both coil of the transformer; should read about 17 ohms. The coil(s) that has a high reading or if the meter shows 'OL' is bad. Remove the Yellow tape from the coil to see if you have a loose soldering joint between the coil wiring the electrical cord. If yes, solder the joint back together, check the resistance again to make sure you have about 17 ohms. If the answer is yes, put the yellow tape back on the coil and use electrical tape to secure the tape. Hopefully, the fan should work now. Good luck!

Here is a solution I wrote up for another Humidifier with a fan problem:

Have you considered checking to see if the fan motor mightjust need cleaning and lubricating?
Most small fans and heaters, have small fan motors, in which thebearings have dried out over the years. If you have made anelectrical check on the motor leads-- and you have electric going into thewindings, likely the motor feels warm? (If not-- possibly a bad splicewhere the supply wire attaches to the tiny armature wires?-- check , and checkcontinuity)

If you want to tear into the fan motor, and clean up and lubricate thebearings-- here are some tips:

First you need to get inside the heater of the fan housing-- by removing theprotective covers.
Note the screws, s, locations, and how the protective coverswill go back on when you are ready to reassembly-- Mark where the screw holesare that line up with the matching other parts.

Then remove the motor from it's bracket (Possibly have to remove the fanfirst?)
You will have to remove the fan, to lubricate both front and realbearings.
Next you will need to remove the 4 long screws that hold the motorframe together-- Be sure to mark the original alignment, so you can reassemblycorrectly.

Now, with the fan removed, gently separate the Front and rearhalf's of the motor. Usually the windings will stay with the portion ofthe motor where the wires are still attached. Either way, you are goingto have to get the bearings to slide off both Shafts of the armature-- withoutbreaking the delicate winding wires-- the wires are hair thin on small motors!

Now clean up the caked on residue on the shaft where the bearings ride,with rubbing alcohol. Clean up the internals of the bearings as best youcan- making sure the pores of the oil-lite bearings are not plugged withsolids. Now begin the gentle process of getting the bearing wicking tosoak up new oil. When you are sure the reservoirs are wellsaturated, then generously lubricate the shafts, and slip them thru thebearings again-- retracing all your steps above, The motor shaft shouldturn freely now. You can test the motor without the fan on-- to besure you have the motor itself reassembled properly.

Double check all the splices, switches, and any high temperature limit switchesfor continuity-- and trace the wiring all the way back out thru the powersupply cord.

What did you find, and what do you need to do next?

I hope this helped-- Let me know If I can help further--

Mack B

Do the motors feel warm-- maybe even HOT?-- Like they have electric current, but the bearings might be seizing up?
You mentioned one stopped spinning awhile ago--- and the other one was OK-

It sounds like the bearings are dry and worn on the fans-- (How old is the humidifier?)

The bearings CAN be cleaned up and lubricated, if you are into tearing a motor apart, and servicing the bearings-- Are you ready for that? You will have to remove the motors from their mounting, remove the fans, split the end bells, and clean and lubricate the bearings deep inside.

Let us know how much further you want to go-

Mack B

Before replacing the motor. You can try to put turbine oil down the motor shaft,just a little at a time. Work on spinning the blade at times.It does not always work but it is worth a try. You can get the turbine oil at most appliance parts stores.

Returned it for a replacement the motor was broken

Turn the unit off, lift the fan assembly off the base, and push the connector together that goes to the float switch on the bottom of the fan motor. If you hold the switch in with your finger (careful not to get into the fan blades) and turn the unit on, the F indication should go away. F (as in Fill), apparently, means the base has no water. The plastic tube that sticks up out of the base floats on the water and pushes the switch. Put it back together, it should work!

Make shure that the the filter in the bottom of the valve is clean. Turn water off use a 1/2 & 7/16 wrench to take apart the bottom connection on valve use a small screwdriver and push the small screen out and clean then put it back together.Use the same wrenches and take apart the top of valve clean inside valve and clean small orfice in plastic water line put back together. Make shure 24volts is gettin to valve you should her a click when furnace is running or fan. It may take a couple times to clean. Hope this helps

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

Robert

the best way to clean the fan blades is to take like a paint brush or some type of brush and clean it that way. there isn't a way to take that apart. if you try to it can be difficult to put back together. if you have any other questions please let me know

A noisy humidifier may be the result of an unlubricated fan motor or a drive mechanism clogged by debris. Periodically clean the water reservoir, fan, and nozzle to ensure that they are clean and working properly. To keep your humidifier working smoothly and efficiently, lubricate the fan motor bearings with SAE #20 oil. Be sure to consult your owner?s manual for proper care and maintenance procedures. If it seems loose, vibrating parts are causing the noise: 1) Disconnect the power. 2) Remove the cover and look for any vibrating parts. Tighten screws, if necessary. 3) Wiggle the fan to see if it is loose on its shaft. If it is, tighten the mounting fasteners. Lubricate the motor's bearings if suggested in your owner's manual. 4) If it still makes noise, call an appliance repairperson or take the unit into an appliance repair shop.